CISCO ASA 5505 - How to configure SSH access:


ISSUE:
The Cisco ASA 5505 does not have a simple automatic mechanism to configure SSH access.


SOLUTION:
To achieve this goal we must enter some commands in command line interface from the instruments bar:


Tools –> Command Line Interface


Now we must enter these commands:


*) conf t
*) username password
*) passwd
*) ssh x.x.x.x x.x.x.x {inside/outside} —>The IP/Network enabled for access to asa(e.g. 10.0.0.0 255.255.255.0
*) crypto key generate rsa modulus {512/768/1024/2048}
*) aaa authentication ssh console LOCAL


Check this by using Putty client for example.
Pay attention to the ENABLE PASSWORD when you connect with ssh. It is the same used in ASDM.


Source: http://diegotech.wordpress.com/2011/04/05/how-to-configure-asa-5505-ssh-access/