(Terminal Access Controller Access Control System) An access control protocol used to authenticate a user logging into the network. TACACS is a simple username/password system. Extended TACACS (XTACACS) adds more intelligence in the server, and TACACS+ adds encryption and a challenge/response option. See challenge/response.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
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