Configure SSH communication on L3_Switch.
The topology is simple and our task is to configure SSH on L3_switch, we need the following steps on L3_Switch for accomplish this:
Configure the hostname:
Router#Enable
Router#config t
Router#(config)hostname L3_Switch
Telnet does required only the password where as SSH uses both username and password. Therefore we need to create a user for SSH.
L3_Switch#(config) aaa new-model
L3_Switch#(config) username admin secret 5 cisco (“secret” uses the MD5 hash in running config, where 5 Specifies a HIDDEN secret will follow and Cisco is the hidden password)
Configure the DNS domain:
L3_Switch#(config)ip domain name cisco.com
Enable SSH:
L3_Switch#(config) crypto key generate rsa
How many bits in the modulus [512]:
(If you can want to enable 512 bits encryption then press enter otherwise you can type the other values like 1024 etc.)
L3_Switch#(config)#ip ssh version 2
L3_Switch# (config)#line vty 0 4
L3_Switch# transport input SSH
L3_Switch# (config-line)#login local
Testing:
You can test SSH configuration from R2 by accessing L3_switch by SSH with following command:
ssh -l admin 192.168.72.100
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