> Is proxy arp the way for me to go or is there a better way for me to get
> there?

Well, I've never used proxy arp, but this can be done with openbsd.  You
put two NICs in your machine, one for incoming connection, one that
goes to a hub/switch for your other machines.  Neither of the interfaces
needs to use one of your "live" IP addresses.  In fact, I don't think they
need IPs at all.  OpenBSD has a device called bridge0 that you would tell
IPF to use.

It's not a simple task and will require quite a bit of reading.  But once
you've got it up, it's a perfectly transparent bridge.  You tell IPF which
packets you want to throw away and it does so as they come across the line.
I love having machines that people can ssh into, but can't ping. :)

Now, OpenBSD isn't your only solution.  The exact same thing can be
accomplished in Free and NetBSD as well, and I believe in Linux too, though
I haven't played with bridging in Linux.

I thought someone mentioned it maybe a month or so ago... Did you check the
archives?

Gabe
-- 
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Gabe Turner                                             gabe at msi.umn.edu
SGI Origin Systems Administrator,
University of Minnesota Supercomputing Institute
 for Digital Simulation and Advanced Computation         www.msi.umn.edu
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