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How to securely control another Mac over the internet
Authored by: dcoyle on Jan 21, '07 08:31:41AM
From the original post:
Next I enabled Remote Login (i.e. ssh server) on my PowerBook. I created a dummy, non-priveleged account (called "dummy") to receive the tunnel. I generated a DSA public-private key pair on the Mini under my dad's account (in Terminal, type ssh-keygen -t dsa and accept the defaults). I copied my dad's public key to the ~/.ssh/authorized_keys2 file under the dummy account. This step isn't really necessary if you don't mind your switcher having to remember and type in the dummy user's password, but that didn't meet my "simple" criterion above. Again, I had the luxury of doing this work directly on the Mini. With iChat and a little cutting and pasting, it could be done remotely as well. Note that there's no real security risk having your switcher email or IM you their public key -- that's why it's "public."
I'm pretty sure the required password is for the dummy account. If it's a non-privileged account, and setting up the keys as described is a hassle (most likely because you don't have both machines in front of you), you could just give the dummy account a simple password.

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