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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-29225-01
Chapter 13 Configuring RADIUS and TACACS+ Servers
Configuring and Enabling TACACS+
This section contains this configuration information:
• Default TACACS+ Configuration, page 13-25
• Identifying the TACACS+ Server Host and Setting the Authentication Key, page 13-25
• Configuring TACACS+ Login Authentication, page 13-26
• Configuring TACACS+ Authorization for Privileged EXEC Access and Network Services,
page 13-27
• Starting TACACS+ Accounting, page 13-28
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 administrators accessing the access point
through the CLI.
Identifying the TACACS+ Server Host and Setting the Authentication Key
You can configure the access point 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:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
tacacs-server host hostname [port
integer] [timeout integer] [key string]
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 access
point 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 access point and the TACACS+
daemon. You must configure the same key on the TACACS+ daemon
for encryption to be successful.
Step 3
aaa new-model Enable AAA.
Step 4
aaa group server tacacs+ group-name (Optional) Define the AAA server-group with a group name.
This command puts the access point in a server group subconfiguration
mode.