Table of ContentsRelease Notes for Cisco Secure Access Control Server for Windows 2000/NT Servers Version 3.0.3
Changes to CRYPTOCard Support
Limitations and Restrictions
Tested Certificate Servers
Tested Web Browser Versions
Tested Token Servers
Tested LDAP Server
Tested Novell NDS and Novell Clients
Tested Windows 2000 Service Packs
Tested Platforms for CiscoSecure Authentication Agent
Cisco VPN 3000 Concentrator
Cisco VPN 5000 Concentrator
Cisco Aironet Access Point
Cisco Catalyst Switches
Open Caveats—Version 3.0.3
Obtaining Technical Assistance
Cisco Secure ACS provides authentication, authorization, and accounting (AAA—pronounced "triple A") services to network devices that function as AAA clients, such as a network access server, PIX Firewall, or router. A AAA client is any such device that provides AAA client functionality and uses one of the AAA protocols supported by Cisco Secure ACS.
Cisco Secure ACS helps centralize access control and accounting, in addition to router and switch access management. With Cisco Secure ACS, network administrators can quickly administer accounts and globally change levels of service offerings for entire groups of users. Although using an external user database is optional, Cisco Secure ACS supports many popular user databases, enabling companies to use the knowledge gained from and the investment already made in building their corporate user databases.
Cisco Secure ACS supports Cisco AAA clients such as the Cisco 2509, 2511, 3620, 3640, AS5200 and AS5300, AS5800, the Cisco PIX Firewall, Cisco Aironet Access Point wireless networking devices, Cisco VPN 3000-series Concentrators, and Cisco VPN 5000-series Concentrators. It also supports third-party devices that can be configured with Terminal Access Controller Access Control System (TACACS+) or Remote Access Dial-In User Service (RADIUS) protocols. Cisco Secure ACS treats all such devices as AAA clients. Cisco Secure ACS uses the TACACS+ and RADIUS protocols to provide AAA services that ensure a secure environment. For more information about support for TACACS+ and RADIUS in Cisco Secure ACS, see the Cisco Secure ACS for Windows 2000/NT Servers User Guide.
- 802.1x Support—Cisco Secure ACS support for 802.1x strengthens access control for switched LAN and wireless LAN users. 802.1x is a new access control standard proposed by the IEEE for managing port-level access control. 802.1x relies on Extensible Authentication Protocol (EAP), carried in RADIUS messages, to manage user authentication and authorization.
- EAP-MD5, EAP-TLS—In addition to supporting LEAP, Cisco Secure ACS supports EAP-MD5 and EAP-TLS authentication. EAP is an IETF RFC standard for carrying various authentication methods over any PPP connection. EAP-MD5 is a username and password method incorporating MD5 hashing for security. EAP-TLS is a method for authenticating both Cisco Secure ACS and users with X.509 digital certificates. This method also provides dynamic session key negotiation.
- Command Authorization Sets—Command authorization sets provide a centralized mechanism to manage TACACS+ administrative control. Driven by some of the largest enterprise and service provider networks that use Cisco Secure ACS, command authorization sets provide a method to group and name device command profiles that can be paired with users, groups of users, or network device groups. A key benefit of command authorization sets is the ability to remove any requirement of individual privilege level or command restrictions on each AAA client. This feature greatly enhances the scalability and manageability of setting device command authorization restrictions for network administrators.
- MS CHAP version 2 Support and MS CHAP Password Aging Support—Cisco Secure ACS supports MS CHAP version 2. In addition, we added an MS CHAP-based password-aging feature which works with the Microsoft Dial-Up Networking client, the Cisco VPN client (version 3.0 or greater), and any desktop client that supports MS CHAP. This feature prompts a user to change his or her password after a login where the user password has expired. The MS CHAP-based password-aging feature supports users who authenticate with a Windows user database and is offered in addition to password aging supported by the CiscoSecure user database.
|Note Cisco VPN 3000-series Concentrators and Cisco IOS will support MS CHAP password aging in upcoming releases.|
- Per-User Access Control Lists (ACLs)—This feature allows administrators to define ACLs of any length for users or groups of users.
- Shared Network Access Restrictions (NARs)—The ability to name NARs simplifies the assignment of identical NARs to multiple users or groups of users.
- Wildcards in NARs—Cisco Secure ACS supports wildcards for designating end-user client IP addresses and ports in IP-based NARs. In CLI/DNIS-based NARs, Cisco Secure ACS supports wildcards for CLI and DNIS values. You can apply NARs to a single AAA client, a network device group, or all AAA clients. Wildcarding of AAA clients is supported by using the multiple devices per AAA client feature, described next.
- Multiple Devices per AAA Client Configuration—You can create single AAA client configurations that define a set of network devices that use the same shared key, authentication method, and logging/accounting parameters. Cisco Secure ACS enables you to provide multiple IP addresses, including the use of wildcards in IP addresses, when you configure a AAA client in the HTML interface.
- Multiple LDAP Lookups and LDAP Failover—Cisco Secure ACS enables you to create multiple LDAP external user database configurations. You can also define backup LDAP servers for use if a primary LDAP server is not available.
- User-Defined RADIUS Vendor-Specific Attributes (VSAs)—Cisco Secure ACS now supports user-defined inbound and outbound RADIUS VSAs.
- Improved User Documentation—We reorganized and heavily revised the online documentation and Cisco Secure ACS for Windows 2000/NT Servers Version 3.0 User Guide. We rewrote and expanded Installing Cisco Secure ACS 3.0 for Windows 2000/NT Servers. We heavily revised Web Server Installation for Cisco Secure ACS 3.0 for Windows 2000/NT User-Changeable Passwords.
Before Cisco Secure ACS 3.0.1, support for CRYPTOCard token servers used the vendor-proprietary interface provided with the CRYPTOCard token server. Beginning with Cisco Secure ACS 3.0.1, we support CRYPTOCard token servers using a standard RADIUS interface.
If you upgrade to Cisco Secure ACS 3.0 and had configured CRYPTOCard authentication in the previous installation of Cisco Secure ACS, the installation program prompts you for information about the CRYPTOCard RADIUS server. With this information, the installation program replaces the older CRYPTOCard configuration with a new one that uses the RADIUS interface of the CRYTPOCard easyRADIUS server. To use the RADIUS interface of the CRYPTOCard server, be sure the CRYPTOCard easyRADIUS server is installed on a CRYPTOCard Windows server. For more information about CRYPTOCard easyRADIUS, see CRYPTOCard documentation.
We successfully tested running Cisco Secure ACS and the CRYPTOCard easyRADIUS server on the same Windows server. Testing occurred on Windows NT 4.0 with Service Pack 6 and Windows 2000 with Service Pack 2. We used CRYPTOCard easyRADIUS server versions 5.0 and 5.1. However, we recommend that you do not run the CRYPTOCard easyRADIUS server on the same Windows server that runs Cisco Secure ACS. If you choose to do so, be sure that Cisco Secure ACS and CRYPTOCard easyRADIUS use different ports to receive RADIUS requests.
You can change the UDP ports used by the CRYPTOCard RADIUS server by editing its services file, usually located in c:\WINNT\system32\drivers\etc. For more information about the UDP ports used by the CRYPTOCard RADIUS server and how to change them, see your CRYPTOCard documentation.
The evaluation version of Cisco Secure ACS 3.0 provides full functionality for 90 days after the date of installation. This allows you to use all features of Cisco Secure ACS 3.0 while determining if it meets your needs. The evaluation version of Cisco Secure ACS 3.0 will be available 30 days after the release of the commercial version of Cisco Secure ACS 3.0.
When the evaluation period has elapsed, the CSRadius and CSTacacs services fail to start. You will receive a message upon accessing the administrative interface notifying you that your evaluation period has elapsed.
Please contact your Cisco Sales Representative(s) to inquire about purchasing the commercial version of Cisco Secure ACS. To purchase the commercial version of Cisco Secure ACS 3.0 online, use Part Number CSACS-3.0 at the following URL:
After purchasing a commercial version of Cisco Secure ACS 3.0, you can upgrade your Cisco Secure ACS server from the evaluation version to the commercial version by installing the commercial version over the evaluation version. For information on installing Cisco Secure ACS 3.0, follow the instructions in Installing Cisco Secure ACS 3.0 for Windows 2000/NT Servers.
Cisco Secure ACS has not been interoperability tested with other Cisco software. Other than for the software and operating system versions listed in this document, we performed no interoperability testing. Using untested software with Cisco Secure ACS may cause undesired results. For the best performance of Cisco Secure ACS, we recommend that you use the versions of software and operating systems listed in this document.
Because we made no changes to token support, we did not conduct token server testing with Cisco Secure ACS version 3.0.3. We tested Cisco Secure ACS version 3.0.2 with the following token server software:
- PassGo (formerly AXENT) Defender version 4.1.3
- Secure Computing SafeWord version 5.2
- RSA ACE/Server version 5.0 and ACE/Client version 1.1.2 for Windows 2000
- ActivCard Server 3.1
- Vasco Vacman Server 6.0.2
|Note Cisco Secure ACS 3.0.2 supports CRYPTOCard, ActivCard, and Vasco token servers using RADIUS.|
For information about CRYPTOCard support, see "Changes to CRYPTOCard Support," .
- We used Netware 6.0 to test Novell NDS external user databases.
- We tested Cisco Secure ACS 3.0.2 with the Novell Requestor software found in Novell Client version 4.8.3 for Windows NT/2000. To authenticate users with a Novell NDS external user database, the Novell Requestor software must be installed on the Windows server that runs Cisco Secure ACS.
|Note Cisco Secure ACS only supports English language versions of Windows and its Service Packs.|
Because we made no changes to CiscoSecure Authentication Agent support, we did not conduct CiscoSecure Authentication Agent testing with Cisco Secure ACS version 3.0.3. With Cisco Secure ACS 3.0.2, we tested CiscoSecure Authentication Agent on the following client platform operating systems:
|Note Caveats are printed word-for-word as they appear in our caveat tracking system.|
- CSCdw79587: Bad TACACS+ Authorization packets cause CSLOG to spin
- CSCdy50194: Restart condition for CSMon
- CSCdy65011: CSauth lockup during replication
- CSCdy83340: enhancement request:CSDBsync -r should restore more info
- CSCdy83399: Cannot restore 3.0(1) backup into 3.0(2)
- CSCdz44076: CSRadius preventing wlan APs failing over
|Note Caveats are printed word-for-word as they appear in our bug tracking system.|
Workaround/Solution: Cisco Secure ACS does not support this style of user name when authenticating against an external Windows 2000 server. Continue to prefix account names with the NT 4.0-style domain name.
- Dial-up clients only need to be able to connect to your network if you intend to support dial-up access. If not, this is not a requirement for installing Cisco Secure ACS.
- Only Cisco IOS devices need to be running Cisco IOS release 11.1 or later. Other devices, such as supported versions of the Cisco Aironet Access Point, do not need to be running Cisco IOS.
- The supported web browsers must also have a Java virtual machine installed in order to support the Cisco Secure ACS administration interface.
- CSCds90678: Failed to Edit TACACS+ (Cisco IOS) configuration
Failed to Edit TACACS+ (Cisco IOS)
A PPTP tunnel using a Cisco VPN 3000-series concentrator and MS-CHAP version 2 fails. The VPN concentrator indicates that authentication passed; however, tunnel establishment fails. When using the MS-CHAP version 1 method with the same configuration, tunnel establishment succeeds. When using the concentrator's internal user database with MS-CHAP version 2, tunnel establishment succeeds.
Setup two users at least on Cisco Secure ACS, one as a tunnel user and the others as the authenticated users. The tunnel user and its password should be the same as the tunnel group name on the concentrator and its password.
- In "IETF RADIUS Attributes" check the " Class" attribute and the following value should be entered in the text box: "ou=groupname;" where groupname is the name of the tunnel user name previously configured.
- In "Microsoft RADIUS Attributes", select the "[311\012] MS-CHAP-MPPE-Keys" check box.
- Add a group name similar to the tunnel users name, and in the "Cisco VPN 3000 Concentrator RADIUS Attributes" select the [3076\011] CVPN3000-Tunneling-Protocols check box and the [3076\020] CVPN3000-PPTP-Encryption check box.
- Select the [3076\011] CVPN3000-Tunneling-Protocols check box, then select PPTP from the corresponding list.
- Select the [3076\020] CVPN3000-PPTP-Encryption check box, then select 128-bit or lower from the corresponding list, according to the client encryption capability
During installation, if you use an IP address of 10.0.10.255 with a 23-bit subnet mask (255.254.0.0), the installation fails with an error message indicating that you cannot use a broadcast IP address.
Workaround/Solution: On the Cisco Secure ACS server, configure all Cisco Secure ACS services to run using a domain administrator account for the domain of which the server is a member. For more information about additional configuration required to run Cisco Secure ACS 3.0 on a Windows NT 4.0 member server, see Installing Cisco Secure ACS 3.0 for Windows 2000/NT Servers.
If you use Netscape Navigator v.4.7 to access the HTML interface, adding an administrator to Cisco Secure ACS can cause 100% CPU utilization for over a minute. This in turn can cause the CSRadius service to pause until the browser resumes normal operation. The fault lies in the Netscape browser rather than Cisco Secure ACS.
Workaround/Solution: Once the 100% CPU utilization has begun, wait until browser operation returns to normal. This should be less than five minutes. To avoid the behavior altogether, use a tested version of Microsoft Internet Explorer. See the Tested Web Browsers section of the Release Notes for Cisco Secure Access Control Server for Windows 2000/NT Servers
When a Novell NDS database configuration in Cisco Secure ACS has a context list greater than 4095 characters long, editing the NDS configuration page results in incorrect HTMLin the browser interface.
Workaround/Solution: After renaming a user-defined attribute, restart all Cisco Secure ACS services from the Windows Control Panel. Once the services have been restarted, the CSV RADIUS Accounting configuration screen shows the renamed attributes and remembers their selection when the page is submitted.
Changes to user-defined fields in user records do not appear to replicate. After the user-defined fields are changed in the Interface Configuration section on the primary Cisco Secure ACS server and replication succeeds, the secondary Cisco Secure ACS server does not display the changes to the user-defined fields in the HTML interface.
Changes to HTTP Port Allocation settings do not appear to replicate. After the HTTP Port Allocation settings are changed on the Access Policy Setup page in the Administration Control section on the primary Cisco Secure ACS server and replication succeeds, the secondary Cisco Secure ACS server does not display the changes to the HTTP Port Allocation settings in the HTML interface.
In the System Configuration section, settings made on the VoIP Account Configuration page are not restored from backup. Neither are these settings preserved during reinstallation of Cisco Secure ACS 3.0 or upgrading to a later build of Cisco Secure ACS 3.0.
Customer is experiencing problems adding the user fields (3,4,5) to the RADIUS accounting file. When he renames these fields in the User Attributes in Interface Configuration, and then attempts to add them to the RADIUS Accounting log, the changes do not appear in the log.
An AAA server cannot be deleted from the "(Not Assigned) AAA Servers" table if the "Synchronize" table in the "Synchronization Partners" is empty. An error message "x.x.x.x can not be deleted since it is an synchronization partner" is displayed.
Changes to the order of the Replication Partners, under Database Replication is not saved when submitting changes. When you get into the Database Replication window, the servers are shown in alphabetical order and not in the order desired. The database replication is also done in alphabetical order, so in the order shown by the GUI after submitting changes.
Authentication services CSRadius and CSTacacs might crash when ACS 18.104.22.168 is installed on windows 2000 with service pack 1 and when safeword is used on a separate unix box. All users are safeword users.
This is correct behavior. The <Default> NDG corresponds to the "Not Assigned" NDG in Network Configuration. If the AAA client on which the user is attempting to issue commands is not in the "Not Assigned" NDG and there is no command authorization set that does apply to the AAA client, Cisco Secure ACS denies authorization for the command.
Workaround/Solution: If you intend to apply a command authorization set to all AAA clients, assign it once per every NDG rather than solely to the <Default> NDG. There is currently no single option that applies a command authorization set to all NDGs.
Cisco Secure ACS accepts empty and therefore invalid PIX ACLs. There are two ways this can occur. In the first, you can submit only a space in the PIX ACL. In the second, you can delete the contents of a previously submitted, valid PIX ACL and resubmit it successfully.
Cisco Secure ACS 2.6.4, 3.0.2, and 3.1.1 all log an incorrect value in TACACS+ Accounting for the "disc-cause" attribute. If you set up a PPP session to do an idle timeout, when it disconnects you will get "CLID-Authentication-Failure" in the TACACS+ Accounting log for "disc-cause" - but the TACACS+ documentation for IOS says that the value "4" is Idle timeout.
While upgrading from Cisco Secure ACS 22.214.171.124 to 3.0.3, if you cancel the upgrade at the dialog box that presents the options to keep or delete the existing database and then continue the upgrade by clicking Resume, you receive an error message for each Cisco Secure ACS service that the service cannot be found. Upgrade cannot be resumed.
Workaround/Solution: Use the clean.exe application for 3.0.3 to remove Cisco Secure ACS, reinstall 3.0, restore Cisco Secure ACS configuration from the most recent backup file, and upgrade again without attempting to cancel the upgrade.
If you attempt to upgrade to Cisco Secure ACS 3.0.3 from 126.96.36.199 and abort installation of 3.0.3 before it is complete, using the clean.exe application that comes with 188.8.131.52 does not remove all related file system directories or registry keys.
Occasionally updated components are not replicated to the third replication partner in a replication cascade. This happens because replication pre-checks on the second partner indicate incorrectly that outbound replication is not required for the third partner in the cascade. This occurs because the pre-checks performed by the second replication partner happen before replication is completed from the first replication partner.
This behavior occurs after upgrading Cisco Secure ACS from 184.108.40.206 to 3.0.3 and when Cisco Secure ACS is running on a member server. Users whose accounts reside in a Windows 2000 user database and whose accounts are configured to enforce a password change at next login are disconnected after providing the new password.
EAP-TLS Authentication fails after successful Restore process. Seems that the problem is related to Private Keys decryption failing after restore. The following error is presented in CSAuth log after a successful restore process:
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