This Protection Profile Module (PP-Module) describes
security requirements for a 802.11 Wireless Intrusion Detection System (WIDS) defined to be an
IEEE 802.11 network intrusion detection product located at the edge of a private network that
can collect, inspect, and analyze real-time network traffic and alert the administrator of
policy violations. This PP-Module is intended to provide a minimal baseline set of
requirements that are targeted at mitigating well defined and described threats.
This PP-Module contains optional requirements for a Wireless Intrusion
Protection System (WIPS), a security product that in addition to the 802.11 WIDS capability,
provides network security administrators with the additional ability to react in real-time to
potentially malicious wireless (IEEE 802.11) network traffic.
collaborative Protection Profile for Network Devices (NDcPP), Version 2.2e
A TOE that conforms to a PP-Configuration containing this PP-Module must be a 'Distributed TOE' as defined in the NDcPP.
The expectation for this PP-Module is that a WIDS must include distributed sensor nodes to ensure that the full physical range of a wireless network
to ensure that user interactions with the network cannot evade detection.
A part or parts of the TOE that have to be relied upon for enforcing a
closely related subset of the rules from the TSP.
The security policy enforced by an SF.
1.2 Terms
The following sections list Common Criteria and technology terms used in this document.
1.2.1 Common Criteria Terms
Assurance
Grounds for confidence that a TOE meets the SFRs [CC].
Base Protection Profile (Base-PP)
Protection Profile used as a basis to build a PP-Configuration.
Collaborative Protection Profile (cPP)
A Protection Profile developed by
international technical communities and approved by multiple schemes.
Common Criteria (CC)
Common Criteria for Information Technology Security Evaluation (International Standard ISO/IEC 15408).
Common Criteria Testing Laboratory
Within the context of the Common Criteria Evaluation and Validation Scheme (CCEVS), an IT security evaluation facility
accredited by the National Voluntary Laboratory Accreditation Program (NVLAP) and approved by the NIAP Validation Body to conduct Common Criteria-based evaluations.
Common Evaluation Methodology (CEM)
Common Evaluation Methodology for Information Technology Security Evaluation.
Distributed TOE
A TOE composed of multiple components operating as a logical whole.
Functional Package (FP)
A document that collects SFRs for a particular protocol, technology,
or functionality.
Operational Environment (OE)
Hardware and software that are outside the TOE boundary that support the TOE functionality and security policy.
Protection Profile (PP)
An implementation-independent set of security requirements for a category of products.
A comprehensive set of security requirements for a product type that consists of at least one Base-PP and at least one PP-Module.
Protection Profile Module (PP-Module)
An implementation-independent statement of security needs for a TOE type complementary to one or more Base-PPs.
Security Assurance Requirement (SAR)
A requirement to assure the security of the TOE.
Security Function (SF)
A part or parts of the TOE that have to be relied upon for enforcing a
closely related subset of the rules from the TSP.
Security Function Policy (SFP)
The security policy enforced by an SF.
Security Functional Requirement (SFR)
A requirement for security enforcement by the TOE.
Security Target (ST)
A set of implementation-dependent security requirements for a specific product.
Target of Evaluation (TOE)
The product under evaluation.
TOE Security Functionality (TSF)
The security functionality of the product under evaluation.
TOE Summary Specification (TSS)
A description of how a TOE satisfies the SFRs in an ST.
1.2.2 Technical Terms
Access Point (AP)
A device that provides the network interface that enables
802.11 wireless client hosts to access a wired network.
End User Device (EUD)
An 802.11 enabled device that has the ability to
process, transmit, and/or store information.
Service Set Identifier (SSID)
The primary name associated with an 802.11
wireless local area network (WLAN).
Wireless Intrusion Detection System (WIDS)
A security product that
provides network security administrators with the ability to monitor, collect, and log
real-time to potentially malicious wireless (IEEE 802.11) network traffic.
Wireless Intrusion Prevention System (WIPS)
A security product that
provides network security administrators with the ability to monitor, collect, log, and
react in real-time to potentially malicious wireless (IEEE 802.11) network traffic.
Wireless Local Area Network (WLAN)
An 802.11 wireless computer network that
links two or more devices using wireless communication to form a local area network (LAN)
within a limited area such as a home, school, computer laboratory, campus, office building
etc.
1.3 Compliant Targets of Evaluation
1.3.1 TOE Boundary
This PP-Module specifically addresses
WIDS/WIPS. A conformant WIDS is a product that can monitor, collect, inspect, and analyze
real-time network traffic and alert the administrator of policy violations. WIPS
functionality is not required to conform to this PP-Module, and it is optional for the TOE
to have the additional ability to react in real-time to potentially malicious wireless (IEEE
802.11) network traffic.
A WIDS/WIPSTOE consists of multiple sensors that
passively scan the RF environment on the WLAN radio frequency spectrum and a centralized
mechanism such as a Server or Controller that processes the data collected by the sensors.
Conformant TOEs must use a secure communication path(s) between WIDS/WIPS components.
A WIDS/WIPS can be Integrated (be part of the WLAN infrastructure) or
Standalone (independent from WLAN) architecture depending on vendor implementation. The two
different architectures are illustrated in Figure 1 below. The TOE
boundary is indicated by the yellow box.
A WIDS/WIPS is expected to inspect layers 1 and 2 network traffic, per the
OSI network model, and monitor wireless frames in the RF spectrum utilized by IEEE 802.11 a,
b, g, n, and ac. Monitoring and inspection of other technologies (e.g., cellular) and
protocols are optional.
Conformant TOEs will detect potentially malicious
network traffic using various approaches. Broadly speaking, the traffic analysis could be
based on identification of 'known' threats, or 'unknown' threats. Identification of 'known'
threats may be performed through pattern matching, (e.g. by matching strings of characters
within a frame with known patterns, or by matching traffic patterns common with
reconnaissance or denial of service (DoS) attacks). Identification of 'unknown' threats may
be performed through use of various forms of anomaly detection whereby the WIDS/WIPS is
provided with (or learns/creates) a definition of expected/typical traffic patterns, such
that it’s able to detect and react to anomalous (unexpected/atypical) traffic patterns.
A WIDS consists of sensors (preferably dedicated) and a central controller working together to provide 24/7 monitoring, primarily to the
802.11 Wireless Local Area Network (WLAN) spectrum and protocol, to detect, identify, and geolocate WLAN devices within a controlled space.
The WIDS may be capable of detecting or monitoring traffic other than 802.11 WLAN, such as
802.15.4 based protocols, which enhances the security of the controlled space. However, a WIDS is not required to monitor additional protocols outside of 802.11.
A WIDS monitors all 802.11 WLAN traffic emanating from and traversing the controlled space, thus inadvertent collection of any 802.11
signals is possible when operating a WIDS.
2 Conformance Claims
Conformance Statement
This PP-Module inherits exact conformance as required from the specified
Base-PP and as defined in the CC and CEM addenda for Exact Conformance, Selection-based
SFRs, and Optional SFRs (dated May 2017).
This PP-Module is conformant to Parts 2 (extended) and 3 (conformant) of Common Criteria Version 3.1, Revision 5.
PP Claim
This PP-Module does not claim conformance to any Protection Profile.
Package Claim
This PP-Module does not claim conformance to any packages.
3 Security Problem Description
WIDS address a range of security threats
related to detection of and reaction to potentially malicious WLAN traffic. The malicious
traffic may pose a threat to one or more endpoints on the monitored networks, to the network
infrastructure, or to the TOE itself. Attacks against a WLAN could compromise the
confidentiality and integrity of WLAN users and system data as well as the availability of the
WLAN to legitimate users.
The term “monitored network” is used here to represent
any WLAN and/or wired network that the TOE is configured to monitor and detect intrusions on.
This extends to the wired networks as intrusions on the wireless network can also be damaging to
the wired infrastructure. The WIDS/WIPS also protect the wired infrastructure by detecting rogue
devices that are directly connected to the wired infrastructure, which may expose the wired
network, or unauthorized WLAN devices deployed in a no-wireless zone.
The proper installation, configuration, and administration of the WIDS is critical to
its correct operation. A site is responsible for developing its security policy and configuring
a rule set that the WIDS will enforce and provide an appropriate response to meet their needs,
relative to their own risk analysis and their perceived threats.
Note that this
PP-Module does not repeat the threats identified in the NDcPP, though they all apply given the
conformance and hence dependence of this PP-Module on the NDcPP. Note also that while the NDcPP
contains only threats to the ability of the TOE to provide its security functions, this
PP-Module addresses only threats to resources in the operational environment. Together the
threats of the NDcPP and those defined in this PP-Module define the comprehensive set of
security threats addressed by a WIDSTOE.
3.1 Threats
T.UNAUTHORIZED_DISCLOSURE_OF_INFORMATION
A malicious actor may take advantage of unintended/unauthorized disclosure of
sensitive information on a protected WLAN, such as sending unencrypted sensitive data, without detection.
A malicious actor may also force the modification or disclosure of data in transit between
distributed components of a WIDS to impede or gain visibility into its data collection capabilities.
T.UNAUTHORIZED_ACCESS
An attacker may attempt to gain unauthorized access to a network, endpoints,
or services, by methods such as impersonation of an authorized AP to get an EUD to
connect to the unauthorized AP If malicious external APs or EUDs are able to communicate
with APs or EUDs on the protected WLAN, then those devices may be susceptible to the
unauthorized disclosure of information.
T.DISRUPTION
Attacks against the WLAN infrastructure might lead to denial of service
(DoS) attacks within a protected WLAN. A wireless DoS may occur in two ways: at the
physical layer through RF Jamming, or at the data link layer through packet injection.
3.2 Assumptions
These assumptions are made on the Operational Environment (OE) in order to be able to ensure that the
security functionality specified in the PP-Module can be provided by the TOE.
If the TOE is placed in an OE that does not meet these assumptions, the TOE may no longer be able to
provide all of its security functionality.
A.CONNECTIONS
It is assumed that the TOE is connected to distinct networks in a manner
that ensures that the TOE's security policies will be enforced on all applicable network
traffic flowing among the attached networks.
A.PROPER_ADMIN
The administrator of the WIDS is not careless, willfully negligent or
hostile, and administers the WIDS within compliance of the applied enterprise security
policy.
3.3 Organizational Security Policies
An organization deploying the TOE is
expected to satisfy the organizational security policy listed below in addition to all
organizational security policies defined by the claimed Base-PP.
P.ANALYZE
Analytical processes and information to derive conclusions about potential
intrusions must be applied to WIDS data and appropriate response actions
taken.
4 Security Objectives
4.1 Security Objectives for the TOE
O.SYSTEM_MONITORING
To be able to analyze and react to potential network policy violations,
the WIDS must be able to collect and store essential data elements of network traffic on monitored networks.
A conformant TOE may also implement a self-protection mechanism to ensure that undetected
network policy violations cannot occur when a sensor is unavailable.
O.WIDS_ANALYZE
The WIDS must be able to analyze collected or observed WLAN activity on
monitored network to identify potential violations of approved WLAN policies,
unauthorized connections involving internal WLAN devices, and non-secure communications.
O.WIDS_REACT
The TOE must be able to react, as configured by the administrators, to
configured policy violations or other potential malicious activity.
O.TOE_ADMINISTRATION
To address the threat of unauthorized administrator access that is defined in the Base-PP,
conformant TOEs will provide the functions necessary for an administrator to configure the
WIDS capabilities of the TOE. A conformant TOE may also implement a self-protection mechanism to
ensure that a TSF failure cannot be used as a way to modify the TOE's configuration without authorization.
O.TRUSTED_COMMUNICATIONS
To further address the threat of untrusted communications channels that is
defined in the Base-PP, conformant TOEs will provide trusted communications between
distributed components if any exist.
4.2 Security Objectives for the Operational Environment
The OE of the TOE implements technical and procedural measures to assist the TOE in correctly providing its security functionality (which is defined by the security objectives for the TOE).
The security objectives for the OE consist of a set of statements describing the goals that the OE should achieve.
This section defines the security objectives that are to be addressed by the IT domain or by non-technical or procedural means.
The assumptions identified in Section 3 are incorporated as security objectives for the environment.
The following security objectives for the operational
environment assist the TOE in correctly providing its security functionality. These track the
assumptions about the environment.
OE.CONNECTIONS
TOE administrators will ensure that the TOE is installed in a manner that
will allow the TOE to effectively enforce its policies on the network traffic of
monitored networks.
OE.PROPER_ADMIN
The administrator of the WIDS is not careless, willfully negligent or
hostile, and administers the WIDS within compliance of the applied enterprise security
policy.
4.3 Security Objectives Rationale
This section describes how the assumptions, threats, and organizational
security policies map to the security objectives.
This chapter describes the security requirements which have to be fulfilled by the product under evaluation.
Those requirements comprise functional components from Part 2 and assurance components from Part 3 of
[CC].
The following conventions are used for the completion of operations:
Refinement operation (denoted by bold text or strikethrough
text): Is used to add details to a requirement (including replacing an assignment
with a more restrictive selection) or to remove part of the requirement that is made irrelevant
through the completion of another operation, and thus further restricts a requirement.
Selection (denoted by italicized text): Is used to select one or more options
provided by the [CC] in stating a requirement.
Assignment operation (denoted by italicized text): Is used to assign a
specific value to an unspecified parameter, such as the length of a password. Showing the
value in square brackets indicates assignment.
Iteration operation: Is indicated by appending the SFR name with a slash and unique identifier
suggesting the purpose of the operation, e.g. "/EXAMPLE1."
5.1 NDcPP
Security Functional Requirements Direction
In a PP-Configuration that includes the NDcPP,
the TOE is expected to rely on some of the security functions implemented by the
Wireless Intrusion Detection/Prevention System
as a whole and evaluated against the NDcPP.
The following sections describe any modifications that the ST author must make to the SFRs
defined in the NDcPP in addition to what is mandated by Section 5.2 TOE Security Functional Requirements.
5.1.1 Modified SFRs
The SFRs listed in this section are defined in the NDcPP and relevant to the secure operation of the TOE.
5.1.1.1 Security Audit (FAU)
FAU_GEN_EXT.1 Security Audit Data Generation for Distributed TOE Components
The TSF shall be able to generate audit records for each TOE
component. The audit records generated by the TSF of each TOE component shall include the
subset of security relevant audit events which can occur on the TOE component.
Application
Note:
This SFR is selection-based in the Base-PP but is mandated by this PP-Module because the ST author must claim a distributed TOE selection in FAU_STG_EXT.1.2.
There is no change to the EAs specified for this SFR in the NDcPP SD.
The PP-Module modifies this SFR to make its inclusion mandatory rather than selection-based, but there is no change to how the SFR must be implemented.
The TSF shall be able to store generated audit data on the TOE itself. In addition [selection:
The TOE shall be a distributed TOE that stores audit data on the following TOE components: [assignment:
identification of TOE components]
The TOE shall be a distributed TOE with storage of audit data provided externally for the following TOE components:
[assignment:
list of TOE components that do not store audit data locally and the other TOE components to which they transmit their generated audit data]
].
Application
Note:
This SFR is modified from its definition in the Base-PP by removing the selection option for the TOE to be standalone. A TOE that conforms to this PP-Module is expected to be distributed.
There is no change to the EAs specified for this SFR in the NDcPP SD.
The PP-Module modifies this SFR to remove one of the possible selection items, but there is no change to how the SFR is to be implemented.
There is no change to the EAs specified for this SFR in the NDcPP SD.
The PP-Module modifies this SFR to make its inclusion mandatory rather than optional, but there is no change to how the SFR is to be implemented.
5.1.1.3 Protection of the TSF (FPT)
FPT_ITT.1 Basic Internal TSF Data Transfer Protection
The TSF shall protect TSF data from disclosure and detect its
modification when it is transmitted between separate parts of the TOE
through the use of [selection: IPsec, SSH [v2], TLS [1.2 or 1.3], DTLS, HTTPS ].
Application
Note:
FPT_ITT.1 is optional in NDcPP, however, since a WIDS/WIPSTOE is distributed, FPT_ITT.1 shall be included in the ST and is applicable to the data transmitted between the sensors and
controller.
This requirement ensures all communications between
components of a distributed TOE is protected through the use of an encrypted
communications channel. The data passed in this trusted communication channel are
encrypted as defined in the protocol chosen in the selection. The ST author chooses
the mechanisms supported by the TOE, and then ensures that the detailed protocol
requirements in Appendix B of NDcPP corresponding to their selection are included in
the ST, if not already present.
There is no change to the EAs specified for this SFR in the NDcPP SD.
The PP-Module modifies this SFR to make its inclusion mandatory rather than optional, but there is no change to how the SFR is to be implemented.
The TSF shall be capable of using [selection: IPsec, SSH [v2], TLS [1.2 or 1.3], DTLS, HTTPS ] to provide a trusted communication channel between itself and
authorized IT entities supporting the following capabilities: audit server, [selection: authentication server, database server, [assignment:
other capabilities], no other capabilities ] that is logically distinct from other communication channels
and provides assured identification of its end points and protection of the channel
data from disclosure and detection of modification of the channel data.
Application
Note:
This SFR is modified from its definition in the Base-PP by
adding a selection for a database server capability.
If the TSF uses a separate database server to support its security-relevant functionality,
this selection must be included in the ST.
The intent of the database server is to store WIDS/WIPS data that must
be queryable, such as events/alarms, triangulation calculations, wireless spectrum analysis (including RF jammer/Denial of Service (DoS)),
and packet capture analysis. Authorized Administrators must be permitted to view alarms, raw event data, and any other data stored in the database.
The Administrator must access the database through a trusted channel if done so remotely.
The intent of this requirement is to provide a means by
which a cryptographic protocol may be used to protect external communications with
authorized IT entities that the TOE interacts with to perform its functions. The TOE
uses at least one of the listed protocols for communications with the server that
collects the audit information.
If
other authorized IT entities are protected, the ST author makes the appropriate
assignments (for those entities) and selections (for the protocols that are used to
protect those connections). The ST author selects the mechanism or mechanisms
supported by the TOE, and then ensures that the detailed protocol requirements in
Appendix B of NDcPP corresponding to their selection are included in the ST.
There is no change to the EAs specified for this SFR in the NDcPP SD.
If ‘database server’ is selected in FTP_ITC.1.1, the evaluator shall ensure that the required tests are performed on that external interface in addition to the other claimed interfaces.
The evaluator shall also perform test 4 for this SFR in the NDcPP SD, which is objective in NDcPP.
5.2 TOE Security Functional Requirements
The following section describes the SFRs that must be satisfied by any TOE that claims conformance to this PP-Module.
These SFRs must be claimed regardless of which PP-Configuration is used to define the TOE.
The TSF shall display an alert to Authorized Administrator in sufficient
detail to include identity of APs and EUDs involved, signal strength, accurate event timestamp, description of alert and severity level and
[selection: capture raw frame traffic that triggered the violation, no other actions ] upon detection of a potential security violation.
Application
Note:
If "capture raw frame traffic that triggers the violation" is
selected then FAU_STG_EXT.1/PCAP must be included in the ST.
FAU_SAA.1 defines the rules for monitoring the wireless traffic to detect for potential security violations.
FAU_INV_EXT.2 defines the information the TOE needs to collect for all APs and EUDs within range of the the TOE's sensors. Device attributes can then be individually filtered
and/or selected in order to be displayed as part of the alert.
The evaluator shall verify that the TSS describes where to find the WIDS alerts
on the Administrator console/interface.
Guidance
The evaluator shall use the operational guidance for instructions on where
the alerts generated are displayed within the WIDS interface. If "capture raw frame traffic that triggers the violation is selected", the
evaluator shall use the operational guidance to configure the traffic capture
capabilities.
Tests
Test FAU_ARP.1:1:
The evaluator shall perform a series of events or generate traffic that
would successfully trigger an alert for each of the rules defined in FAU_SAA.1. The evaluator should verify and record
whether the TOE generated the alert for each rule, and provided sufficient details. The evaluator should also record the events
or traffic that was generated as each alert was attempted to be triggered and
record the details provided by the TOE in the alert.
Test FAU_ARP.1:2:
[conditional] If capturing of raw frames was selected, verify
that the packet capture was triggered and stored as appropriate.
Step 1: The evaluator shall use the operational guidance to enable/disable
detection of available detection capabilities through the WIDS administrator
interface. The evaluator shall then generate traffic that would successfully
trigger the alert. The evaluator should verify that the TOE generated the
alert.
Step 2: The evaluator shall disable the alert. The evaluator shall then generate
events as in previous test that should successfully trigger the alert. The
evaluator shall verify that the TOE did not generate an alert.
Failed login attempts,
successful login attempts, administrator logins, changes to the WIDS native authentication
system (creation of an account, deletion of an account, modification of user accounts,
changes to groups or group membership, attempts for privilege escalation)
MAC Address,
device type, classification of device, sensor(s) that detected device, signal
strength as received by detecting sensor(s), proximity to detecting
sensor(s)
Detection of network devices
operating in selected RF bands
Frequency band, channel used within
frequency band, identification information (MAC address if applicable or other
similar unique ID), device technology (i.e., cellular), sensor(s) that detected
devices
Description of violation, type of containment used, was
containment triggered manually or automatically, sensor performing the
containment (if wireless), details about the device (s) being contained
(classification, device type, MAC address)
Indication that there was a failure, type of failure,
device that failed, sensor connectivity and operating status, and time of failure
Table 2: Auditable Events
Application
Note:
The auditable events defined in Table 2
are for the SFRs that are explicitly defined in this PP-Module and are intended to
extend FAU_GEN.1 in the Base-PP. The events in the Auditable Events table should
be combined with those of the NDcPP in the context of a conforming Security
Target.
The Auditable Events (Table 2) includes
optional and objective SFRs. The auditing of optional and objective SFRs is only
required if that SFR is included in the ST.
Per FAU_STG_EXT.1 in the
Base-PP, the TOE must support transfer of the audit data to an external IT entity
using a trusted channel.
The TSF shall record within each audit record at least the following
information:
Date and time of the event, type of event, and subject identity (if
applicable);
For each audit event type, based on the auditable event definitions of the
functional components included in the PP/ST, [auditable events listed in
Auditable Events table (Table 2)].
Application
Note:
The subject identity in this case is the allowlisted inventory
item.
There are no TSS evaluation activities for this SFR.
Guidance
There are no operational guidance activities for this SFR.
Tests
The evaluator shall test the TOE’s ability to correctly generate audit records
by having the TOE generate audit records in accordance with the evaluation activities
associated with the functional requirements in this PP-Module. When verifying the
test results, the evaluator shall ensure the audit records generated during testing
match the format specified in the administrative guide, and that the fields in each
audit record have the proper entries.
Note that the testing here can
be accomplished in conjunction with the testing of the security mechanisms directly.
FAU_IDS_EXT.1 Intrusion Detection System - Intrusion Detection Methods
The TSF shall detect intrusions using[selection: anomaly-based, signature-based, [assignment:
other detection method] ] methods.
Application
Note:
At least one detection method must be selected. If multiple
detection methods are supported, each supported method must be selected.
If anomaly-based detection is selected, then FAU_ANO_EXT.1 shall be
included in the ST. If signature-based detection is selected, then FAU_SIG_EXT.1 shall
be included in the ST.
The evaluator shall verify that the TSS includes which intrusion detection
method(s) the TOE utilizes. If multiple methods are selected, the evaluator shall
confirm that the TSS describes how the different methods are
incorporated.
Guidance
The evaluator shall verify that the operational guidance provides
instructions on how to configure the TOE in order for it to detect such
intrusions.
Tests
Depending on the detection technique used by the TOE, the evaluator shall
confirm and note the existence of the capability and test for the appropriate
selection-based requirements.
The TSF shall detect the presence of non-allowlisted EUDs and APs in the Operational Environment.
Application
Note:
This inventory is used as an allowlist to indicate to the WIDS which APs and EUDs are authorized members of the wireless network. The inventory of authorized APs and EUDs is configured by FMT_SMF.1/WIDS.
The terminology used to describe an inventoried or allowlisted device may vary by vendor
product. This PP-Module utilizes allowlisted to describe APs and EUDs that are part of
the inventory and non-allowlisted to describe APs and EUDs that are not part of the
inventory.
The evaluator shall verify that the TSS describes how the presence of authorized
EUDs and APs is presented by the TOE. The evaluator shall verify that the TSS
includes where in the WIDS interface the list of detected APs and EUDs is
displayed.
Guidance
The evaluator shall verify that the operational guidance provides
instructions on how to view authorized and unauthorized APs and EUDs that are within
range of the TOE sensors.
Application
Note:
For detection of encryption type, the TSF should be able to
differentiate between the different WLAN encryption methods and when no encryption is
in use.
The evaluator shall verify that the TSS explains the capability of detecting the information specified in the requirements for all APs and EUDs within the TOE's wireless range.
Guidance
The evaluator shall review the operational guidance in order to verify that
there are instructions that show how to locate the device inventory mentioned
above.
Step 1: Deploy an allowlisted AP, non-allowlisted AP and two allowlisted
EUDs.
Step 2: Connect one allowlisted EUD to the allowlisted AP and one to the
non-allowlisted AP.
Step 3: Check the WIDS user interface for a list of detected APs and
EUDs.
Step 4: Verify that current RF band, current channel, MAC Address, received signal strength, device detection timestamps, classification of device, are part of the information presented on the WIDS user interface for all the APs and EUDs detected.
For APs verify that encryption, number of connected EUDs, SSID (if not hidden), received frames/packets and beacon rate are presented.
For EUDs verify that the SSID and BSSID of AP it is connected and DHCP configuration is presented.
The TSF shall detect the physical location of rogue APs and EUDs, and [selection: allow-listed APs, allow-listed EUDs, neighboring APs and EUDs, no other devices ] to within [assignment:
value equal or less than 25] feet of their actual location.
The TSF shall detect received signal strength and [selection: RF power levels above a predetermined threshold, no other characteristics ] of hardware operating within range of the TOE’s wireless sensors.
The evaluator shall verify that the TSS includes information on location
tracking, optimal number of sensors and sensor placement to meet the required level
of accuracy.
The evaluator shall verify that the TSS contains
information regarding the TSF’s ability to record signal strength of hardware
operating within range of its sensors.
Guidance
The evaluator shall review the operational guidance for instructions on how
to configure location tracking, how to load a location map (if applicable), and
where in the TSF administrator interface the location of APs and EUDs can be
viewed.
If the option for detection of RF power levels above a
predetermined threshold is selected, the evaluator shall use the operational
guidance to set or check what the threshold is in a given test. The evaluator should
also verify that the operational guidance provides instruction on how to configure
the TOE to generate an alert when the threshold is exceeded.
The TSF shall provide the ability to import data, such as an allowlist of APs and EUDs, and WIDS/WIPS configuration files from the system using [selection: custom API, Syslog, common log format, comma separated values (CSV), [assignment:
vendor detection method] ].
Application
Note:
The system must provide the ability to interact with an
extensible interface to a third party wireless monitoring system for the purposes of
importing data from the wireless system.
The TSF shall enforce the following rules for monitoring wireless traffic:
Accumulation or combination of [selection: [assignment:
subset of defined auditable events], no defined auditable events ]known to indicate a potential security violation,
These rules are used to detect a potential security violation. Maintenance of the rules by adding, modifying or deletion of rules from the set of rules is handled by FMT_SMF.1/WIDS.
If a potential security violation is detected the alert generated for the Administrator is handled by FAU_ARP.1.
The evaluator shall verify that the TSS describes the ability of the TOE to detect the network behavior described by the SFR. The evaluator shall verify that the TSS describes the methods that the TOE uses to detect the presence of unauthorized connections and unauthorized network traffic. The evaluator shall examine the TSS to verify that it describes the denial of service attacks that can be detected by the TOE. The evaluator shall verify that the TSS describes the ability of the TOE to detect when unauthorized WLAN authentication schemes and encryption schemes are used. The evaluator shall verify that the TSS describes the ability of the TOE to detect when unauthorized APs and EUDs send or receive unencrypted data.
Guidance
If the ability of the TSF to detect the different potential security violations is configurable, the evaluator shall verify that the operational guidance provides instructions on how to configure the TOE.
Test FAU_SAA.1:3.2:
Create the following connections between one allowlisted EUD and a
non-allowlisted EUD
Windows ad hoc
Mac OS ad hoc
Linux ad hoc
Wi-Fi Direct
Verify that alerts were generated by each of the connections in each test.
Test FAU_SAA.1:4:
Detection of EUD bridging two network interfaces:
Bridge two network interfaces on an allowlisted EUD (one must be the wireless card listed as allowlisted).
Step 1: Create a Windows Hosted Network with an allowlisted EUD.
Step 2: Connect a different allowlisted EUD to the network.
Verify that alerts were generated by each of the connections in each test.
Test FAU_SAA.1:5:
Detection of unauthorized point to point wireless bridges by allowlisted APs:
Step 1: Setup a point-to-point wireless bridge using allowlisted APs in the
range of the wireless sensors.
Step 3: Send an flood of CTS frames to reserve RF medium.
Step 4: Verify that the TSF detects the CTS abuse.
Test FAU_SAA.1:19:
Detection of unauthorized authentication scheme use:
The evaluator shall configure the TOE, per FMT_SMF.1/WIDS, with 802.1x authentication as the only mode of authorized WLAN authentication scheme.
The TSF shall distinguish between benign and malicious APs and EUDs based on if the APs and EUDs are authorized and [selection: automatic detection metrics, no other method ].
Application
Note:
FAU_INV_EXT.1 defines that an AP or EUD is authorized based on if the AP/EUD is allowlisted as configured in FMT_SMF.1.
A non-allowlisted device does not always have to be conducting malicious activity.
However, it is acceptable to equate an allowlisted AP/EUD as both authorized/benign and a non-allowlisted AP/EUD as both not authorized and thus malicious.
If the TOE supports automatic malicious device detection, based on in-depth network traffic analysis, "automatic detection metrics" must be selected.
This can be used to further distinguish if the AP/EUD is benign or malicious. If the TOE does not support automatic detection metrics, "no other method" must be selected.
The evaluator shall verify that the TSS describes how the TOE detects malicious
APs/EUDs and whether the TOE supports automatic detection. The evaluator shall
verify that the TSS includes how the TOE determines if a given SSID is authorized.
Guidance
If TOE supports automatic detection, the evaluator shall
verify that the operational guidance contains instructions for configuring the
automatic detection metrics. The evaluator shall verify that the operational guidance
provides instructions on how to configure SSIDs as authorized.
Tests
For test 1 and 2 below the evaluator shall verify that the TOE detects and appropriately classifies the APs and EUDs. It is acceptable if the TOE uses different but equivalent descriptors for the classification. If the TOE does not support automatic detection metrics and equates a non-allowlisted AP/EUD as malicious, than it is sufficient that the the classification given to the AP/EUD in step 1 is the same as in step 2. If the TOE supports automatic detection metrics and distinguishes between a non-allowlisted AP/EUD and a malicious AP/EUD, then the classification for the AP/EUD should differ between step 1 and step 2.
Step 1: Deploy a non-allowlisted AP in the area of the WIDS sensor, but take no action against the network. Verify that the AP is classified as non-authorized.
Step 2: Deploy a non-allowlisted AP in the area of the WIDS sensor and launch an attack against the network. This can be any variation of Fake AP, Spoof AP, Flood or DoS attack.
Step 3: Verify that the AP is classified as malicious.
Step 1: Deploy a non-allowlisted EUD in the area of the WIDS sensor, but take no action against the network. Verify that the EUD is classified as non-authorized.
Step 2: Launch an RF Flooding, DoS/DDoS, masqueraded or spoofing attack against authorized AP with an unauthorized EUD.
Step 3: Verify that the EUD is classified as malicious.
The TSF shall [selection: simultaneously, nonsimultaneously ] monitor and analyze network traffic matching the 802.11 monitoring SFP
for all channels in the following RF frequencies:
2.4 GHz
5.0 GHz
6.0 GHz
and
[selection:
[assignment:
specified Wi-Fi channels] in the 4.9 GHz regulatory domain
The "802.11 monitoring SFP" is a security function policy and the SFRs
that reference this policy describe what the policy does. The "802.11 monitoring SFP"
is established in FDP_IFC.1 and defined through FAU_WID_EXT.1, FAU_WID_EXT.2,
in addition to optional SFRsFAU_WID_EXT.3 and FAU_WID_EXT.4. A vendor does not have to formally define this
policy, it only needs to comply with the SFRs.
The TSF shall provide wireless sensors to detect network traffic matching the
802.11 monitoring SFP that [selection: can be configured to prevent transmission of data, does not transmit data ].
Application
Note:
If "can be configured to prevent transmission of data" is
selected then "Enable/Disable transmission of data by wireless sensor" must be
selected in FMT_SMF.1/WIDS.
The intent of this SFR is to employ WIDS
sensors that can have all wireless transmission capabilities disabled for instances
where a site wishes to implement a no wireless policy.
The "802.11 monitoring SFP" is a security function policy and the SFRs that reference this policy describe
what the policy does. The "802.11 monitoring SFP" is established in FDP_IFC.1 and
defined through FAU_WID_EXT.1, FAU_WID_EXT.2, in addition to optional SFRsFAU_WID_EXT.3 and FAU_WID_EXT.4. A vendor
does not have to formally define this policy, it only needs to comply with the SFRs.
The TSF shall perform stateful frame inspection and log attacks spanning
multiple frames.
Application
Note:
Attackers possess the capability to distribute an attack
across multiple frames in an attempt to avoid traditional detection measures that
solely focus on packet headers. Stateful frame inspection will allow for the
identification of obfuscation techniques centered around spreading an attack across
multiple frames.
The evaluator shall verify that the TSS includes which channels the TOE can
detect and monitor. Additionally, the TSS shall include whether the TOE
simultaneously or nonsimultaneously monitors network traffic across these channels.
The evaluator shall verify that the TSS includes information on if the sensors are
completely passive, by default, or if the sensors ability to transmit data is
configurable.
Guidance
The evaluator shall review the operational guidance for how to configure
the TOE to monitor the channels as selected in the SFR. If the sensor ability to
transmits data is configurable, the evaluator shall review the operational guidance
for how to disable wireless transmissions from the sensor. The evaluator shall verify that the operational guidance provides
instructions on how to specify and confirm that stateful frame capture and
inspection is being performed.
Step 1: Configure the TSF to monitor the channels as selected in the SFR.
Step 2: Deploy AP on at least 2 different channels on non-standard channel
frequencies.
Step 3: Verify that the AP gets detected on each channel tested.
Wireless Sensor Transmission of Data
If the TOE provides the ability to disable wireless transmission, the evaluator shall follow the operational guidance to configure the sensor to not transmit wirelessly. The evaluator shall then deploy a signal analyzer in order to check for wireless emanations from the TOE.
Repeat the two tests below, for both the 2.4 GHz, 5 GHz, and 6 GHz band.
"Authorized" EUDs/APs are those that are assigned to the
allowlist as defined by FMT_SMF.1/WIDS.
The "802.11 monitoring SFP" is
a security function policy and the SFRs that reference this policy describe what the
policy does. The "802.11 monitoring SFP" is established in FDP_IFC.1 and defined
through FAU_WID_EXT.1, FAU_WID_EXT.2,
in addition to optional SFRsFAU_WID_EXT.3 and FAU_WID_EXT.4. A vendor does not have
to formally define this policy, it only needs to comply with the SFRs.
There are no TSS evaluation activities for this SFR.
Guidance
If this functionality is configurable, the evaluator shall verify that the
operational guidance provides instructions on how to configure the TOE to monitor
different types of IEEE 802.11 frame types and subtypes.
[selection: enable, disable ] transmission of data by wireless sensor
Define attack signatures
Define rules for overwriting previous packet captures
Define the amount of time sensor monitors a specific frequency
Define the amount of time sensor monitors a specific channel
Define authorized and unauthorized TCP/IP and UDP traffic
Define known malicious activity ports
No other capabilities
].
Application
Note:
Define authorized WLAN authentication and encryption schemes
does not enforce, but rather establishes a baseline to determine if an unauthorized
scheme is used.
If FAU_ANO_EXT.1 is included in the ST, "Specification
of periods of network activity that constitute baseline of expected behavior" must be
selected. If FAU_ANO_EXT.1 is included in the ST and "manual configuration by
administrators" is selected in FAU_ANO_EXT.1, then "Definition of anomaly activity"
must be selected.
If "can be configured to prevent transmission of
data" is selected in FAU_WID_EXT.2 then "Enable/Disable transmission of data by
wireless sensor" must be selected.
It is expected that an Authorized
Administrator will be responsible for configuring the AP to operate on a specific
frequency pursuant to the 802.11 standard. The TSF will have the ability to adjust
the amount of time it passively monitors and captures WLAN traffic on a given
frequency and channel.
The evaluator shall review the TSS to verify that it includes information the
ability of the TOE to define inventory of authorized APs and EUDs.
The evaluator shall verify that the TSS describes the ability of the TOE to
allow authorized administrators to define authorized WLAN authentication
schemes.
Guidance
The evaluator shall review the operational guidance for instructions on how
to configure and change classification of APs and EUDs to indicate that they are part
of the allowlist.
The evaluator shall review the operational guidance to determine how to configure which SSIDs are permitted on the network.
The evaluator shall examine the operational guidance to verify that it
provides instructions on how to define a WLAN authentication scheme as authorized or
unauthorized for the purposes of detection.
The evaluator shall examine the operational guidance to verify that it
provides instructions on how to define a WLAN encryption scheme as authorized or
unauthorized for the purposes of detection.
Test FMT_SMF.1/WIDS:3:
The evaluator shall configure the TSF with a set of allowed authentication and encryption
schemes. The ability to detect violation of this policy will be tested in FAU_SAA.1.
Test FMT_SMF.1/WIDS:4:
(conditional): If "Define the amount of time sensor monitors a specific frequency or channel" is selected:
Step 1: Deploy an allowlisted AP and connect it to the protected wired
infrastructure via wire.
Step 2: Confirm that the TSF can observe and capture traffic and events
generated by the AP.
Step 3: Verify that the TSF can be configured to capture traffic on a specific
channel for specific interval of time, and assign a specified frequency and
time interval.
Step 4: Confirm that the TSF remains on the frequency and channel for the
time period specified.
5.3 TOE Security Functional Requirements Rationale
The following rationale provides justification for each security objective for the TOE,
showing that the SFRs are suitable to meet and achieve the security objectives:
FAU_RPT_EXT.1 supports the objective by requiring the TSF to implement an external import and reporting mechanism for its monitoring data to integrate with third-party components.
FPT_FLS.1 supports the objective by ensuring that a potential sensor failure triggers the TOE to fail into a secure state which prevents undetected wireless communications.
FAU_INV_EXT.3 supports the objective by requiring the TSF to implement measures that can be used to determine the physical location of inventoried devices.
FAU_SAA.1 supports the objective by defining the specific conditions that the TSF must apply to determine if collected data is indicative of potential malicious activity.
FAU_WID_EXT.1 supports the objective by requiring the TSF to implement a method to distinguish between benign and malicious devices in its operational environment.
FAU_WID_EXT.3 supports the objective by optionally requiring the TSF to detect network devices operating on frequency bands beyond what is required by FAU_WID_EXT.2.
FAU_ANO_EXT.1 supports the objective by defining the specific anomaly-based detection mechanisms that the TSF is required to implement if it claims to support anomaly-based detection.
FAU_SIG_EXT.1 supports the objective by requiring the TSF to support user-defined and customizable attack signatures if it claims to support signature-based detection.
FAU_INV_EXT.4 supports the objective by optionally requiring the TSF to detect when unauthorized wireless devices connect to a protected network over a wired interface.
FPT_FLS.1 supports the objective by ensuring that a potential compromise of the TSF triggers the TOE to fail into a secure state, which prevents unauthorized administration.
FTP_ITC.1 supports the objective by defining the trusted communications protocol used to secure communications between the TOE and its operational environment.
6 Consistency Rationale
6.1 Collaborative
Protection Profile for Network Device
6.1.1
Consistency of TOE Type
When this PP-Module extends the Network Device cPP, the TOE type for the overall TOE
is still WIDS/WIPS products.
This threat is similar to the T.UNDETECTED_ACTIVITY threat in the Base-PP
but it applies to the attacker performing malicious actions on the network monitored by the TOE rather than against the TOE itself.
This threat is similar to the T.UNAUTHORIZED_ADMINISTRATOR_ACCESS threat in the Base-PP
but it applies to the attacker gaining unauthorized access to an asset on the network monitored by the TOE rather than against the TOE itself.
This threat is for a denial-of-service attack against an asset on the network monitored by the TOE.
The Base-PP does not define any threats for availability but there is no consistency issue here because the threat applies to an interface that does not exist in the Base-PP.
This assumption defines the TOE’s placement in a network such that it is able to perform its required security functionality.
The Base-PP does not define any assumptions about the TOE’s architectural deployment so there is no conflict here.
This assumption is comparable to the A.TRUSTED_ADMINISTRATOR assumption from the Base-PP, applied to the specific administrative functions defined in this PP-Module.
This organizational security policy expects the data produced by the TSF about the behavior of external entities to be used in an organization’s analytical process.
There is no conflict with the Base-PP because the Base-PP does not define any functionality for the TOE to produce data about any entities other than itself.
6.1.3
Consistency of Objectives
The objectives for the TOEs are consistent with the NDcPP based on the following rationale:
The Base-PP does not define any TOE objectives. However, it does define requirements for the collection and secure remote transmission of audit data.
The PP-Module adds requirements for the similar handling of network traffic data.
The Base-PP does not define any TOE objectives. However, it does define requirements for the execution of security-relevant management functions.
The PP-Module expands upon this by adding requirements for the security-relevant management functions that are introduced by the PP-Module.
The Base-PP does not define any TOE objectives. However, it clearly intends to ensure that communications are trusted because the SFRs the PP-Module
uses to demonstrate this objective is satisfied are derived from the Base-PP.
The objectives for the TOE's OE are consistent with the NDcPP based on the following rationale:
This objective expects the TOE to be placed in a network such that it is able to perform its required security functionality.
The Base-PP does not define any objectives about the TOE’s architectural deployment so there is no conflict here.
This objective is comparable to the OE.TRUSTED_ADMIN objective from the Base-PP, applied to the specific administrative functions defined in this PP-Module.
6.1.4
Consistency of Requirements
This PP-Module identifies several SFRs from the
NDcPP that are needed to support
Wireless Intrusion Detection/Prevention System functionality.
This is considered to be consistent because the functionality provided by the
NDcPP is being used for its intended purpose.
The PP-Module also identifies a number of modified SFRs from the
NDcPP
that are used entirely to provide functionality for
Wireless Intrusion Detection/Prevention System.
The rationale for why this does not conflict with the claims
defined by the
NDcPP are as follows:
This PP-Module mandates the inclusion of this selection-based SFR because a TOE that conforms to this PP-Module will always be deployed in a configuration that requires this SFR to be claimed.
This PP-Module refines the Base-PPSFR to add a selection for a specific external entity that may be applicable to a TOE that conforms to this PP-Module.
This SFR defines operations to be performed on collected WIDS data, which is collected using an external interface defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on collected WIDS data, which is collected using an external interface defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on collected WIDS data, which is collected using an external interface defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on collected WIDS data, which is collected using an external interface defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on collected WIDS data, which is collected using an external interface defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines an optional capability for a distributed component to be dedicated to one particular function.
This function (wireless spectrum analysis) is defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on assets in the TOE’s operational environment, which is behavior defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines WIPS behavior in response to detection of potential malicious activity in the TOE’s operational environment. This extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines preservation of a secure state in the event that a failure condition is detected.
The Base-PP does not define an SFR for this behavior but this SFR mitigates the T.SECURITY_FUNCTIONALITY_FAILURE threat defined in the Base-PP,
so it is clear that this behavior is consistent with the security expectations of the Base-PP.
This SFR defines operations to be performed on collected WIDS data, which is collected using an external interface defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
This SFR defines operations to be performed on collected WIDS data, which is collected using an external interface defined in this PP-Module that extends the logical scope of the TOE beyond what the Base-PP defines.
The TSF shall detect the presence of network devices that operate in the
following RF bands: [selection: 3.6 GHz, 6 GHz, 60 GHz, sub-GHz (0-900 MHz), all cellular bands ].
Application
Note:
This SFR refers to Non-WLAN (IEEE 802.11 a, b, g, n, y, ac, ad and ay)
network devices that operate in the specified frequencies. There is an understanding that this
capability requires a TOE to use specialized, licensed radio systems. This SFR will allow for the introduction of an
open API, set of defined interoperability standards, or other proprietary solution(s), to allow for third-party
integration.
The evaluator shall verify that the TSS includes the set of RF bands and
technologies that the TSF can detect the use of. The TSS should also include
instructions on how to enable and the hardware that is necessary for the additional
band detection.
Guidance
The evaluator shall verify that the operational guidance describes how to
enable and configure detection of the technologies included in the ST as well as the
hardware that is needed to perform this function.
Tests
The evaluator shall enable and configure detection of the selected
technologies.
Test FAU_WID_EXT.3:1:
Deploy a device within the given technology and verify that the TSF detects
the device.
The evaluator shall verify that the TSS to verify that the TOE provides a
dedicated sensor for wireless spectrum analysis.
Guidance
The evaluator shall verify that the operational guidance describes how to
enable and configure dedicated spectrum analysis as well as the hardware that is
needed to perform this function.
Tests
The evaluator shall enable and configure dedicated spectrum analysis and test
the capabilities listed in the TSS.
FAU_WID_EXT.5 Wireless Intrusion Detection - Bluetooth Spectrum Monitoring
The TSF shall detect the presence of cellular devices that operate within the
following ways, frequency ranges, and parameters:
[selection: Detect and log the presence of 2.4 GHz Bluetooth BR/EDR devices operating within a controlled space, Detect and log the presence of Bluetooth Low Energy (BLE) devices operating within a controlled space, Detect and log the the Bluetooth BR/EDR devices LAP and half the Bluetooth MAC address within a controlled space, Detect and log the BLE device's Bluetooth MAC address within a controlled space, Geo-locate Bluetooth BR/EDR devices within 25 feet of their actual location, Geo-locate BLE devices within 25 feet of their actual location, Detect and log Bluetooth BR/EDR devices conducting the Inquiry Procedure within a controlled space, Detect and log Bluetooth BR/EDR devices responding to the Inquiry Procedure within the controlled space, Capture and log any device information transmitted during the Bluetooth BR/EDR Inquiry Procedure when occurring within a controlled space, Detect and log BLE devices advertisements on the Advertisement channels, Detect and log BLE devices exchanging information or data on the Advertisement channels, Detect and log Bluetooth BR/EDR devices using the SDP procedure, Capture and log any device information exchanged during the Bluetooth BR/EDR SDP procedure, Detect and log any Bluetooth BR/EDR devices performing the Paging Procedure, Detect and log any BLE device performing the Paging Procedure, Detect and log the piconet membership of any Bluetooth BR/EDR device. This includes role in the piconet (Central or Peripheral), piconet ID, device ID, and number of piconets which they are members of, Detect and log the piconet membership of any Low Energy (LE) device. This includes role in the piconet (Central or Peripheral), piconet ID, device ID, and number of piconets which they are members of, Use Bluetooth BR/EDR Inquiry Procedure to detect Bluetooth BR/EDR devices in discoverable mode within a controlled area, Use Bluetooth BR/EDR SDP procedure to gether information about Bluetooth BR/EDR devices within a controlled area, Use BLE SDP procedure to gather information about BLE devices within a controlled area ]
Application
Note:
This SFR refers to Bluetooth and Bluetooth Low-Energy (BLE) (IEEE 802.15)
network devices that operate in the specified frequencies. There is an understanding that this
capability requires a TOE to use specialized, licensed radio systems. This SFR will allow for the introduction of an
open API, set of defined interoperability standards, or other proprietary solution(s), to allow for third-party
integration.
The evaluator shall verify that the TSS includes the set of RF bands and
technologies that the TSF can detect the use of. The TSS should also include
instructions on how to enable and the hardware that is necessary for the additional
band detection.
Guidance
The evaluator shall verify that the operational guidance describes how to
enable and configure detection of the technologies included in the ST as well as the
hardware that is needed to perform this function.
Tests
The evaluator shall enable and configure detection of the selected
technologies.
Test FAU_WID_EXT.5:1:
Deploy a device within the given technology and verify that the TSF detects
the device.
The TSF shall detect the presence of cellular devices that operate within the
following ways, ranges, and parameters: [selection: Detect and log the presence of cellular 3G devices operating within a controlled space, Detect and log the presence of cellular 4G/LTE devices operating within a controlled space, Detect and log the presence of cellular 5G low and mid-band devices operating within a controlled space, Detect and identify base stations which had clients within the area monitored by the WIDS, Capture temporary identifiers (e.g. TMSI) of cellular devices within a controlled space, Detect and identify which cellular technology (such as 3G, LTE, UTMS, 5G, etc.) the cellular device is using within a controlled space, Detect and identify which cellular carrier a cellular device is using within a controlled space, Detect identify which base station a cellular device is connnected to while operating within a controlled space, Detect identify whether a cellular device is using a cellular uplink or downlink operating within a controlled space, Geo-locate cellular devices operating within the operation area of the WIDS ].
Application
Note:
This SFR refers to Bluetooth and Bluetooth Low-Energy (BLE) (IEEE 802.15)
network devices that operate in the specified frequencies. There is an understanding that this
capability requires a TOE to use specialized, licensed radio systems. This SFR will allow for the introduction of an
open API, set of defined interoperability standards, or other proprietary solution(s), to allow for third-party
integration.
The evaluator shall verify that the TSS includes the set of RF bands and
technologies that the TSF can detect the use of. The TSS should also include
instructions on how to enable and the hardware that is necessary for the additional
band detection.
Guidance
The evaluator shall verify that the operational guidance describes how to
enable and configure detection of the technologies included in the ST as well as the
hardware that is needed to perform this function.
Tests
The evaluator shall enable and configure detection of the selected
technologies.
Test FAU_WID_EXT.5:1:
Deploy a device within the given technology and verify that the TSF detects
the device.
A.2 Objective Requirements
A.2.1 Security Audit (FAU)
FAU_INV_EXT.4 Detection of Unauthorized Connections
The evaluator shall verify that the TSS includes guidance on whether the TSF has
the capability of detecting APs connecting to the protected wired network
infrastructure. If the capability is present the TSS shall include configuration
guidance for this feature.
Guidance
The evaluator shall review the operational guidance for instructions on how
to configure the WIDS to detect unauthorized APs connected to the protected wired
infrastructure.
There are no TSS evaluation activities for this SFR.
Guidance
The evaluator shall review the operational guidance for instructions on how
to locate and verify that the WIDS comes preloaded with a signal library, as well as
possesses the ability to import, export, and update the existing signal library if
present.
Tests
Depending on operation guidance provided for the TOE, the evaluator shall
confirm and note the existence of the signal library, and test for the ability to
import, export, and update the signal library.
The TSF shall detect when two sensors in non-overlapping locations receive
traffic from the same MAC address simultaneously.
Application
Note:
The intent of this SFR is to detect MAC spoofing where an
attacker is able to cause the allowlisted EUD to disconnect and promptly connects a
non-allowlisted device using the MAC address of the allowlisted EUD.
The TSF shall detect when two sensors in non-overlapping locations receive
traffic from the MAC addresses of non-allowlisted EUDs within an Authorized
administrator-configurable timeframe based on distance between sensors.
Application
Note:
The intent of this SFR is to allow the administrator to
determine the time that should be allowed between an allowlisted EUD connecting in two
distant locations.
The evaluator shall verify that the TSS describes the behavior of the TOE when
two sensors in non-overlapping locations receive traffic from the same MAC address
simultaneously.
Guidance
The evaluator shall verify that the operational guidance provides
instructions on how to deploy the TOE in a manner that allows the TSF to detect when
two sensors in non-overlapping locations receive traffic from the same MAC address
simultaneously (i.e. information about the range and placement of sensors to ensure
non-overlapping coverage).
The evaluator shall verify that the
operational guidance provides instructions on how to configure the timeframe that
should be allowed between two subsequent attempts for an EUD to connect from two
separate locations.
Step 3: Setup a second allowlisted AP and a non-allowlisted EUD in a separate
non-overlapping location where the WIDS also has sensors. Or simulate the
distant non-overlapping locations by deploying the second AP in a shielded
environment connected to the valid network (Location 2).
Step 4: Spoof the MAC address of the EUD in location 1 with the EUD in location
2 and connect it to the allowlisted AP in location 2. Make sure both EUDs
are connected at the same time.
Step 5: Verify that the TSF detected and generated an alert.
Step 4: Setup a second allowlisted AP and a non-allowlisted EUD in a separate
non-overlapping location where the WIDS also has sensors. Or simulate the
distant non-overlapping locations by deploying the second AP in a shielded
environment connected to the valid network (Location 2).
Step 5: Spoof the MAC address of the EUD in location 1 with the EUD in location
2 and connect it to the allowlisted AP in location 2. Make sure that the
time between connections is shorter than the time timeframe
allowed/configured.
Step 6: Verify that the TSF detected and generated an alert.
The TSF shall allow an Authorized Administrator to isolate a wireless AP or EUD
from the network monitored by the TSF using the following methods: [selection: wireless containment, wire-side containment of an unauthorized AP connected to the internal
corporate wired network ].
Application
Note:
It is expected that an Authorized Administrator will be
responsible for confirming the AP or EUD as a rogue AP or EUD to initiate wireless
containment.
In this SFR the containment of an an unauthorized AP
connected to the internal corporate wired network refers to an unauthorized AP that is
physically connected (via wire) to the protected internal wired infrastructure.
Step 1: Deploy a non-allowlisted AP and connect to the protected wired
infrastructure via wire (make sure it gets classified as rogue, or manually
classify as such).
The evaluator shall review the TSS section to determine that the TOE’s
implementation of the fail secure functionality is documented. The evaluator shall
examine the TSS section to ensure that all failure modes specified in the ST are
described.
Guidance
The evaluator shall review the operational guidance to verify that it
identifies the potential TOE failures, how the TSF preserves a secure state
following these failures, and any actions that are required to restore the TOE to
normal operation following the transition to a failure state.
Tests
Test FPT_FLS.1:1:
For each failure mode specified in the ST, the evaluator shall ensure that
the TOE attains a secure state after initiating each failure mode type.
A.3 Implementation-based Requirements
This PP-Module does not define any
Implementation-based SFRs.
Appendix B - Selection-based Requirements
B.1 Security Audit (FAU)
FAU_ANO_EXT.1 Anomaly-Based Intrusion Detection
The inclusion of this selection-based component depends upon selection in
FAU_IDS_EXT.1.1.
The TSF shall support the definition of [selection: baselines ('expected and approved'), anomaly ('unexpected') traffic patterns ] including the specification of [selection:
throughput (data elements (e.g. bytes, packets, etc.) per time period
(e.g. minutes, hours, days))
The TSF shall support the definition of anomaly activity through [selection: manual configuration by administrators, automated configuration ].
Application
Note:
The "baseline" and "anomaly" can be something manually
defined/configured by a TOE administrator (or importing definitions), or something
that the TOE is able to automatically define/create by inspecting network traffic over
a period of time (a.k.a. "profiling").
The evaluator shall verify that the TSS describes the composition and
construction of baselines or anomaly-based attributes specified in the SFR. The
evaluator shall verify that the TSS provides a description of how baselines are
defined and implemented by the TSF, or a description of how anomaly-based rules are
defined and configured by the administrator.
The evaluator shall
verify that the TSS describes the available modes of configuration (manual or
automatic) and how to configure or import the baseline.
Guidance
The evaluator shall verify that the operational guidance describes how to
configure baseline and/or anomalous traffic patterns based on what is stated in the
TSS.
The evaluator shall verify that the operational guidance
describes how to perform automatic and/or manual definition of anomaly activity
based on what is selected in the ST.
Tests
The evaluator shall use the instructions in the operational guidance to
configure baselines or anomaly-based rules through automated and/or manual means
based on what is selected in the ST. The evaluator shall send traffic that does not
match the baseline or matches the anomaly-based rule and verify the TSF detects the
anomalous behavior and generates an alert.
FAU_SIG_EXT.1 Signature-Based Intrusion Detection
The inclusion of this selection-based component depends upon selection in
FAU_IDS_EXT.1.1.
The evaluator shall verify that the TSS describes the user-defined and
customizable attack signatures that the TOE can define.
Guidance
The evaluator shall verify that the operational guidance provides
information on how to configure user-defined and customizable attack signatures,
including a description of the customization options that are
available.
The TSF shall be able to transmit the generated packet captures to an external IT
entity hosting a protocol analyzer using a trusted channel according to FTP_ITC.1.
The TSF shall be able to store generated packet captures on the TOE itself. In addition [selection:
The TOE shall be a distributed TOE that stores packet capture data on the following TOE components: [assignment:
identification of TOE components]
The TOE shall be a distributed TOE with storage of packet capture data provided externally for the following TOE components:
[assignment:
list of TOE components that do not store packet capture data locally and the other TOE components to which they transmit their generated packet capture data]
The TSF shall [selection: drop new packet capture data, overwrite previous packet captures according to the following rule:
[assignment:
rule for overwriting previous packet captures], [assignment:
other action] ] when the local storage space for packet capture data is full.
The evaluator shall verify that the TSS includes the list of trusted channels
(as specified in FTP_ITC.1) available in the TSF to transmit packet captures to an
external entity. The evaluator shall verify that the TSS describes the ability of
the TOE to store packet capture data within itself, how much storage space is
available for packet capture data and where that data is stored. The evaluator shall
verify that the TSS describes the behavior of the TOE when local storage space for
packet capture data is exhausted and whether this behavior is
configurable.
Guidance
The evaluator shall verify that the operational guidance provides
instructions on how to configure the trusted channel. If the behavior of the TOE
when local storage space for packet capture data is exhausted is configurable, the
evaluator shall verify that the operational guidance provides information on what
the configurable behaviors are and how they can be set.
Tests
Test FAU_STG_EXT.1/PCAP:1:
The evaluator shall configure packet captures according to the guidance
specified. The evaluator shall then trigger an event that starts a capture and
verify through the tests in FTP_ITC.1 that the captured traffic being sent to
the external device is being sent through a trusted channel.
Test FAU_STG_EXT.1/PCAP:2:
The evaluator shall configure packet captures to be stored on the TSF
according to the guidance specified. The evaluator shall then trigger an event
that starts a capture and verify that the packet capture was stored on the
TSF.
Test FAU_STG_EXT.1/PCAP:3:
The evaluator shall define packet data retention and deletion rules on the
TSF according to the guidance specified and test the functionality of the
specified rules.
Appendix C - Extended Component Definitions
This appendix contains the definitions for all extended requirements specified in the PP-Module.
C.1 Extended Components Table
All extended components specified in the PP-Module are listed in this table:
This PP-Module defines the following extended components as part of the
FAU class originally defined by CC Part 2:
C.2.1.1 FAU_ARP_EXT Security Alarm Filtering
Family Behavior
This family defines requirements for suppression of audit events. It is intended to complement the FAU_ARP family already defined in CC Part 2.
Component Leveling
FAU_ARP_EXT.1,
Security Alarm Filtering,
requires the TSF to implement a filtering mechanism to selectively suppress the generation of security alarms.
Management: FAU_ARP_EXT.1
No specific management functions have been identified.
The TSF shall provide the ability to apply [assignment:
methods of
selection] to selectively exclude alerts from being generated.
C.2.1.2 FAU_IDS_EXT Intrusion Detection Methods
Family Behavior
This family defines requirements for supported methods of intrusion detection.
Component Leveling
FAU_IDS_EXT.1,
Intrusion Detection System - Intrusion Detection Methods,
requires the TSF to specify the methods of intrusion detection that it supports.
Management: FAU_IDS_EXT.1
No specific management functions are identified.
Audit: FAU_IDS_EXT.1
There are no auditable events foreseen.
FAU_IDS_EXT.1 Intrusion Detection System - Intrusion Detection Methods
Hierarchical to:
No other components.
Dependencies to:
No dependencies.
FAU_IDS_EXT.1.1
The TSF shall detect intrusions using
[assignment:
detection strategies]
methods.
C.2.1.3 FAU_INV_EXT Environmental Inventory
Family Behavior
This family defines requirements for detection and inventorying of network assets in the TOE’s operational environment.
Component Leveling
FAU_INV_EXT.1,
Environmental Inventory,
requires the TSF to determine if inventoried objects are authorized or unauthorized.
FAU_INV_EXT.2,
Characteristics of Environmental Objects,
requires the TSF to discover network assets in its operational environment and maintain an inventory of them based on collected attributes.
FAU_INV_EXT.3,
Location of Environmental Objects,
requires the TSF to approximate the physical location of network assets in its operational environment based on triangulation of wireless emissions.
FAU_INV_EXT.4,
Detection of Unauthorized Connections,
requires the TSF to identify if an unauthorized network asset in its inventory is attempting to access a protected network using a wired connection.
FAU_INV_EXT.5,
Signal Library,
requires the TSF to maintain a signal library.
Management: FAU_INV_EXT.1
The following actions could be considered for the management functions in FMT:
Definition of inventory of authorized APs based on MAC address
Definition of inventory of authorized EUDs based on MAC address
Audit: FAU_INV_EXT.1
The following actions should be auditable if FAU_GEN Security Audit Data Generation is included in the PP/ST:
Presence of allowlisted device
FAU_INV_EXT.1 Environmental Inventory
Hierarchical to:
No other components.
Dependencies to:
FAU_INV_EXT.2 Characteristics of Environmental Objects
FAU_INV_EXT.1.1
The TSF shall determine if a given AP is authorized based on [selection: MAC addresses, [assignment:
other unique device identifier] ]
FAU_INV_EXT.1.2
The TSF shall determine if a given EUD is authorized based on [selection: MAC addresses, [assignment:
other unique device identifier] ]
FAU_INV_EXT.1.3
The TSF shall detect the presence of non-allowlisted EUDs and APs in the Operational Environment.
Management: FAU_INV_EXT.2
The following actions could be considered for the management functions in FMT:
Definition of classification rules to detect rogue APs
Audit: FAU_INV_EXT.2
There are no auditable events foreseen.
FAU_INV_EXT.2 Characteristics of Environmental Objects
FAU_INV_EXT.2 Characteristics of Environmental Objects
FAU_INV_EXT.3.1
The TSF shall detect the physical location of rogue APs and EUDs, and [selection: allow-listed APs, allow-listed EUDs, neighboring APs and EUDs, no other devices ] to within [assignment:
value equal or less than 25] feet of their actual location.
FAU_INV_EXT.3.2
The TSF shall detect received signal strength and [selection: RF power levels above a predetermined threshold, no other characteristics ] of hardware operating within range of the TOE’s wireless sensors.
Management: FAU_INV_EXT.4
No specific management functions are identified.
Audit: FAU_INV_EXT.4
There are no auditable events foreseen.
FAU_INV_EXT.4 Detection of Unauthorized Connections
This family defines requirements for the format of generated reports.
Component Leveling
FAU_RPT_EXT.1,
Intrusion Detection System - Reporting Methods,
requires the TSF to implement a specified reporting mechanism for collected data for compatibility with third parties that may consume this data.
Management: FAU_RPT_EXT.1
No specific management functions are identified.
Audit: FAU_RPT_EXT.1
There are no auditable events foreseen.
FAU_RPT_EXT.1 Intrusion Detection System - Reporting Methods
Syslog using [selection: defined API, Syslog, [assignment:
other detection method] ]
SNMP trap reporting using [selection: defined API, Simple Network Management Protocol (SNMP), [assignment:
other detection method] ]
] for reporting of collected data.
FAU_RPT_EXT.1.2
The TSF shall provide the ability to import data, such as an allowlist of APs and EUDs, and WIDS/WIPS configuration files from the system using [selection: custom API, Syslog, common log format, comma separated values (CSV), [assignment:
vendor detection method] ].
C.2.1.5 FAU_WID_EXT Wireless Intrusion Detection
Family Behavior
This family defines requirements for data collection of potentially malicious wireless network activity.
Component Leveling
FAU_WID_EXT.1,
Wireless Intrusion Detection - Malicious Environmental Objects,
requires the TSF to implement a mechanism to distinguish between authorized and unauthorized network assets.
FAU_WID_EXT.2,
Wireless Intrusion Detection - Passive Information Flow Monitoring,
requires the TSF to surveil certain wireless frequency bands and perform stateful inspection of traffic on them.
FAU_WID_EXT.3,
Wireless Intrusion Detection - Non-Wireless Spectrum Monitoring,
requires the TSF to surveil certain radio frequency bands that fall outside the typical wireless spectrum used by consumer-grade electronics.
FAU_WID_EXT.4,
Wireless Intrusion Detection - Wireless Spectrum Analysis,
requires the TSF to implement wireless spectrum analysis in a dedicated physical component.
FAU_WID_EXT.5,
Wireless Intrusion Detection - Bluetooth Spectrum Monitoring,
requires the TSF to surveil certain radio frequency bands that fall outside the typical wireless spectrum used by consumer-grade electronics.
FAU_WID_EXT.5,
Wireless Intrusion Detection - Cellular Spectrum Monitoring,
requires the TSF to surveil certain radio frequency bands that fall outside the typical wireless spectrum used by consumer-grade electronics.
Management: FAU_WID_EXT.1
The following actions could be considered for the management functions in FMT:
The TSF shall distinguish between benign and malicious APs and EUDs based on if the APs and EUDs are authorized and [selection: automatic detection metrics, no other method ].
FAU_WID_EXT.1.2
The TSF shall provide the ability to determine if a given SSID is authorized.
Management: FAU_WID_EXT.2
The following actions could be considered for the management functions in FMT:
Definition of authorized and unauthorized TCP/IP and UDP traffic
Definition of known malicious activity ports
Definition of the amount of time that a sensor monitors a specific frequency or channel
Audit: FAU_WID_EXT.2
The following actions should be auditable if FAU_GEN Security Audit Data Generation is included in the PP/ST:
Sensor wireless transmission capabilities
FAU_WID_EXT.2 Wireless Intrusion Detection - Passive Information Flow Monitoring
Hierarchical to:
No other components.
Dependencies to:
No dependencies.
FAU_WID_EXT.2.1
The TSF shall [selection: simultaneously, nonsimultaneously ] monitor and analyze network traffic matching the 802.11 monitoring SFP
for all channels in the following RF frequencies:
[assignment:
a list of frequency ranges]
.
FAU_WID_EXT.2.2
The TSF shall provide wireless sensors to detect network traffic matching the
802.11 monitoring SFP that [selection: can be configured to prevent transmission of data, does not transmit data ].
FAU_WID_EXT.2.3
The TSF shall perform stateful frame inspection and log attacks spanning
multiple frames.
Management: FAU_WID_EXT.3
No specific management functions are identified.
Audit: FAU_WID_EXT.3
The following actions should be auditable if FAU_GEN Security Audit Data Generation is included in the PP/ST:
Detection of network devices operating in selected RF bands
This family defines requirements for detection of malicious network activity based on anomalous behavior.
Component Leveling
FAU_ANO_EXT.1,
Anomaly-Based Intrusion Detection,
requires the TSF to define how it determines anomalous network traffic that may be indicative of malicious activity.
Management: FAU_ANO_EXT.1
The following actions could be considered for the management functions in FMT:
Specification of periods of network activity that constitute baselines of expected behavior
Definition of anomaly activity
Audit: FAU_ANO_EXT.1
There are no auditable events foreseen.
FAU_ANO_EXT.1 Anomaly-Based Intrusion Detection
Hierarchical to:
No other components.
Dependencies to:
FAU_IDS_EXT.1 Intrusion Detection System - Intrusion Detection Methods
FAU_ANO_EXT.1.1
The TSF shall support the definition of [selection: baselines ('expected and approved'), anomaly ('unexpected') traffic patterns ] including the specification of [selection:
throughput (data elements (e.g. bytes, packets, etc.) per time period
(e.g. minutes, hours, days))
time of day
frequency
thresholds
[assignment:
other methods]
] and the following network protocol fields:
all management and control frame header elements.
FAU_ANO_EXT.1.2
The TSF shall support the definition of anomaly activity through [selection: manual configuration by administrators, automated configuration ].
This family defines requirements for detection of malicious network activity based on traffic signatures.
Component Leveling
FAU_SIG_EXT.1,
Signature-Based Intrusion Detection,
requires the TSF to support the definition of traffic signatures that can be compared to observed network traffic for the purpose of identifying potential malicious activity.
Management: FAU_SIG_EXT.1
The following actions could be considered for the management functions in FMT:
Definition of attack signatures
Audit: FAU_SIG_EXT.1
There are no auditable events foreseen.
FAU_SIG_EXT.1 Signature-Based Intrusion Detection
Hierarchical to:
No other components.
Dependencies to:
FAU_IDS_EXT.1 Intrusion Detection System - Intrusion Detection Methods
FAU_SIG_EXT.1.1
The TSF shall support user-defined and customizable attack signatures.
C.2.1.8 FAU_MAC_EXT Device Impersonation
Family Behavior
This family defines requirements for detection of potential device impersonation on the basis of MAC address spoofing.
Component Leveling
FAU_MAC_EXT.1,
Device Impersonation,
requires the TSF to detect possible MAC address spoofing using various methods.
Management: FAU_MAC_EXT.1
No specific management functions are identified.
Audit: FAU_MAC_EXT.1
There are no auditable events foreseen.
FAU_MAC_EXT.1 Device Impersonation
Hierarchical to:
No other components.
Dependencies to:
FAU_INV_EXT.2 Characteristics of Environmental Objects
FAU_MAC_EXT.1.1
The TSF shall detect when two sensors in non-overlapping locations receive
traffic from the same MAC address simultaneously.
FAU_MAC_EXT.1.2
The TSF shall detect when two sensors in non-overlapping locations receive
traffic from the MAC addresses of non-allowlisted EUDs within an Authorized
administrator-configurable timeframe based on distance between sensors.
C.2.1.9 FAU_WIP_EXT Wireless Intrusion Prevention
Family Behavior
This family defines requirements for wireless intrusion prevention.
Component Leveling
FAU_WIP_EXT.1,
Wireless Intrusion Prevention,
requires the TSF to support reactive behavior if potential malicious traffic is observed to be originating from or targeted to a particular network asset.
Management: FAU_WIP_EXT.1
The following actions could be considered for the management functions in FMT:
Enabling or disabling transmission of data by wireless sensor
Audit: FAU_WIP_EXT.1
The following actions should be auditable if FAU_GEN Security Audit Data Generation is included in the PP/ST:
The TSF shall allow an Authorized Administrator to isolate a wireless AP or EUD
from the network monitored by the TSF using the following methods: [selection: wireless containment, wire-side containment of an unauthorized AP connected to the internal
corporate wired network ].
Appendix D - Implicitly Satisfied Requirements
This appendix lists requirements that should be considered satisfied by products
successfully evaluated against this PP-Module. These requirements are not featured
explicitly as SFRs and should not be included in the ST. They are not included as
standalone SFRs because it would increase the time, cost, and complexity of evaluation.
This approach is permitted by [CC] Part 1, 8.2 Dependencies between components.
This information benefits systems engineering activities which call for inclusion of particular
security controls. Evaluation against the PP-Module provides evidence that these controls are present
and have been evaluated.
Requirement
Rationale for Satisfaction
FDP_IFF.1 - Information Flow Control Functions
CC Part 2 specifies FDP_IFF.1 as a dependency of FDP_IFC.1 because the TSF must define the information flow control SFP rules associated with a given SFP.
This dependency is implicitly addressed through FAU_WID_EXT.2, which defines the rules for the 802.11 monitoring SFP defined by FDP_IFC.1.
Appendix E - Allocation of Requirements in Distributed TOEs
For a distributed TOE, the security functional requirements in this PP-Module need to be met by the
TOE as a whole, but not all SFRs will necessarily be implemented by all components. The
following categories are defined in order to specify when each SFR must be implemented by a
component:
All Components ("All") - All components that comprise the distributed TOE must
independently satisfy the requirement.
At least one Component ("One") - This requirement must be fulfilled by at least one
component within the distributed TOE.
Feature Dependent ("Feature Dependent") - These requirements will only be
fulfilled where the feature is implemented by the distributed TOE component (note
that the requirement to meet the PP-Module as a whole requires that at least one component
implements these requirements if they are claimed by the TOE).
The table below specifies how each of the SFRs in this PP-Module must be met, using the categories above.
