Cisco Cisco IOS Software Release 12.4(4)T

When a virtual private dialup network (VPDN) user connects to a network access server (NAS) 
configured to use a remote server for authentication, authorization, and accounting (AAA), the NAS 
forwards the username to the remote AAA server. Some RADIUS or TACACS+ servers require the 
username to be in a particular format, which may be different from the format of the full username. For 
example, the remote AAA server may require the username to be in the format user@domain.com, but 
the full username could be prefix/user@domain.com@suffix. 

The Configurable Domain Name Prefix and Suffix Stripping feature allows the NAS to strip 
incompatible portions from the full username before forwarding the reformatted username to the remote 
AAA server.

Configuration information is included in the “Configuring AAA for VPDNs” chapter in the 

, Release 12.4T at the following URL:

Command reference information is included in the Cisco IOS VPDN Command Reference, 
Release 12.4T at the following URL:

The following commands are new or modified for this feature:

An alphabetical list of all Cisco IOS Release 12.4T commands is in the Cisco IOS Master Command List, 
Release 12.4T at the following URL: