Go into “config terminal” mode.
crypto key generate rsa modulus 1024
ssh 0.0.0.0 0.0.0.0 inside
ssh 0.0.0.0 0.0.0.0 outside
You can specify exact addresses you wish to allow access if you wish.
ssh timeout 10
ssh version 2
username [username] password [password]
aaa authentication ssh console LOCAL
show run ssh