Can’t Login to Your ASA via SSH or Telnet?

I deployed a Cisco ASA at a location and couldn’t get logged in via SSH. I would get prompted, but, no matter what username/password I put in, it would just reject me. After some digging, it turns out that I forgot this command.

aaa authentication ssh console LOCAL

When I put this in, it let me right in as expected. I have no clue what the deal was. I guess I assumed that the ASA would use the local userbase if a AAA service wasn’t configured. I guessed wrong.

I’m sure this will apply to telnet sessions as well. I’d also bet money that equivalent PIX OS versions do that same, so keep an eye out.

Aaron Conaway

I shake my head around sometimes and see what falls out. That's what lands on these pages. If you have any questions, the best way to contact me is through Twitter at @aconaway.

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