TACACS+ Overview

TACACS+ is an improved version of TACACS. TACACS+ forwards username and password information to a centralized security server. Figure 3-11 shows a typical TACACS+ topology.

Figure 3-11. General Features
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General Features

TACACS+ has the following features:

  • TCP packets for reliable data transport— TACACS+ uses TCP as the communication protocol between the remote client and security server.

    - Supports the AAA architecture

  • Link is encrypted— The data payload of IP packets (TCP packets) is encrypted for security and is stored in encrypted form in the remote security database.

    - Supports PAP, CHAP, and MS-CHAP authentication ...

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