9Jul/090
Cannot SSH into PIX/ASA firewall
Issue:
When attempting to SSH into a PIX/ASA firewall you receive the following error on the client
ssh_exchange_identification: Connection closed by remote host
Investigating the log on the PIX/ASA will yield a corresponding error:
Fail to establish SSH session because RSA host key retrieval failed.
Cause:
The issue is the result of a corrupt or missing RSA key on the firewall.
Resolution:
You need to generate a new RSA key on the firewall.
Magic juju (from either SDM or a prompt):
conf t
ca generate rsa key 1024
wr mem
copy run start
ca generate rsa key 1024
wr mem
copy run start