North American Network Operators Group

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Re: Best practices inquiry: tracking SSH host keys

  • From: Simon Leinen
  • Date: Thu Jun 29 04:20:34 2006

Jeroen Massar writes:
> The answer to your question: RFC4255
> "Using DNS to Securely Publish Secure Shell (SSH) Key Fingerprints"

Yes, that's cool if your SSH client supports it (recent OpenSSH's do).

> You will only need to stuff the FP's into SSHFP DNS RR's and turn on
> verification for these records on the clients. Done.

How do you get the SSH host key fingerprint of a Cisco into SSHFP syntax?

> In combo with DNSSEC this is a (afaik ;) 100% secure way to at least get
> the finger prints right.