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Configuring Switch-Based Authentication
How to Configure Switch-Based Authentication
Identifying the TACACS+ Server Host and Setting the Authentication Key
Configuring TACACS+ Login Authentication
Before You Begin
To secure the switch for HTTP access by using AAA methods, you must configure the switch with the ip http
authentication aaa global configuration command. Configuring AAA authentication does not secure the switch for HTTP
access by using AAA methods.
Command Purpose
1. configure terminal Enters global configuration mode.
2. tacacs-server host hostname [port
integer] [timeout integer] [key string]
Identifies the IP host or hosts maintaining a TACACS+ server. Enters this
command multiple times to create a list of preferred hosts. The software
searches for hosts in the order in which you specify them.
hostname—Specifies the name or IP address of the host.
(Optional) port integer—Specifies a server port number. The default is
port 49. The range is 1 to 65535.
(Optional) timeout integer—Specifies 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) key string—Specifies 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.
3. aaa new-model Enables AAA.
4. aaa group server tacacs+ group-name (Optional) Defines the AAA server-group with a group name.
This command puts the switch in a server group subconfiguration mode.
5. server ip-address (Optional) Associates a particular TACACS+ server with the defined
server group. Repeat this step for each TACACS+ server in the AAA
server group.
Each server in the group must be previously defined in Step 2.
6. end Returns to privileged EXEC mode.
7. show tacacs Verifies your entries.
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