Cisco WS-C2960-24TC-S Software Guide - Page 149
Default TACACS+ Configuration, Identifying the TACACS+ Server Host and Setting the Authentication Key
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Chapter 8 Configuring Switch-Based Authentication Controlling Switch Access with TACACS+ authorize, or to keep accounts on users; if that method does not respond, the software selects the next method in the list. This process continues until there is successful communication with a listed method or the method list is exhausted. These sections contain this configuration information: • Default TACACS+ Configuration, page 8-13 • Identifying the TACACS+ Server Host and Setting the Authentication Key, page 8-13 • Configuring TACACS+ Login Authentication, page 8-14 • Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services, page 8-16 • Starting TACACS+ Accounting, page 8-17 Default TACACS+ Configuration TACACS+ and AAA are disabled by default. To prevent a lapse in security, you cannot configure TACACS+ through a network management application. When enabled, TACACS+ can authenticate users accessing the switch through the CLI. Note Although TACACS+ configuration is performed through the CLI, the TACACS+ server authenticates HTTP connections that have been configured with a privilege level of 15. Identifying the TACACS+ Server Host and Setting the Authentication Key You can configure the switch to use a single server or AAA server groups to group existing server hosts for authentication. You can group servers to select a subset of the configured server hosts and use them for a particular service. The server group is used with a global server-host list and contains the list of IP addresses of the selected server hosts. Beginning in privileged EXEC mode, follow these steps to identify the IP host or host maintaining TACACS+ server and optionally set the encryption key: Step 1 Step 2 Command configure terminal tacacs-server host hostname [port integer] [timeout integer] [key string] Purpose Enter global configuration mode. Identify the IP host or hosts maintaining a TACACS+ server. Enter this command multiple times to create a list of preferred hosts. The software searches for hosts in the order in which you specify them. • For hostname, specify the name or IP address of the host. • (Optional) For port integer, specify a server port number. The default is port 49. The range is 1 to 65535. • (Optional) For timeout integer, specify a time in seconds the switch waits for a response from the daemon before it times out and declares an error. The default is 5 seconds. The range is 1 to 1000 seconds. • (Optional) For key string, specify the encryption key for encrypting and decrypting all traffic between the switch and the TACACS+ daemon. You must configure the same key on the TACACS+ daemon for encryption to be successful. OL-8603-04 Catalyst 2960 Switch Software Configuration Guide 8-13
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