Restricting users using one port

Alex Bligh alex at
Sun Oct 9 19:15:24 EST 2011

I have ssh running on port 22 and (say) port 33333. Port 22 is restricted at
layer 3 so not much can get to it. Port 33333 is open to the world.

I only want to allow one user to authenticated using port 33333, but
all users to authenticate using port 22.

Is there any way to do this without running 2 sshd processes?

Alex Bligh

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