Certification Report
EAL 4+ Evaluation of Nortel VPN Router v7.05 and
Client Workstation v7.11
Issued by:
Communications Security Establishment Canada
Certification Body
Canadian Common Criteria Evaluation and Certification Scheme
© 2008 Government of Canada, Communications Security Establishment Canada
Document number: 383-4-69-CR
Version: 1.1
Date: 27 August 2008
Pagination: i to iv, 1 to 11
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DISCLAIMER
The Information Technology (IT) product identified in this certification report, and its
associated certificate, has been evaluated at an approved evaluation facility – established
under the Canadian Common Criteria Evaluation and Certification Scheme (CCS) – using
the Common Methodology for Information Technology Security Evaluation, Version 2.3, for
conformance to the Common Criteria for IT Security Evaluation, Version 2.3. This
certification report, and its associated certificate, apply only to the identified version and
release of the product in its evaluated configuration. The evaluation has been conducted in
accordance with the provisions of the CCS, and the conclusions of the evaluation facility in
the evaluation report are consistent with the evidence adduced. This report, and its associated
certificate, are not an endorsement of the IT product by the Communications Security
Establishment Canada, or any other organization that recognizes or gives effect to this report,
and its associated certificate, and no warranty for the IT product by Communications
Security Establishment Canada, or any other organization that recognizes or gives effect to
this report, and its associated certificate, is either expressed or implied.
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FOREWORD
The Canadian Common Criteria Evaluation and Certification Scheme (CCS) provides a
third-party evaluation service for determining the trustworthiness of Information Technology
(IT) security products. Evaluations are performed by a commercial Common Criteria
Evaluation Facility (CCEF) under the oversight of the CCS Certification Body, which is
managed by the Communications Security Establishment Canada.
A CCEF is a commercial facility that has been approved by the CCS Certification Body to
perform Common Criteria evaluations; a significant requirement for such approval is
accreditation to the requirements of ISO Standard 17025, General requirements for the
accreditation of calibration and testing laboratories. Accreditation is performed under the
Program for the Accreditation of Laboratories Canada (PALCAN), administered by the
Standards Council of Canada.
The CCEF that carried out this evaluation is EWA-Canada located in Ottawa, Ontario.
By awarding a Common Criteria certificate, the CCS Certification Body asserts that the
product complies with the security requirements specified in the associated security target. A
security target is a requirements specification document that defines the scope of the
evaluation activities. The consumer of certified IT products should review the security target,
in addition to this certification report, in order to gain an understanding of any assumptions
made during the evaluation, the IT product's intended environment, its security requirements,
and the level of confidence (i.e., the evaluation assurance level) that the product satisfies the
security requirements.
This certification report is associated with the certificate of product evaluation dated 20
August 2008, and the security target identified in Section 4 of this report.
The certification report, certificate of product evaluation and security target are posted on the
CCS Certified Products list at: http://www.cse-cst.gc.ca/services/common-criteria/trusted-
products-e.html and http://www.commoncriteriaportal.org
This certification report makes reference to the following trademarked names:
• Nortel, the Nortel logo and the Globemark are trademarks of Nortel Networks.
Reproduction of this report is authorized provided the report is reproduced in its entirety.
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TABLE OF CONTENTS
Disclaimer....................................................................................................................................... i
Foreword........................................................................................................................................ii
Executive Summary...................................................................................................................... 1
1 Identification of Target of Evaluation ................................................................................ 2
2 TOE Description ................................................................................................................... 2
3 Evaluated Security Functionality........................................................................................ 2
4 Security Target...................................................................................................................... 3
5 Common Criteria Conformance.......................................................................................... 3
6 Security Policy....................................................................................................................... 3
7 Assumptions and Clarification of Scope............................................................................. 4
7.1 SECURE USAGE ASSUMPTIONS................................................................................... 4
7.2 ENVIRONMENTAL ASSUMPTIONS ............................................................................... 4
7.3 CLARIFICATION OF SCOPE.......................................................................................... 4
8 Architectural Information ................................................................................................... 4
9 Evaluated Configuration...................................................................................................... 5
10 Documentation ...................................................................................................................... 5
11 Evaluation Analysis Activities ............................................................................................. 5
12 ITS Product Testing.............................................................................................................. 6
12.1 ASSESSING DEVELOPER TESTS................................................................................... 7
12.2 INDEPENDENT FUNCTIONAL TESTING ........................................................................ 7
12.3 INDEPENDENT PENETRATION TESTING....................................................................... 7
12.4 CONDUCT OF TESTING ............................................................................................... 8
12.5 TESTING RESULTS...................................................................................................... 8
13 Results of the Evaluation...................................................................................................... 8
14 Evaluator Comments, Observations and Recommendations ........................................... 8
15 Acronyms, Abbreviations and Initializations................................................................... 10
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16 References............................................................................................................................ 11
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Executive Summary
The Nortel VPN Router v7.05 and Client Workstation v7.11 (hereafter referred to as Nortel
VPN Router), from Nortel Networks, is the Target of Evaluation (TOE) for this Evaluation
Assurance Level (EAL) 4 augmented evaluation.
EWA-Canada is the Common Criteria Evaluation Facility that conducted the evaluation. This
evaluation was completed on 22 July 2008 and was carried out in accordance with the rules
of the Canadian Common Criteria Evaluation and Certification Scheme (CCS).
Nortel VPN Router allows users of a private enterprise network to have secure access to that
network from a remote location. The Router provides firewall, routing, encryption and
decryption, authentication, and data integrity services to ensure that data is securely tunneled
across Internet Protocol (IP) networks including the Internet. The Router can also be
configured to allow two separate portions of an enterprise network to be securely connected
via the Internet. Nortel VPN Router incorporates FIPS 140-2 validated cryptography.
The scope of the evaluation is defined by the security target, which identifies assumptions
made during the evaluation, the intended environment for Nortel VPN Router, the security
requirements, and the level of confidence (evaluation assurance level) at which the product is
intended to satisfy the security requirements. Consumers are advised to verify that their
operating environment is consistent with that specified in the security target, and to give due
consideration to the comments, observations and recommendations in this certification
report.
The results documented in the Evaluation Technical Report (ETR)1
for this product provide
sufficient evidence that it meets the EAL 4 augmented assurance requirements for the
evaluated security functionality. The evaluation was conducted using the Common
Methodology for Information Technology Security Evaluation, Version 2.3 (with applicable
final interpretations), for conformance to the Common Criteria for Information Technology
Security Evaluation, version 2.3. The following augmentation is claimed: ALC_FLR.2 –
Flaw reporting procedures.
Communications Security Establishment Canada, as the CCS Certification Body, declares
that the Nortel VPN Router evaluation meets all the conditions of the Arrangement on the
Recognition of Common Criteria Certificates and that the product will be listed on the CCS
Certified Products list (CPL) and the Common Criteria portal (the official website of the
Common Criteria Project).
1
The ETR is a CCS document that contains information proprietary to the developer and/or the evaluator, and
is not releasable for public review.
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1 Identification of Target of Evaluation
The Target of Evaluation (TOE) for this Evaluation Assurance Level (EAL) 4 augmented
evaluation is the Nortel VPN Router v7.05 and Client Workstation v7.11 (hereafter referred
to as Nortel VPN Router), from Nortel Networks.
2 TOE Description
Nortel VPN Router allows users of a private enterprise network to have secure access to that
network from a remote location. The Router provides firewall, routing, encryption and
decryption, authentication, and data integrity services to ensure that data is securely tunneled
across Internet Protocol (IP) networks including the Internet. The Router can also be
configured to allow two separate portions of an enterprise network to be securely connected
via the Internet.
Nortel VPN Router provides stateful inspection firewall functionality which protects the
private enterprise network from attack by parties on the Internet. The firewall inspects the
packets flowing through the router and uses administrator-configurable rules to determine
whether or not to allow each packet to pass through to its intended destination.
Nortel VPN Router has been evaluated on the hardware appliance models 600, 1010, 1050,
1100, 1750, 2750, and 5000. These models provide identical functionality and differ only in
throughput and performance.
3 Evaluated Security Functionality
The complete list of evaluated security functionality for Nortel VPN Router is identified in
Section 5 of the Security Target (ST).
The following cryptographic modules were evaluated to the FIPS 140-2 standard:
Cryptographic Module Certificate #
VPN Router 1750, 2700, 2750 and 5000 with Hardware
Accelerator
1068
VPN Router 1750, 2700, 2750 and 5000 with VPN Router
Security Accelerator
1073
Nortel VPN Router 600, 1750, 2700, 2750 and 5000 1066
Nortel VPN Router 1010, 1050 and 1100 1067
VPN Client Software 1032
The following Government of Canada approved cryptographic algorithms were evaluated for
correct implementation in Nortel VPN Router:
Cryptographic Algorithm Standard Certificate #
Triple-DES (3DES) FIPS 46-3 641, 642, 644
Advanced Encryption Standard (AES) FIPS 197 718, 719, 721
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Rivest Shamir Adleman (RSA) FIPS 186-2 338, 339
Secure Hash Algorithm (SHA-1) FIPS 180-2 738, 739, 740
Keyed-Hash Message Authentication
Code (HMAC)
FIPS 198 387, 388, 389
4 Security Target
The ST associated with this Certification Report is identified by the following nomenclature:
Title: Nortel Networks VPN Router v7.05 and Client Workstation v7.11 Security Target
Version: Version 3.9
Date: 18 March 2008
5 Common Criteria Conformance
The evaluation was conducted using the Common Methodology for Information Technology
Security Evaluation, Version 2.3, for conformance to the Common Criteria for Information
Technology Security Evaluation, Version 2.3.
Nortel VPN Router is:
a. Common Criteria Part 2 conformant, with security functional requirements based only
upon functional components in Part 2;
b. Common Criteria Part 3 conformant, with security assurance requirements based only
upon assurance components in Part 3; and
c. Common Criteria EAL 4 augmented, containing all the security assurance requirements
in the EAL 4 package, as well as the following: ALC_FLR.2 Flaw reporting
procedures.
6 Security Policy
Nortel VPN Router implements the following Security Policies:
• Access Control, that controls administrator access to configuration parameters;
• VPN Information Flow Control, that controls encrypted information flow; and
• Firewall Information Flow Control, that controls firewall information flow.
In addition, Nortel VPN Router implements security policies pertaining to security audit,
cryptographic support, identification and authentication, security management, protection of
TOE security functions, and trusted path/channels. Further details on these security policies
are found in Section 5 of the ST.
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7 Assumptions and Clarification of Scope
Consumers of Nortel VPN Router should consider assumptions about usage and
environmental settings as requirements for the product’s installation and its operating
environment. This will ensure the proper and secure operation of Nortel VPN Router.
7.1 Secure Usage Assumptions
The following Secure Usage assumptions are listed in the ST:
• It is assumed that administrators will be trained in the secure use of the TOE and will
follow the policies and procedures defined in the TOE documentation for secure
administration of the TOE. Administrators are assumed to be non-hostile.
7.2 Environmental Assumptions
The following Environmental Assumptions are listed in the ST:
• It is assumed that the TOE relies on the operating environment of TOE to provide
accurate clock time in order to create an accurate time stamp for audit events.
• It is assumed that the TOE will be housed within a physically secure environment.
• It is assumed that the environment will provide the necessary infrastructure to ensure
that certificates can be validated when digital certificates are used for authentication. It
is assumed that the appropriate infrastructure is properly maintained in order to ensure
the accuracy and security of the certificates (e.g., certificates are revoked in a timely
manner).
• It is assumed that the TOE has access to all of the Information Technology (IT)
System data it needs to perform its functions.
7.3 Clarification of Scope
The TOE is intended for use by non-hostile and well trained network administrators that have
followed the installation and configuration guidance provided in: Nortel Networks Virtual
Private Network Router v7.05 Supplement Guide; and Nortel VPN Router Configuration –
FIPS 140-2.
8 Architectural Information
Nortel VPN Router comprises the Router component and the Client component.
The Router component is firmware that runs on the purpose built FIPS 140-2 validated
hardware appliance models 600, 1010, 1050, 1100, 1750, 2750, and 5000. The Router
comprises the subsystems:
• Administrator interface;
• Database;
• Control;
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• Context; and
• Servicing.
The Client component is software that runs on a remote user’s general purpose workstation.
The Client comprises the subsystems:
• VPN Interface;
• User Interface; and
• VPN Client.
Further details about the Nortel VPN Router architecture are proprietary to the vendor, and
are not provided in this report.
9 Evaluated Configuration
The ST defines the Router component as Nortel VPN Router v7.05 build 100 that runs on the
FIPS 140-2 validated hardware appliance models 600, 1010, 1050, 1100, 1750, 2750, and
5000. The Client component is defined as Nortel VPN Client Workstation v7.11 build 100
that runs on Microsoft Windows 2000 SP4 and XP SP2 (32 bit).
Nortel VPN Router must be running in FIPS mode. This is specified in the Nortel Networks
Virtual Private Network Router v7.05 Supplement Guide.
10 Documentation
The significant Nortel Networks documents provided to the consumer are as follows:
a. Nortel VPN Router Installation;
b. Nortel VPN Router Configuration – FIPS 140-2;
c. Using Contivity Secure IP Services Gateways in FIPS mode;
d. Nortel Networks Virtual Private Network Router v7.05 Supplement Guide;
e. Nortel VPN Router Configuration – Firewalls, Filters, NAT, and QoS;
f. Nortel VPN Router Configuration – Tunneling Protocols;
g. Configuring Basic Features for the Contivity Secure IP Services Gateway; and
h. Configuring Advanced Features for the Contivity Secure IP Services Gateway.
11 Evaluation Analysis Activities
The evaluation analysis activities involved a structured evaluation of Nortel VPN Router,
including the following areas:
Configuration management: An analysis of the Nortel VPN Router configuration
management system and associated documentation was performed. The evaluators found that
Nortel VPN Router configuration items were clearly marked, and could be modified and
controlled. The developer’s configuration management system was observed during a site
visit, and it was found to be mature and well developed.
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Secure delivery and operation: The evaluators examined the delivery documentation and
determined that it described all of the procedures required to maintain the integrity of Nortel
VPN Router during distribution to the consumer. The evaluators examined and tested the
installation, generation and start-up procedures, and determined that they were complete and
sufficiently detailed to result in a secure configuration.
Design documentation: The evaluators analysed the Nortel VPN Router functional
specification, high-level design, low-level design, security policy model, and a subset of the
implementation representation; they determined that the documents were internally
consistent, and completely and accurately instantiated all interfaces and security functions.
The evaluators also independently verified that the correspondence mappings between the
design documents were correct.
Guidance documents: The evaluators examined the Nortel VPN Router user and
administrator guidance documentation and determined that it sufficiently and unambiguously
described how to securely use and administer the product, and that it was consistent with the
other documents supplied for evaluation.
Life-cycle support: The evaluators examined the development security procedures during a
site visit and determined that they detailed sufficient security measures for the development
environment to protect the confidentiality and integrity of the Nortel VPN Router design and
implementation. The evaluators determined that the developer has used a documented model
of the TOE life-cycle and well-defined development tools that yield consistent and
predictable results.
The evaluators reviewed the flaw remediation procedures used by Nortel Networks for the
Nortel VPN Router. During a site visit, the evaluators also examined the evidence generated
by adherence to the procedures. The evaluators concluded that the procedures are adequate to
track and correct security flaws, and distribute the flaw information and corrections to
consumers of the product.
Vulnerability assessment: The Nortel VPN Router ST’s strength of function claims were
validated through independent evaluator analysis. The evaluators examined the developer’s
vulnerability analysis for Nortel VPN Router and found that it sufficiently described each of
the potential vulnerabilities along with a sound rationale as to why it was not exploitable in
the intended environment. Additionally, the evaluators conducted an independent review of
public domain vulnerability databases, and all evaluation deliverables to provide assurance
that the developer has considered all potential vulnerabilities.
All these evaluation activities resulted in PASS verdicts.
12 ITS Product Testing
Testing consists of the following three steps: assessing developer tests, performing
independent functional tests, and performing penetration tests.
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12.1 Assessing Developer Tests
The evaluators verified that the developer has met their testing responsibilities by examining
their test evidence, and reviewing their test results, as documented in the ETR2
.
Nortel Networks employs a rigorous testing process that tests the changes and fixes in each
release of Nortel VPN Router. Comprehensive regression testing is conducted for a General
Availability targeted release.
The evaluators analyzed the developer’s test coverage analysis and found it to be complete
and accurate. The correspondence between the tests identified in the developer’s test
documentation and the functional specification was complete.
12.2 Independent Functional Testing
During this evaluation, the evaluator developed independent functional tests by examining
design and guidance documentation, examining the developer's test documentation,
executing a sample of the developer's test cases, and creating test cases that augmented the
developer tests.
All testing was planned and documented to a sufficient level of detail to allow repeatability
of the testing procedures and results. Resulting from this test coverage approach was the
following list of EWA-Canada test goals:
a. Initialization: The objective of this test goal is to provide the procedures for determining
the system configuration in order to ensure that the TOE that is tested is correct;
b. Repeat of Developer's Tests: The objective of this test goal is to repeat a subset of the
developer's tests;
c. Firewall: The objective of this test goal is to ensure that the network segregation, flow
control, and protection requirements have been met with the Firewall functionality;
d. Data Protection: The objective of this test goal is to determine the TOE's VPN
capability for protecting its data; and
e. Basic Product Functionality: The objective of this test goal is to exercise the TOE's
functionality to ensure that the security claims may not be inadvertently compromised.
12.3 Independent Penetration Testing
Subsequent to the examination of the developer's vulnerability analysis, independent
vulnerability analysis, and the independent review of public domain vulnerability databases
and all evaluation deliverables, limited independent evaluator penetration testing was
conducted. The penetration tests focused on:
2
The ETR is a CCS document that contains information proprietary to the developer and/or the evaluator, and
is not releasable for public review.
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• Generic vulnerabilities;
• Bypassing;
• Tampering; and
• Direct attacks.
Vulnerability sites were searched for vulnerabilities. Testing included scanning for generic
weaknesses, monitoring network traffic during start up and operation for information leakage
and carrying out basic protocol attacks.
The independent penetration testing, and subsequent ad-hoc testing, did not uncover any
exploitable vulnerabilities in the anticipated operating environment.
12.4 Conduct of Testing
Nortel VPN Router was subjected to a comprehensive suite of formally documented,
independent functional and penetration tests. The testing took place at the Information
Technology Security Evaluation and Test (ITSET) Facility at EWA-Canada. The CCS
Certification Body witnessed a portion of the independent testing. The detailed testing
activities, including configurations, procedures, test cases, expected results and observed
results are documented in a separate Test Results document.
12.5 Testing Results
The developer’s tests and the independent functional tests yielded the expected results,
giving assurance that Nortel VPN Router behaves as specified in its ST and functional
specification.
13 Results of the Evaluation
This evaluation has provided the basis for an EAL 4+ level of assurance. The overall verdict
for the evaluation is PASS. These results are supported by evidence in the ETR.
14 Evaluator Comments, Observations and Recommendations
The complete documentation for Nortel VPN Router includes a comprehensive Installation,
Configuration and Security Guide.
The Nortel VPN Router is straightforward to configure, use and integrate into a corporate
network. The Web GUI is intuitive and provides the administrator with a one stop tool for
management.
Nortel Networks Configuration Management (CM) and Quality Assurance (QA) provide the
requisite controls for managing all CM/QA activities.
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EWA-Canada performed a site visit to review the developer’s processes, product life-cycle
and site security, and to repeat a sample of the developer’s tests. The evaluator found the
company was well established and practising sound and documented processes in order to
develop their products. Nortel Networks demonstrated a strong commitment to the Common
Criteria evaluation and its completion.
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15 Acronyms, Abbreviations and Initializations
Acronym/Abbreviation/
Initialization
Description
3DES Triple - Data Encryption Standard
AES Advanced Encryption Standard
CC Common Criteria
CCEF Common Criteria Evaluation Facility
CCS Canadian Common Criteria Evaluation
and Certification Scheme
CPL Certified Products list
CM Configuration Management
EAL Evaluation Assurance Level
ETR Evaluation Technical Report
FIPS Federal Information Processing Standard
GUI Graphical User Interface
HMAC Hashed Message Authentication Code
IP Internet Protocol
IPSec IP Security
IT Information Technology
ITSET Information Technology Security
Evaluation and Testing
OS Operating System
PALCAN Program for the Accreditation of
Laboratories Canada
QA Quality Assurance
RSA The algorithm was publicly described in 1977 by Ron
Rivest, Adi Shamir, and Leonard Adleman at MIT; the
letters RSA are the initials of their surnames.
SANS SysAdmin, Audit, Network, Security
SFP Security Function Policy
SHA-1 Secure Hash Algorithm
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Acronym/Abbreviation/
Initialization
Description
ST Security Target
TOE Target of Evaluation
TSF TOE Security Function
US-CERT United States Computer Emergency
Readiness Team
VPN Virtual Private Network
16 References
This section lists all documentation used as source material for this report:
a. Canadian Common Criteria Evaluation and Certification Scheme (CCS) and CCS
Publication #4, Technical Oversight, Version 1.0.
b. Common Criteria for Information Technology Security Evaluation, Version 2.3, August
2005.
c. Common Methodology for Information Technology Security Evaluation, CEM,
Version 2.3, August 2005.
d. Nortel Networks VPN Router v7.05 and Client Workstation v7.11 Security Target,
Version 3.9, 18 March 2008.
e. Evaluation Technical Report for Common Criteria EAL 4+ Evaluation of Nortel VPN
Router v7.05 and Client Workstation v7.11 Document No. 1548-000-D002, Version
1.4, 22 July 2008.