Setup SSH to Cisco router / switch / ASA

Using your Telnet session or Console session do the following:

cisco(config)# hostname <name>
 cisco(config)# ip domain-name <domain>
 cisco(config)# crypto key generate rsa 2048
 cisco(config)# ip ssh version 2

 

Now the SSH keys have been generated you can assign SSH to a VTY (Virtual Teminal Lines), I have also set the login to ‘login local’ so make sure you have setup a local user for access.

line vty 0 4
 transport input ssh
 login local

 

RESET RS SSH KEYS

There maybe times when you need to reset the SSH keys, this command will remove the current keys so you can generate new ones

cisco(config)# crypto key zeroize rsa

 

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