from Cisco docs
Configuring Local SSH (No AAA Authentication)
It is also possible to set up an SSH connection to the PIX with local authentication and no AAA server; however, there is no discrete per-user username. The username is always "pix."
Use the following commands to configure local SSH on the PIX:
hostname goss-d3-pix515b domain-name rtp.cisco.com ca gen rsa key 1024 !--- Caution: The RSA key will not be saved without !--- the ca save all command. !--- The write mem command will not save it! !--- In addition, if the PIX has undergone a write erase !--- or has been replaced, then cutting and pasting !--- the old configuration does not generate the key. !--- You must re-enter the ca gen rsa key command. !--- If there is a secondary PIX in a failover pair, doing write standby !--- will not copy the key from the primary to the secondary. !--- You must also generate and save the key on the secondary device. ssh 172.18.124.114 255.255.255.255 inside ssh timeout 60 passwd cisco123