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I have a set of VMs, which have a network private to them, and then they each have a public IP. Is it possible to have a set of rules for the public IP (say no password authentication, non-standard port) and the have another set of rule for the private network (password authentication, port 22) for ssh?

This is on Ubuntu 10.04

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What operating system is this? – Evan Anderson Oct 8 '10 at 11:56
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It isn't necessary to configure a second instance for this. Check the "Match" keyword in the sshd_config manpage

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I was hoping that there would be a solution like this, thank you – Dan McClain Oct 12 '10 at 17:09
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Install/configure another instance of sshd to run under the different set of rules. Check out this link for hints.

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upvoting because this is on the right lines. No need to install twice though, just use two config files for sshd and use -f when launcing the server (twice). – Sirex Oct 8 '10 at 12:44
I figured that this would probably be the way to have this work. – Dan McClain Oct 8 '10 at 12:45
Thanks for the clarification, Sirex; +1 to you! I didn't think that it would be necessary to install a second instance, but I don't have a *nix box to try on. Changed "Install" to "Install/Configure" – gWaldo Oct 8 '10 at 13:12
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