This is a modified version of the Cisco TACACS software enhanced and maintained by Vikas Aggarwal (vikas@navya.com).

The software is available from http://www.netplex-tech.com/xtacacsd or via FTP from ftp.navya.com under pub/

Other programs included with this package are:

In addition to xtacacs, you should also look at TACACS_PLUS as well as RADIUS which are alternate authentication protocols present in the newer Cisco software (IOS v11.0 etc.).