I always remember there is something I have to do for ssh to a pix or asa firewall to work, so here it is, the commands I remember I forgot:
hostname myfirewall
domain-name mydomain.mytld
ca gen rsa key 1024
ssh 0.0.0.0 0.0.0.0 outside #if you want to permit ssh from the Internet to your firewall
ssh timeout 20 #this is in minutes, I find the default of 5 to be irritating
passwd YourPasswordGoesHere
ca save all
then ssh using this from a *nix machine:
ssh -1 pix@publicIP
the ssh password is the "YourPasswordGoesHere" above NOT the enable password
