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Table Of Contents
Release Notes for Cisco
VPN 3000 Series Concentrator, Release 4.0.4VPN 3005 Concentrator Enhancement
Hardware Acceleration for Advanced Encryption Standard (AES)
Native Kerberos Authentication
Alerts (Delete with Reason Notifications)
Configurable giaddr for Group-Based DHCP
Memory Conservation Enhancements
Memory Statistics Display Enhancements
Enhanced Sygate Firewall AYT Support
Enhanced PING Command Features
LDAP Authorization Authenticated Bind (Login DN) Support
Disable Group Lock When Using SDI or NT Domain Authentication
Password Expiry Does Not Change User Profile for LAN
Browser Interoperability Issues
VPN Client Used with Zone Labs Integrity Agent Uses Port 5054
Administer Sessions Screen Shows Data for Wrong Group
Long Initialization for SNMP Traps in Releases 3.0, 3.5, and 3.5.1
Accessing Online Glossary Requires Connection to Cisco.com
SNMP Traps VRRP Notifications and cipSecMIBNotifications Are Not Supported
RSA Allows a CA to Issue Only One Certificate with any DN
Reauthentication on Rekey Interval
VPN 3000 Concentrator Ignores RADIUS Packets Longer Than 4096 Bytes
VPN Client Supports Elevated Privileges Using the MSI Installer
Change to Network List Creation for LAN-to-LAN Configuration
Open Caveats for VPN 3000 Series Concentrator
Caveats Resolved in Release 4.0.4
Caveat Resolved in Release 4.0.3
Caveats Resolved in Release 4.0.2
Caveats Resolved in Release 4.0.1
Caveat Resolved in Release 4.0
VPN 3000 Concentrator Documentation Updates
Software Configuration Tips on the Cisco TAC Home Page
Obtaining Technical Assistance
Obtaining Additional Publications and Information
Release Notes for Cisco
VPN 3000 Series Concentrator, Release 4.0.4
CCO Date: December 5, 2003
Part Number 78-15719-02
Introduction
Note
You can find the most current documentation for released Cisco VPN 3000 products at http://www.cisco.com or http://cco.cisco.com. These electronic documents might contain updates and changes made after the hard-copy documents were printed.
These release notes are for Cisco VPN 3000 Series Concentrator Release 4.0 through Release 4.0.4 software. These release notes describe new features, limitations and restrictions, interoperability notes, and related documentation. They also list issues you should be aware of and the procedures you should follow before loading this release. The section, "Usage Notes," describes interoperability considerations and other issues you should be aware of when installing and using the VPN 3000 Series Concentrator. Read these release notes carefully prior to installing this release.
Contents
These release notes describe the following topics:
Open Caveats for VPN 3000 Series Concentrator
Caveats Resolved in Release 4.0.4
Caveat Resolved in Release 4.0.3
Caveats Resolved in Release 4.0.2
Caveats Resolved in Release 4.0.1
Caveat Resolved in Release 4.0
Obtaining Technical Assistance
System Requirements
This section describes the system requirements for Release 4.0.
Hardware Supported
Cisco VPN 3000 Series Concentrator software Release 4.0 supports the following hardware platforms:
•
•
Platform Files
Release 4.0 contains two binary files, one for each of two platforms:
•
•
Caution
Upgrading to Release 4.0
This section contains information about upgrading from earlier releases to Release 4.0.
When upgrading VPN 3000 Concentrator releases, you must clear the cache in your browser to ensure that all new screens display correctly when you are managing the VPN Concentrator.
Note
Upgrading to a new version of the VPN 3000 Concentrator software does not automatically overwrite the existing configuration file. Configuration options for new features (for example, IKE proposals) are not automatically saved to the configuration file on an upgrade. The HTML Manager displays "Save Needed" (rather than "Save") to indicate that the configuration needs to be saved. If the configuration is not saved, then on the next reboot, the new configuration options are added again. If you need to send the configuration file to the TAC, save the running configuration to the configuration file first.
Before You Begin
Before you upgrade to this release, back up your existing configuration to the flash and to an external server. This ensures that you can return to the previous configuration and software if you need to.
Be aware of the following considerations before you upgrade. These are known product behaviors, and your knowing about them at the beginning of the process should expedite your product upgrade experience. Where appropriate, the number of the caveat documenting the issue appears at the end of the item. See Open Caveats for VPN 3000 Series Concentrator for a description of using this number to locate a particular caveat.
Release 4.0 of the VPN 3000 Concentrator software contains several features that interact with corresponding features in the Release 3.6.x and 4.0.x versions of the VPN Client and VPN 3002 Hardware Client software. To get the full benefit of this release you should upgrade your client software to one of these versions.
Note
The VPN 3000 Concentrator software, Release 4.0, does operate with VPN Client and VPN 3002 Hardware Client versions 3.0 and higher, but you should upgrade these, too, to take full advantage of the new features.
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•
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Use the following backup procedure to ensure that you have a ready backup configuration.
Backing Up the Existing Configuration to the Flash
1.
2.
3.
You have now backed up the existing configuration to the flash.
Backing Up the Existing Configuration to an External Server
You should also back up the configuration to a server. You can do this in many ways, one of which is to download the file using your Web Browser from the HTML interface (VPN Manager).
You can now upgrade the software with assurance that you can return to your previous firmware using your previous configuration.
Note
Downgrading from Release 4.0
If you need to return to a release prior to Release 4.0, do the following:
Step 1
Step 2
Step 3
Step 4
Step 5
Your prior firmware and image are restored.
New Feature in Release 4.0.4
Release 4.0.4 introduces the following feature.
VPN 3005 Concentrator Enhancement
Beginning with Release 4.04, the VPN 3005 Concentrator with 64 MB memory supports up to 200 simultaneous remote access IPSec sessions.
To achieve this number, VPN Client must either:
•
•
VPN 3002 Hardware Client must refrain from split tunneling.
Note
New Features in Release 4.0
This section describes the new features in Release 4.0 of the VPN 3000 Series Concentrator. For detailed instructions about how to configure and use these features, see VPN 3000 Series Concentrator Reference Volume I: Configuration and VPN 3000 Series Concentrator Reference Volume II: Administration and Management.
Hardware Acceleration for Advanced Encryption Standard (AES)
VPN 3000 Concentrator models 3015 and higher now offer an enhanced, scalable encryption processor (SEP-E), that provides hardware support for AES (software support was added in Release 3.6). This feature has no configuration implications. For installation information about the new SEP-E modules, see Installing SEP or SEP-E Modules in the VPN 3000 Series Concentrator.
Note
512 MB On-Board Memory
You can now upgrade your VPN 3060 or 3080 Concentrator memory to 512 MB.
Note
If your VPN 3000 Concentrator is running low on memory resources, upgrading to 512 MB will help. Symptoms that indicate low memory include the following:
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•
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To determine the amount of memory currently installed in your VPN Concentrator, use the Monitoring | Status screen. For information about installing memory upgrades and about updating the VPN Concentrator Manager and the VPN Concentrator Bootcode, see Upgrading Memory to 512 MB in the VPN 3000 Series Concentrator, included with your memory upgrade kit.
Note
RADIUS User Filters
With Release 4.0, administrators can define remote access user filters in Cisco Secure ACS as download PIX ACLs or as a Cisco vendor-specific RADIUS attribute AV-PAIR (26/9/1), rather than having to define them on each VPN Concentrator. This feature provides limited support for to download inbound access control lists or filters and apply them to a user or group, rather than defining the filters on the VPN Concentrator.
A network administrator can configure the filters on a RADIUS server, rather than on the VPN Concentrator. To provide information about the filter and filter rules, the VPN Concentrator's management system includes a new screen in the monitoring and administration sessions.
Backup LAN-to-LAN
The Backup LAN-to-LAN feature lets you establish redundancy for your LAN-to-LAN connection. Unlike VRRP, which provides a failover for the VPN Concentrator, Backup LAN-to-LAN provides a failover for the connection itself. Although VRRP and Backup LAN-to-LAN are both ways of establishing continuity of service should a VPN Concentrator fail, Backup LAN-to-LAN provides certain advantages that VRRP does not.
•
•
Note
Native Kerberos Authentication
Release 4.0 supports authentication to Kerberos/Active directory, which is the default authentication mechanism in Windows 2000 and Windows XP. Kerberos is an authentication protocol for use on untrusted networks. The protocol comprises two stages of authentication--the first level is to a key distribution center (KDC), and the second level is between each client and server.
To configure this feature, an administrator must add a Kerberos authentication server on a group basis or add the server to the global authentication servers list and configure such parameters as server IP address, server port, number of retries, and so on. The IPSec group tab includes Kerberos as an authentication type, and statistical displays also include Kerberos authentication statistics.
See the Open Caveats section for information about configuration issues with Active Directory (CSCdz62206) and Linux/UNIX (CSCea20236).
LDAP/RADIUS Authorization
This feature separates user authorization (permissions) from user authentication. It lets certificate users receive permissions by means of LDAP or RADIUS without secondary authentication via XAUTH. It also lets non-certificate users using any type of authentication scheme (Kerberos, NT Domain, SDI, Radius, and Internal) to retrieve these permissions/attributes.
The feature provides a way to configure RADIUS and LDAP authorization servers and event information. The network administrator configures authorization servers on a global system or group basis.
Alerts (Delete with Reason Notifications)
The VPN 3000 Concentrator and the VPN 3002 Hardware Client can send alerts with reasons for disconnects and reboots they initiate to either the VPN Client or Concentrator to which they connect. When a disconnect occurs, the VPN Client displays the disconnect notice and the reason (if available) in the Event log.
The VPN Client can also send alerts regarding disconnects that it initiates, but it does not send a reason.
SNMP Enhancements
With Release 4.0, you can configure a list of particular event identifiers to track, as well as tracking events by class and severity. For more information, see VPN 3000 Series Concentrator Reference Volume I: Configuration, Chapter 10, "Events."
Disable LAN-to-LAN Tunnels
With Release 4.0, an administrator can disable a LAN-to-LAN VPN connection without deleting its configuration. This feature can be useful for troubleshooting a connection.
Configurable giaddr for Group-Based DHCP
This feature lets an administrator define a network address on a group basis to be used in DHCP proxy address assignments. To use this feature, DHCP proxy must be enabled on the VPN 3000 Series Concentrator. The administrator enters a network address without a subnet mask under group and user configuration. This address indicates to the DHCP server the scope (that is, the range of available IP addresses on the DHCP server) within which to assign the address.
Memory Conservation Enhancements
Release 4.0 includes modifications to memory structures and allocation algorithms to limit unnecessary memory use.
Memory Statistics Display Enhancements
The VPN 3000 Concentrator and the VPN 3002 Hardware Client now monitor and display memory usage in terms of block size and free and used blocks. The display also includes a new page with detailed statistics.
Enhanced Sygate Firewall AYT Support
Release 4.0 includes support for Sygate Personal Firewall, Sygate Personal Firewall Pro, and Sygate Security Agent.
Enhanced PING Command Features
Admin users who have only read access can now do PING commands, using either the Monitor tab on the GUI or the command-line interface. The PING command also appears, as before, on the Admin tab, accessible to users who have full access privileges. The PING command now shows the reply time in milliseconds and not just "device is available."
Adjustable DPD Timeout
For dead-peer detection (DPD), this feature lets an administrator configure the interval that the Concentrator waits before beginning Keepalive monitoring. This feature applies only to Easy VPN Clients that are using IKE Keepalives.
LDAP Authorization Authenticated Bind (Login DN) Support
Release 4.0.1 adds support for LDAP Authorization Authenticated Binds by allowing you to configure the Login DN and Password fields. The field names and the order of fields on the LDAP Authentication Server configuration page have changed, as follows (CSCea73064):
•
•
The LDAP config fields are now in the following order:
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•
•
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•
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The Login DN represents a user on the LDAP server with administrative privileges. For example, on the Microsoft Active Directory LDAP Server, the Login DN could be:
cn=Administrator,cn=Users,dc=mycompany,dc=com(CSCea69156)
Usage Notes
This section lists interoperability considerations and other issues to consider before installing and using Release 4.0 of the VPN 3000 Series Concentrator software.
Online Documentation
The online documentation might not be accessible when using Internet Explorer with Adobe Acrobat, Version 3.0.1. To resolve this issue, upgrade to Acrobat 4.0 or higher. The latest version of Adobe Acrobat is available at the Adobe web site: http://www.adobe.com.
Disable Group Lock When Using SDI or NT Domain Authentication
Password Expiry Does Not Change User Profile for LAN
You must enable Start Before Logon on the VPN Client and possibly may need to make sure that DNS and WINS servers are properly configured (CSCdv73252).
Browser Interoperability Issues
The following sections describe known behaviors and issues with the indicated Web browsers.
VPN 3000 Concentrator Fully Supports Only Netscape and Internet Explorer
Currently, the VPN 3000 Concentrator fully supports only Netscape and Internet Explorer. Using other browsers might cause unacceptable behavior; for example, if you attempt to use an unsupported Web Browser to manage the VPN 3000 Concentrator, clicking any of the links might return you to the login screen. (CSCdx87630).
Internet Explorer 4.x Browser Issues
The following are known issues with Internet Explorer 4.X and the VPN Concentrator Manager (the HTML management interface). To avoid these problems, use the latest version of Internet Explorer.
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•
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After adding a new SSL certificate, you might have to restart the browser to use the new certificate.
VPN Client Used with Zone Labs Integrity Agent Uses Port 5054
VPN Clients, when used with the Zone Labs Integrity Agent, are put into a "restricted state" upon connection to the Integrity Server if a port other than 5054 is used. The restricted state simply means the VPN Client is able to communicate only with the Integrity Server; all other traffic is blocked (CSCdw50994).
Workaround:
Do one of the following:
•
•
Administer Sessions Screen Shows Data for Wrong Group
When an L2TP/IPSec connection is established, authentication should behave as follows:
1.
2.
3.
This all works properly, but in the Administration | Administer Sessions screen, the Tunnel Group displays instead of the User's Group (CSCdy00360).
Long Initialization for SNMP Traps in Releases 3.0, 3.5, and 3.5.1
In Releases 3.0, 3.5, and 3.5.1 of the VPN 3000/3002 products, the SNMP task takes 3-5 minutes to complete initialization after a device reboot. Traps being processed during this interval are queued and sent to the SNMP Management station after SNMP task initialization completes.
However, the cold start trap, normally sent as a result of a device rebooting, is never sent.
In Release 2.5.X, the cold start trap is properly sent to the SNMP Manager after a device reboots (CSCdt01583).
Windows NT Authentication Servers Can't Follow Other Server Types in the a Prioritized Authentication Server List
If an Windows NT server follows a non-NT server in the prioritized authentication server list, and the non-NT server becomes unavailable for some reason, the VPN 3000 Concentrator detects this and falls back to the Windows NT server. If the tunnel being established is PPTP or L2TP, the authentication attempt to the Windows NT server also fails.
Therefore, when configuring PPTP or L2TP connections, do not place Windows NT authentication servers behind other types of servers in the applicable authentication server list (CSCdy07226).
Accessing Online Glossary Requires Connection to Cisco.com
The Glossary button at the top of all Help screens tries to contact univercd at www.cisco.com (the Cisco documentation site). This connection requires connectivity to Cisco's main web site. If your PC does not have a corporate Internet connection or your firewall blocks access, the following error appears when you attempt to access the Glossary:
"The page cannot be displayed."
To access the Glossary, you must be connected to www.cisco.com (CSCdy14238).
SNMP Traps VRRP Notifications and cipSecMIBNotifications Are Not Supported
The VPN 3000 Concentrator does not support the VRRPNotifications and cipSecMIBNotifications SNMP traps. You can configure VRRP for these SNMP traps without getting an error message, but the traps themselves are not supported, so no action occurs. The same is true of Cisco IPSec-flow MIB notifications (CSCdx44580).
RSA Allows a CA to Issue Only One Certificate with any DN
The rekey option to renew an SSL certificate from the RSA CA results in a rejection of the request.
The resubmit/renew feature does work with RSA as long as the certificate being rekeyed or renewed is first deleted from the CA database. RSA does not allow a CA to issue more than 1 certificate with any particular DN (CSCdv27743).
Reauthentication on Rekey Interval
If you have enabled the Reauthentication on Rekey feature, the VPN Concentrator prompts users to enter an ID and password during Phase 1 IKE negotiations and also prompts for user authentication whenever a rekey occurs. Reauthentication provides additional security.
If the configured rekey interval is very short, users might find repeated authorization requests inconvenient. In this case, disable reauthentication. To check your VPN Concentrator's configured rekey interval, see the Lifetime Measurement, Data Lifetime, and Time Lifetime fields on the Configuration | System | Tunneling Protocols | IPSec | IKE Proposals | Add or Modify screen.
Note
VPN 3000 Concentrator Ignores RADIUS Packets Longer Than 4096 Bytes
Some RADIUS Servers exceed the Maximum RADIUS packet size of 4096 bytes. The VPN 3000 Series Concentrator ignores RADIUS packets that exceed this length (CSCdz90027).
Downgrading to Release 3.6 with a Release 4.0 Configuration Deletes Information from LAN-to-LAN Groups
A VPN Concentrator with more than 125 users and groups combined fails to terminate tunnels if the SEPs are not active. This is because a VPN Concentrator with no active SEPs is considered to be a model 3015, and model 3015 supports only 125 users and groups combined.
This condition could unexpectedly arise if a VPN Concentrator with a SEP-E, running Release 4.0, is downgraded to Release 3.6. This would result in the problem, because the Release 3.6 does not support the SEP-E module. The SEP-Es are detected as unknown cards if present when running Release 3.6 code.
If you encounter a situation, for whatever reason, where you are trying to load a configuration with more users than are supported by the model, the following event appears on the console after a reboot:
*************************************************************
3 03/20/2003 14:03:16.260 SEV=3 CONFIG/32 RPT=1
SERVE Too Many Entries Error. Delete an entry before adding a new one.
*************************************************************
(CSCea51435)
VPN Client Supports Elevated Privileges Using the MSI Installer
Windows Installer 2.0 must be installed on a Windows NT or Windows 2000 PC prior to configuring the PC for a Restricted User with Elevated Privileges When using elevated privileges, the VPN Client program files are created under the specific user, not "ALL" users. (CSCea37900).
Change to Network List Creation for LAN-to-LAN Configuration
The functionality that allows the administrator to create a network list from within a LAN-to-LAN configuration page has changed.
In previous releases, the administrator could create a network list from within the LAN-to-LAN configuration page. The new method for creating a network list uses a link on the LAN-to-LAN index page to the network list configuration page.
This change was resolves a problem with Reverse Route Injection when the network lists are added from within the LAN-to-LAN page. With the previous method, the routes, corresponding to the network lists that were added via the LAN-to-LAN page, were not present in the routing table (CSCea13002, CSCdz87573).
Open Caveats for VPN 3000 Series Concentrator
Caveats describe unexpected behavior or defects in Cisco software releases. The following list is sorted by identifier number.
Note
The following problems exist with the VPN 3000 Series Concentrator, Release 4.0.
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L2TP over IPSec connections fail if going through a NAT device. During the connection establishment, the VPN Client and the VPN 3000 Concentrator exchange IP addresses. When the client sends what it believes to be the VPN 3000 Concentrator's address (really the NATed address), the VPN 3000 Concentrator releases the connection.
This is because the address assigned to the interface does not match the address coming in from the client. The same issue exists on the client side. This will not be resolved until the Windows 2000 MS client supports UDP encapsulation.
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When configuring a LAN-to-LAN connection with IOS or PIX, it is important to match the keepalive configuration (both "ON" or both "OFF"). If the keepalive configuration is OFF for the VPN 3000 Concentrator and ON for the IOS device, the tunnel will be established with data.
IOS tears down the tunnel because the VPN 3000 Concentrator does not respond to IOS style keepalives if keepalives are configured to be OFF for the VPN 3000 Concentrator.
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In some cases, the Zone Labs Integrity Agent may not properly update on the Windows NT version 4.0 operating system while the VPN Client is connected, policy is changed and re-deployed, and the connection is up. Specifically, if you "Block Internet Servers" under the Firewall Security Rules in the Policy and then Deploy that new policy, a PC running Windows NT version 4.0 receives the updated policy, but it might not put the "Block Internet Servers" setting of that policy into effect.
Workaround:
Reboot the operating system.
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Due to a Microsoft limitation, Windows XP PCs are not capable of receiving a large number of Classless Static Routes (CSR). The VPN 3000 Concentrator limits the number of CSRs that are inserted into a DHCP INFORM message response when configured to do so.
The VPN 3000 Concentrator limits the number of routes to 28-42, depending on the class.
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The Concentrator may display the following events during a VPN Client connection. These events were found to be due to the client being behind a Linksys Cable/DSL router that was incorrectly modifying the Client's packets, causing them to fail authentication when received by the VPN Concentrator. The problem is more prominent if LZS compression is used.
Events:
131500 06/20/2002 17:08:34.300 SEV=4 IPSEC/4 RPT=4632
IPSec ESP Tunnel Inb: Packet authentication failed, username: gray, SPI:
4e01db67, Seq Num: 0000850f. Dump of failed hash follows.
Linksys has been notified about the problem.
Workaround:
Although no workaround currently exists, disabling LZS compression on the Concentrator helps reduce the number of events. To disable LZS compression on the Concentrator set the "IPComp" setting on the IPSec tab of the group configuration to "none".
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The Microsoft L2TP/IPSec client for Windows 98, Windows ME, and Windows NT does not connect to the VPN 3000 Concentrator using digital certificates.
Workaround:
Use Preshared keys.
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The Assigned IP address for a PIX-501 in Network Extension Mode appears on the VPN 3000 Concentrator as 0.0.0.0 until the first IPSec/Phase 2 rekey takes place. After the Phase 2 rekey completes, the Assigned IP address is correctly set to the PIX-501's private interface network address.
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Using Microsoft Internet Explorer version 5.0, you cannot create a detailed memory report from the Monitoring | System Status | Memory Status | Detailed Memory Report button. The file memory.txt is not created. The report does work if the file already exists. You can create the file initially if you run a detailed report from the CLI interface. Internet Explorer version 5.5 and Netscape work fine.
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When switching between tabs under the interfaces section of the html-management page, the action may eventually fail.
If this happens simply go back to the interface summary page and drill back down into the desired interface. Everything will resume working again.
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The LDAP Authorization failure reasons depend on how the LDAP server implements these error codes. RFC 1777-LDAP states that the LDAP server might not return an error code, therefore in those situations the VPN 3000 failure reason is "Invalid response received from server".
For the case in which the LDAP server does return a specific error diagnostic (for example, noSuchAttribute) the VPN 3000 failure reason displays the appropriate string.
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Before you use the VPN Concentrator to authenticate a user to a Linux or Unix server running a Kerberos server, follow these steps:
a.
kadmin.local -q "getprinc username"
b.
[realms]
MYCOMPANY.COM = {
master_key_type = des-cbc-crc
supported_enctypes = des-cbc-md5:normal des-cbc-md5:norealm des-cbc-md5:onlyrealm
Save the file. Then, restart the krb5kdc, kadmin, and krb524 services.
c.
kadmin.local -q "cpw -pw newpassword username"
Now you should be able to authenticate that user to your Linux/Unix Kerberos 5 server.
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HTTP Software Updates sometimes fail with "Software Update Error". Retrying the operation does not update the image.
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The text from the Help page for the Monitoring | System Status | Memory Details page in HTML incorrectly refers to "Memory Detail Report". The page is labelled and called: "Detailed Memory Report".
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The Help for the SEP-E in the Monitoring | System Status | SEP in-line SEP page is incomplete. In other sections, we make reference to the SEP-E. We should add:
"AES (SEP-E only)" to the Encryption and Decryption bullet.
This screen displays status and statistics for a VPN Concentrator SEP (Scalable Encryption Processing) or a SEP-E (Enhanced SEP) module, which performs hardware-based cryptographic functions:
–
–
–
The screen shows cumulative data since the system was last booted or reset.
Caveats Resolved in Release 4.0.4
Release 4.0.4 resolves the following issues:
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In Release 4.0.1, denying certain PINs with RSA SecurID is not functioning (for example, denying alphanumeric PINs or those based on PIN length).
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VPN 3000 Concentrator failed due to a malformed PPP IP Control Protocol message.
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The VPN 3000 Concentrator passes a blank username/password to an authentication server.
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The VPN 3000 Concentrator does not automatically add routes for more than one remote LAN. You must enter static routes for each additional remote LAN on the VPN 3000 Concentrator.
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The VPN 3000 Concentrator does not support ReadOnly community strings. All community strings are considered Read/Write.
For security reasons, the VPN 3000 should not support remote SNMP sets. If you rely on this feature, contact Cisco TAC.
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Kerberos support for 3DES/SHA not functioning.
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The ifType (1.3.6.1.2.1.2.2.1.3) for the VPN 3000 Concentrator FastEthernet interfaces is reported as 7 (iso88023Csmacd). Per IANA, ifType 7 was deprecated via RFC-draft-ietf-hubmib-etherif-mib-v3. IfType 6 (ethernetCsmacd) should be used instead.
(See ianaiftype-mib and RFC 2665):
http://www.iana.org/assignments/ianaiftype-mib
http://www.ietf.org/rfc/rfc2665.txt?number=2665
The wrong ifType might confuse some NMS systems, as they are expecting ifType=6 for Ethernet interfaces.
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Master VPN 3000 Concentrator's interfaces are "Master" after a reboot, even though one of the interfaces is Down. This occurs on VPN 3030/VPN 3080 Concentrators using software revisions 3.6.8 and 4.0.1.C
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The command snmpget to certain OIDs might cause the VPN 3000 Concentrator to fail. This happens only if the snmpget is sent to the private interface and the community string is correct.It has occurred for software versions 4.0.1 and 4.0.2.
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The AUTH login message for SNMP says user "Unknown". This should be user "SNMP".
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Some cable modems, if they loose their broadband signal, issue the IP address 192.168.1.11 address via DHCP. When this happens and the VPN 3002 accepts this address, the VPN 3002 uses the 192 address in its IKE negotiations.
The result is a tunnel that cannot pass traffic. You see from the central site Concentrator what looks like a functional tunnel with no RX bytes and no private-to-private SA.
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New pin mode for user authentication to SDI server via RADIUS not working.This issue was introduced in Release 4.0.3.REL.
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The VPN3000 might fail while displaying Memory Statistics.
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A VPN 3000 Concentrator accepts NEM PIX 501 connections with split tunneling enabled. After a period of time, the VPN Concentrator shows high cpu usage, eventually dropping connections due to dead-peer-detection (dpd) loss.
PIX NEM connections are more frequently affected than others due to their low default dpd interval. All others, however, are occasionally affected.
Workaround:
Disable split tunnleing or increase the dpd interval.
Caveat Resolved in Release 4.0.3
Release 4.0.3 resolves the following issue:
•
L2TP and PPTP connections to VPN 3000 Concentrator Release 4.0.2 causes the VPN 3000 Concentrator to fail.
Caveats Resolved in Release 4.0.2
Release 4.0.2 resolves the following issues:
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Attempting to delete a file from an ftp session into the VPN 3000 Concentrator fails and terminates the ftp session.
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When editing a LAN-to-LAN orig-only record by adding more peers to the list the following event appears in the event log:
23 10/23/2002 13:44:20.410 SEV=4 BMGT/29 RPT=1
Attempting to specify an Aggregate Group reservation [961150977 bps] on Group [group-name] Interface [2], which is outside the range of a minimum of [8000 bps] to a maximum of [100000000 bps]. (Note: The true maximum depends on the interface link rate to which the group is applied.)
Bandwidth management was not enabled at all on the interface or group.
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A customer connects from a VPN 3002 Hardware Client configured as a PPPoE client to a VPN 3000 Concentrator using a service provider. According to the customer, this configuration was working fine until recently, when the provider changed on their side to use PAP instead of MS-CHAP v1 for PPPoE authentication. Debugs from the VPN 3002 show the following authentication error:
Conn Id 1 : PPP_AuthLogErr() illegal fsm event received.
The customer sees same behavior whether they use Release 3.6.3, 3.6.1, or 3.5.5.
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In IP packets that have the TOS field set, such as in VoIP and QOS applications, the TOS field is not copied into the IPSec packet header when it gets tunneled. The packet is then treated like other IP traffic while encapsulated.
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The Ping command under "Actions" on the LAN-to-LAN sessions screen refreshes the screen instead of stating whether the tunnel is active.
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On the Ethernet 2 (Public) interface, if the checkbox "Public Interface" is not selected, then all IPSec over TCP connections cannot be initiated to the VPN 3000 Concentrator, although all IPSec over UDP initiations work fine.
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When using VPN 3000 Concentrator software Release 3.6.2, the CRL check bind request does not send the login ID/password combination. Anonymous login is successful, however.
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When a backup SEP-E fails over to Software, the Activity LED and Status LED stay green, even though the SEP-E is no longer operational.
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A VPN 3000 Concentrator, using the external interfaces on parallel VPN Concentrators with DHCP relay enabled, might fail to free message buffers. This could prevent new connections and possibly cause the device to fail.
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VPN 3000 Concentrator SDI AUTH/64 events appear in the log when a backup server is not defined. This is a cosmetic message.
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A VPN 3000 Concentrator running Release 3.6.7.C has a problem generating the XML file from the XML export if the VPN Concentrator has more than 15 LAN-to-LAN tunnels configured.
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A third-party VPN client connects to a VPN 3000 Concentrator and proposes a shorter Ipsec SA lifetime than what is configured on the VPN Concentrator (proposed 1 hour; but the VPN Concentrator is configured for a lifetime of 8 hours). The display indicates that the VPN Concentrator uses the configured 8 hours instead of the proposed 1 hour. This is a display problem only. The rekey still occurs at 1 hour.
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The User [user], Group [group] event log message for a client disconnect is separated by comma in Release 3.6.7 and later code. In the code before Release 3.6.7, this comma was not present and the User [user] Group [group] event log message was separated with a space tab format.
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Under the Group IPSec tab, the Confidence Interval option shouldn't say Easy VPN Client only, because that option also exists for the Site-to-Site tunnels. The current text is confusing and seems to be a valid option only for Remote Access clients.
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Configuration errors might occur when downgrading from Release 4.0 to 3.x. Be sure to backup your current configuration before upgrading to Release 4.0. Failure to do so might prevent you from being able to seamlessly revert back to Release 3.x.
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When using multiple static CRL servers, if the first server fails without being taken off-line, the subsequent searches also fail.
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A VPN 3000 Concentrator sends VRRP messages on the Public interface after system shutdown. This occurs with software Releases 3.6.7C, 3.6.7D, and 4.0.
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NAT-T or UDP keepalive packets are sent out the Private interface if the Public interface checkbox is not checked on the Public interface.
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On a VPN 3000 Series Concentrator running Release 3.x or 4.x, when you click on a LAN-to-LAN session to get more detailed information under Monitoring | Sessions (HTTP management console), there is a hyperlink on the top called "Back to Sessions". This link redirects you incorrectly to Administration | Administer Sessions and not back to the Monitoring | Sessions section.
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With the VPN 3000 Concentrator running Release 3.6.7.C or 4.0, the VPN 3002 Hardware Client deletes the existing tunnel upon receiving a malformed IKE packet from an unknown source.
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Clicking Cancel in the bandwidth policy and returning to the same screen from the same frame gives confusing output.
If the administrator goes into the group's bandwidth policy via the right frame after clicking Cancel while editing the same policy, the indicator None is displayed, although the running config contains some policy.
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A VPN 3000 Concentrator running Release 3.6.7 and using L2TP over IPSec with EAP-TLS AND L2TP compression stops encrypting traffic after 2-3 hours, but the connection stays up.
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VPN client can't connect using cTCP to the virtual address in the VPN 3000 Series Concentrator using load balancing following a reboot. This issue occurs only in Releases 3.6.7.F, 3.6.7.G, 4.0.1 and 4.0.1.A.
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During the TFTP upgrade of a VPN 3000 Concentrator from Release 3.6.7 to Release 4.0, reboot occurs when the word "no" is typed instead of N for the question "Reboot now? (Y/N) [Y]".
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The VPN 3000 Concentrator supports IPSec rekeys by time, volume, both, or none. The VPN 3000 Concentrator does not send a rekey attribute when it is not involved. This introduces the possibility of one side being configured for time and the other for data. In this case, the responder rekeys on both, but it does not inform its peer of its rekey requirements.
This is not a issue when interoperating with PIX or IOS, because they support only rekey on both. The VPN 3000 Concentrator should send its rekey requirement even if its peer does not have that requirement.The VPN Client software does not support rekey by data and ignores this requirement.
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VRRP and IPSec over TCP might not work in 3.6.7F and 4.0.1. They work in Release 3.6.3.
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With a VPN3002 using PPPoE, the TCP packets from behind the VPN3002 must have their MSS adjusted for split-tunneling. If the TCP MSS is not adjusted to the MTU, the MSS negotiated in the TCP session exceed the MTU for the PPPoE session. The problem occurs when the IP packets DF bit is set. This could prevent the packet from reaching the PC behind the VPN3002.
If the MSS is adjusted, the packet fixes in the PPPoE tunnel and does not require fragmentation.
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VPN 3000 Concentrator software does not have a Time Zone for Adelaide and Darwin (GMT+9:30).
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RRI support does not work properly for hardware clients in network extension mode that do not support sending an application version to the VPN 3000 Concentrator.
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Using Release 4.0.1, the VPN 3000 Concentrator appends, as expected, the configured REALM when it sends the authentication request to the Windows 2000 Kerberos server when a user uses "joe" as a username.
However, when, for example, a username like "joe.blocks@domain.com" is used, the VPN 3000 Concentrator does not append the configured REALM. The VPN 3000 Concentrator assumes the string after the @ in the user name is a user specified Realm.
Depending on how you configure the username and on how the end user enters his or her username with a domain (for example, "joe.blocks@domain.com"), you might need to turn on "Strip Realm" within the group. If the user is defined in the Active Directory as username "Joe.Block" and principal name suffix as "@domain.com", then you should enable "Strip Realm". If the user is defined in the Active Directory as username "Joe.Block@blahblah.com" and the principal name suffix as "@domain.com", then you should disable "Strip Realm".
When testing the authentication server, the Strip Realm function works only if the server is defined under the group (that is, not globally).
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Using a VPN 3060, running either Release 3.5.5 or 3.6.7.F, when we set VRRP and Master VPN's private interface fails, switchover delay happens at Backup VPN, so we cannot communicate end-to-end.
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In Release 4.0.1.A, when configuring long static CRL Distribution Points, some of the text would truncate into the Login DN field. This could affect the LDAP Distribution Point authentication process.
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Customer requests more than 200 routes to be supported with a 3005 w/ 64MB.
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Issues related to freeing buffers in memory cause the VPN 3000 Concentrator to fail.
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VPN Hardware Client 3002-8E models continuously reboot if the public interface's link is down when the unit boots.
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When using Kerberos/Active directory authentication to a Windows 2000 Active Directory, If the user is defined in the Active Directory as username "user" and has the principal name suffix "@domain.com", then you should enable "Strip Realm" and make sure the authentication server is defined in a group.
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Using release 4.0.1A or 4.0.1B, pinging from the VPN 3000 Concentrator under the Administration page of the management GUI to the peer's network does not initiate any IPSec tunnel negotiation. Using the same configuration, a ping from the VPN Concentrator builds the tunnel with the peer if we downgrade to Release 4.0.1 or 3.X. (the VPN Concentrator's private address is in the list of traffic to be encrypted, as defined in the IPSec LAN-to-LAN configuration).
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A VPN 3000 Concentrator running Release 3.6.7 cannot decode the objects in the CA certificate or in the client certificate.
The VPN 3000 Concentrator accepts the CA certificate and the certificate for the Concentrator, but it shows the Subject and Issuer as Unknown. When the client connects, it always ends in the Base group, not in the group matching the OU or the group matching the configuration.
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When you change a VPN3005 from Master to Slave, you get the following javascript error.
A Runtime Error has occurred.
Do you wish to Debug?
Line: 87
Error: 'public_ipadddr' is null or not an object
This occurs when the Public interface has the same value as the Public Group Shared Address. There is an extra 'd'.
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When using VRRP on a VPN 3000 Concentrator, L2TP/IPSec clients can not connect to the backup Concentrator when this one is active. Other IPSec clients (LAN-to-LAN, VPN Client) work fine.
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A VPN 3000 Concentrator might report that the configuration is locked if an administrator goes to Administration | Administer Sessions and sorts by group. The concentrator shows 'configuration locked by console'.
No other configuration can be done while the configuration is locked.
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CiscoSecureACS does not display Caller ID for VPN 3000 Concentrator connections
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Using IMAP4S E-Mail Proxy issue on VPN 3000 Concentrators equipped with SEP-E module(s), the following problem occurs: while checking e-mail using an IMAP4S E-Mail Proxy, the process fails and the Mail Client returns the following errors:
Your 'Inbox' folder was not polled for its unread count. Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: 'pcuser IMAPS', Server: '100.160.100.14', Protocol: IMAP, Server Response: '', Port: 993, Secure(SSL): Yes, Error Number: 0x800CCC0F
Header download for the 'Inbox' folder did not complete. Could not select 'Inbox' on the IMAP server. You might try refreshing your folder list to synchronize with the IMAP server. Account: 'pcuser IMAPS', Server: '100.160.100.14', Protocol: IMAP, Server Response: 'This IMAP command could not be sent to the server before the connection was terminated.', Port: 993, Secure(SSL): Yes, Error Number: 0x800CCC0F
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An exception in BMGT might occur immediately after loading Release 4.1 if a specific configuration combination, related to bandwidth management, exists.
All of the following must be true in order to encounter this problem:
Within the Group / Bandwidth settings:
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Within the interface settings:
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There is a simple work around that prevents the exception without affecting the operation of the VPN 3000 Concentrator.
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If RIP listen is enabled and the number of learned routes exceeds the capacity of the routing table, an interface link down/link up causes some statically configured routes to show up as RIP routes. Other statically configured routes do not show up in the routing table at all.
This can cause a failure in tunnel negotiation and data transmission, depending on the specific configuration of the network.
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LAN-to-LAN tunnels using 0.0.0.0 as the local or remote end can have issues routing traffic to connected clients, where traffic meant for the client gets routed over the LAN-to-LAN link.
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A small amount of memory leaks each time you perform an authentication server test from the web (or XML) interface.
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Username and password cannot be changed properly via XML.
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Users who have ACLs assigned to their profile might not be able to pass traffic after some time.
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Certificate group matching based on matching fields within the client's subject field fails.
The indicating log message is:
49795 07/31/2003 17:54:12.410 SEV=5 IKE/79 RPT=1026 10.229.61.227
Group [PKI2-Test]
Validation of certificate successful
(CN=<unavailable>, SN=3D768903)
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After upgrading to 4.0.1.D or E, the VPN 3000 Concentrator tries to authenticate users to the Base Group instead of to the defined group. Errors on the logs add extra characters to the Group
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The way that Symantec's Raptor VPN deletes rekeyed IKE SAs is might cause traffic to the VPN 3000 Concentrator to stop flowing.
Caveats Resolved in Release 4.0.1
Release 4.0.1 resolves the following issues:
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Autoupdate continues to retry even when tunnel fails.
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The IPSec terminating interface is the External Interface, and the Inside Interface is the Private Interface. The Ethernet 2 (Public) interface has the Public Interface check box checked. but the Interface is set to "NOT CONFIGURED". When this happens, all the IPSec/NAT connections fail by giving the error:
Could not register UDP port for NAT enabled IPSec!
Unchecking the public Interface check box when its not configured or giving it any bogus IP Address resolves the issue, and IPSec/NAT starts working fine.
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If the DHCP Server address pool on the VPN 3002 is modified, it still renews IP Address from the previous address pool.
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The VPN3000 Concentrator will transmit data to exceed the negotiated Max Window Size. If going through a PIX edge firewall, the PIX shuts down the session when the window size is exceeded.
This occurs only when the ACKs coming back are delayed in transit.
The default window size for cTCP is 64K. The VPN Client and VPN3002 Hardware Client both generate ACKs at 8K intervals to avoid window issues. In this case the delays in ACK transport are significant enough that the window size is exceeded.
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VPN 3002 Ethernet ports might hang intermittently when connected to a Centercom hub.
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A VPN 3000 Concentrator running 3.6.7 cannot decode the objects in the CA certificate or in the Client certificate.
The VPN 3000 Concentrator accepts the CA cert and the certificate for the Concentrator, but in Subject and Issuer, it shows Unknown. When the Client connects, it always ends up in the base group, not in the group matching the OU or the group matching config.
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LDAP Authorization to a Microsoft Active Directory LDAP server using authenticated Bind requests is not supported in this release. Only anonymous Binds are currently supported.
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When an SDI server is defined using its DNS hostname instead of its IP address, SDI authentications no longer function after the VPN Concentrator has been rebooted. A workaround is to use the IP address instead of the hostname of the SDI server.
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The fields on the LDAP Authorization configuration page have changed due to changes required to fix CSCea69156.
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Changing from DHCP to STATIC on an interface does not stop IP event logs 29 and 34 from showing in the filterable event log.
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With authentication set to Radius with Expiry, the user is prompted for username, password and domain name when connecting. The ACS authentication report shows "domain\username", but the ACS accounting report page shows only the "username".
Caveat Resolved in Release 4.0
Release 4.0 resolves the following issues:
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The description of the IPSec Backup Servers feature in the VPN 3000 Concentrator Series Reference documentation indicates that it applies only to the VPN3002 Hardware Client. The feature now applies to the Software Client as well. For information about this feature and how to configure it, on the VPN Concentrator, see VPN Client Administrator Guide, Chapter 1. For information about how to configure Backup Servers in the VPN Client, see VPN Client User Guide.
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If a LAN-to-LAN tunnel between a VPN 3000 Concentrator and an IOS device is misconfigured and repeatedly fails to establish, then the VPN 3000 Concentrator could enter a state where a reboot is required.
One way to encounter this problem is to try to setup IOS to handle both LAN-to-LAN tunnels and Remote Access tunnels on the same interface, without breaking the IOS interface into V-LANs. This is a misconfiguration and is not supported by IOS, but it can lead to problems with the VPN 3000 Concentrator.
This configuration is not supported because IOS does not allow the same crypto map to be used to terminate both LAN-to-LAN tunnels and Remote Access tunnels. In addition, IOS only allows one crypto map to be applied per interface.
Consequently, if both types of tunnels must be terminated on a single physical interface, that interface must be broken out into V-LANs. Dividing the physical interface in this way enables a different crypto map to be applied to each virtual interface. This in turn enables both types of tunnels to be terminated on the same physical interface while maintaining a valid configuration.
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When viewing bandwidth management statistics via the CLI, with Bandwidth Management enabled and multiple users connected, all user sessions scroll through on the screen without the user being prompted to press space to continue or Q to quit.
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Documentation for the Bandwidth Management feature in Release 3.6.1 refers to a configuration option in which bandwidth aggregation is automatically applied to a LAN-to-LAN connection when a bandwidth reservation policy is applied to a LAN-to-LAN connection. This feature is not available in Release 3.6.1.
To ensure that bandwidth is always available for a LAN-to-LAN connection via the HTML interface, navigate to Configuration | User Management | Groups. Highlight the LAN-to-LAN group, and select the Assign Bandwidth Policies button. Select the public interface, and next to the Bandwidth Aggregation parameter, enter the amount of bandwidth to reserve from the total available bandwidth for this connection.
If bandwidth aggregation is not set for a LAN-to-LAN connection, a situation might occur where there is not enough bandwidth available for the tunnel to be established.
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The VPN 3000 Concentrator continually requests the node secret from the RSA server. The RSA server considers these requests as failed login attempts by the RSA server; therefore, the user's account is disabled.
This problem occurs under the following conditions:
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If you add and delete filters through the GUI interface (Configuration |System |Policy Management | Traffic Management | Filters), there is a very small memory leak for each filter created and deleted.
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The VPN 3000 Concentrator does not consistently send Delete with Reason messages to all the connected clients when you do Reboot *NOW*. The VPN Clients believe they are still connected, but they will eventually disconnect due to the Client's Dead-Peer-Detection mechanism.
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Authorization server statistics are not available in this release.
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If you use Active Directory/Kerberos authentication on the VPN 3000 Concentrator and would like to authenticate to a Windows 2000 or .NET Active Directory server, you must change all the users' Account options to "Use DES encryption types for this account". This is required because the Release 4.0 VPN 3000 Concentrator uses DES encryption, but Windows Active Directory uses RC4.
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When using Active Directory/Kerberos for authentication, if the user types in the username or password incorrectly, the VPN 3000 Concentrator simply ends the connection after the first failure. The user should be prompted three times before failing as it does when using Internal, Radius, or NT Domain authentication methods.
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On the Monitoring | Statistics | Authentication and Monitoring | Statistics | Accounting screens, if you click Reset, then all group-based statistics show up with the Group column=Base Group. In order to show group-based statistics again, click Restore.
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SEP-E to SEP-E failover and SEP-E to software failover are not supported in Beta releases.
New connections are not accepted after SEP-E failover with several calls previously connected and passing data.
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Duplicate of CSCdz85139.
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If a simple password is configured under the OSPF tab, in any of the interface configuration pages, the deleted entry will re-appear even after deleting the password, selecting none for OSPF authentication and clicking apply.
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When a user fails authentication due to a restriction placed on the account at the Active Directory server, the VPN 3000 Concentrator Events do not display the reason for the failure. Some restrictions on the account could be Account Expired, Account Disabled, Account Locked-Out, Not within Logon Hours and Password Change required. For most of these restrictions you will see the following Events:
124 01/20/2003 11:12:55.590 SEV=10 AUTHDECODE/43 RPT=4
Kerberos: Error type: Client's creds have been revoked
130 01/20/2003 11:12:55.590 SEV=4 AUTH/9 RPT=9 70.139.1.5
Authentication failed: Reason = Invalid response received from server handle = 196, server = 198.133.219.25, user = myuser
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When you add an LDAP Authorization server, the events refer to the server with "type=TACACS+."
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The VPN 3000 Concentrator may leak memory when a VPN Client connects and downloads and ACL User Filter from the RADIUS Server. The amount of memory leaked is closely associated with the size of the actual filter.
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If you externally authenticate Groups and Users to a RADIUS Server, the User filters assigned by the RADIUS Server get corrupted. It is recommended that you authenticate the Groups locally on the Concentrator and the Users externally on a RADIUS Server when utilizing the RADIUS User Filter feature.
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RADIUS based user filters are not cleared from the Concentrator when PPTP or L2TP connections are terminated.
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Using Netscape version 4.7, under Admin | Admin Sessions, the RADIUS User ACL filters get displayed in a narrow 1 inch wide column with no scroll capabilities. The filters are displayed correctly under Monitoring | Dynamic filters.
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If your VPN Concentrator has a SEP-E installed, you might see the following event message when you boot:
CAPI-RSA PKCS1 payload to be decrypted is not in PKCS1 format, bad block type=[0x7][0xb8].
If you receive this event, you will be unable to use HTTPS to manage the VPN Concentrator. To workaround this problem, delete the SSL certificate (from the Administration | Certificate Management screen), then generate a new SSL certificate.
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When Strip Realm is disabled, accounting requests should be sent as user name=user. But instead, accounting requests are incorrectly sent with user name=user@realm (Duplicate of CSCea44988).
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Using Authentication=RADIUS with Expiry, the VPN Concentrator establishes the tunnel but skips either RADIUS or LDAP authorization.
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When using Kerberos/Active Directory authentication, if a user types a username with the "@" symbol and Realm using all lowercase for the realm (that is, usernam@mycompany.com instead of username@MYCOMPANY.COM), the following error occurs on the VPN Concentrator, and the Kerberos server status changes to "Not-in-service".
78 02/19/2003 16:59:49.250 SEV=7 AUTHDBG/76 RPT=8
Unable to correlate received message with authentication session83 02/19/2003 16:59:53.150 SEV=4 AUTH/15 RPT=76
Server name = 100.136.50.2, type = KERBEROS,
group = KerberosGroup, status = Not-in-serviceWhen using Kerberos/Active directory for authenticating, users should enter only their username, username@REALM.COM with Realm all in UPPERCASE letters, or use the Strip Realm setting for the Group on the Concentrator.
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Statically assigned filters take precedence over dynamically assigned filters. It should be the other way around.
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After upgrading from Release 3.6.7 to Release 3.6.7A (through Release 3.6.7.C), a VPN 3000 Concentrator does not redirect any traffic coming in from a vpn client to across Lan-to-LAN tunnel.
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When a backup SEP-E fails over to Software, the Activity LED and Status LED stay green, even though the SEP-E is no longer operational.
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PIX-to-PIX spoke connectivity when each PIX is connected LAN-to-LAN to a VPN 3015 Concentrator running Release 3.6.7.A is broken.
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LDAP Authorization to a Microsoft Active Directory LDAP server using authenticated Bind requests is not supported in this release. Only anonymous Binds are currently supported.
Documentation Updates
The Cisco VPN 3000 Series Concentrator documentation set has been revised for this release and is available online through Cisco Connection Online (CCO). This section contains any changes and corrections to the documentation that occurred after the documentation was published.
Documentation Changes
The following document requires modifications, reflecting product changes, as noted in the following sections:
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Changes to VPN 3000 Series Concentrator Reference Volume I: Configuration
Please note the following changes to the Configuration manual.
Syslog Servers Now Supported on Both Windows and UNIX Operating Systems
The VPN 3000 Concentrator now supports syslog servers on both Windows and UNIX (Linux and Solaris) operating system platforms. In VPN 3000 Series Concentrator Reference Volume I: Configuration, Chapter 10, "Events," and in the corresponding online Help, the text and the screen captures refer to UNIX syslog servers. This restriction on the type of syslog server operating environment no longer exists.
Inbound Firewall Rules Must Not Limit Traffic to UDP Source Port 4500
In VPN 3000 Series Concentrator Reference Volume I: Configuration, Chapter 7, "Tunneling Protocols," make the following change to the note on page 7-35, under Tunneling Protocols | Configuration | System | Tunneling Protocol | IPsec | NAT Transparency area, regarding IPsec over NAT-T:
Note
VPN 3000 Concentrator Documentation Updates
In addition to these Release Notes, the following documents are new or have been updated for Release 4.0:
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Related Documentation
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Service and Support
For service and support for a product purchased from a reseller, contact the reseller, who offers a wide variety of Cisco service and support programs described in "Service and Support" in Cisco Information Packet shipped with your product.
Note
For service and support for a product purchased directly from Cisco, use CCO.
Software Configuration Tips on the Cisco TAC Home Page
The Cisco TAC home page includes technical tips and configuration information for the VPN 3000 Concentrator and client. Find this information at:
http://www.cisco.com/warp/public/707/#vpn3000.
Obtaining Documentation
Cisco provides several ways to obtain documentation, technical assistance, and other technical resources. These sections explain how to obtain technical information from Cisco Systems.
Cisco.com
You can access the most current Cisco documentation on the World Wide Web at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
International Cisco websites can be accessed from this URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which may have shipped with your product. The Documentation CD-ROM is updated regularly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual or quarterly subscription.
Registered Cisco.com users can order a single Documentation CD-ROM (product number DOC-CONDOCCD=) through the Cisco Ordering tool:
http://www.cisco.com/en/US/partner/ordering/ordering_place_order_ordering_tool_launch.html
All users can order monthly or quarterly subscriptions through the online Subscription Store:
http://www.cisco.com/go/subscription
Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm
You can order Cisco documentation in these ways:
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http://www.cisco.com/en/US/partner/ordering/index.shtml
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Documentation Feedback
You can submit comments electronically on Cisco.com. On the Cisco Documentation home page, click Feedback at the top of the page.
You can e-mail your comments to bug-doc@cisco.com.
You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com, which includes the Cisco Technical Assistance Center (TAC) website, as a starting point for all technical assistance. Customers and partners can obtain online documentation, troubleshooting tips, and sample configurations from the Cisco TAC website. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC website, including TAC tools and utilities.
Cisco.com
Cisco.com offers a suite of interactive, networked services that let you access Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.
Cisco.com provides a broad range of features and services to help you with these tasks:
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To obtain customized information and service, you can self-register on Cisco.com at this URL:
http://tools.cisco.com/RPF/register/register.do
Technical Assistance Center
The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available: the Cisco TAC website and the Cisco TAC Escalation Center. The type of support that you choose depends on the priority of the problem and the conditions stated in service contracts, when applicable.
We categorize Cisco TAC inquiries according to urgency:
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Cisco TAC Website
The Cisco TAC website provides online documents and tools to help troubleshoot and resolve technical issues with Cisco products and technologies. To access the Cisco TAC website, go to this URL:
All customers, partners, and resellers who have a valid Cisco service contract have complete access to the technical support resources on the Cisco TAC website. Some services on the Cisco TAC website require a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to this URL to register:
http://tools.cisco.com/RPF/register/register.do
If you are a Cisco.com registered user, and you cannot resolve your technical issues by using the Cisco TAC website, you can open a case online at this URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, we recommend that you open P3 and P4 cases online so that you can fully describe the situation and attach any necessary files.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. These classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer automatically opens a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
Before calling, please check with your network operations center to determine the Cisco support services to which your company is entitled: for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). When you call the center, please have available your service agreement number and your product serial number.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
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http://www.cisco.com/en/US/products/products_catalog_links_launch.html
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http://www.cisco.com/go/packet
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http://www.cisco.com/go/iqmagazine
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http://www.cisco.com/en/US/about/ac123/ac147/about_cisco_the_internet_protocol_journal.html
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http://www.cisco.com/en/US/learning/le31/learning_recommended_training_list.html
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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