Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.

Without the ability to disable Xauth, a user cannot select which peer on the same crypto map should use Xauth. That is, if a user has router-to-router IP security (IPsec) on the same crypto map as a virtual private network (VPN)-client-to-Cisco-IOS IPsec, both peers are prompted for a username and password. In addition, a remote static peer (a Cisco IOS router) cannot establish an Internet Key Exchange (IKE) security association (SA) with the local Cisco IOS router. (Xauth is not an optional exchange, so if a peer does not respond to an Xauth request, the IKE SA is deleted.) Thus, the same interface cannot be used to terminate IPsec to VPN clients (that need Xauth) as well as other Cisco IOS routers (that cannot respond to Xauth) unless this feature is implemented.

See the following sections for configuration tasks for the Ability to Disable Extended Authentication for Static IPsec Peers feature. Each task in the list is identified as either required or optional.

• Disabling Xauth for Static IPsec Peers