2010.2 networking issue

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Did a clean install of the 2010 Spring install on a friend's computer,
but now having an really weird networking issue.  It won't allow an
incoming ssh connection.  From a shell prompt, I can do a "ssh
127.0.0.1" and "ssh 192.168.1.101" (for the internal net IP address) and
it works just fine.  However, trying to ssh to the machine from another
machine on the local home network goes nowhere - it just times out.  I
can ping the windows box on the network from the Linux box, but can't go
the other direction - again, doing a ping of the Linux box from the
Windows box just times out.

What the heck am I missing?  It's clearly able to talk out to the
network, but it doesn't seem to be too interested in listening to the
network.  Both /etc/hosts.allow and /etc/hosts.deny are empty, so it's
not that getting in the way....

Any ideas?

                    --Dave


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