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Yep. I'm purely guessing here based on my experience with other academic institutions, but I would say that your 10net is behind a Cisco PIX firewall (or another embedded system that does the same work), which is doing some kind of network address translation (NAT). The school probably does have externally-addressable IP addresses mapped over some portion of your 10net, but they may very well not have any for your machines. (That is, to the outside world, most of the stuff that's in 10.whatever looks like the same IP address, but a couple machines may look like specific IP addresses.)
Yes. If you already have one externally addressable IP address on your Linux machine, then doing what you describe (called multihoming, btw) will work as long as there is an ethernet port you can plug the Linux machine into that is on the right (physical) ethernet segment to reach the DHCP server. (I'm guessing that's not hard; all the ports in that conference room which you've kindly been letting PLUG use popped up on 10.1.yadda, so you probably have a similar port in your office.)
You should either make sure that your machine is not vulnerable to any nasty remote attacks for yourself, or check with your site's security policy about doing this kind of multihoming dance first. (Depends on how concientious you want to be and how bureaucratic USP is about this kind of thing.)
Thanks again!
Guillermo
+==================-------------- --- -- - - - - Guillermo Moyna, PhD Department of Chemistry & Biochemistry University of the Sciences in Philadelphia 600 South 43rd Street Philadelphia, PA 19104-4495
"The only existing things are atoms and empty space. All else is mere opinion" - Democritus, 370 B.C.
Office: Grifith Hall 360 Phone: (215) 596-8526 Fax: (215) 596-8543 e-mail: g.moyna@usip.edu WWW: http://tonga.usip.edu/gmoyna/index.html http://www.usip.edu/chemistry/faculty/moyna.asp
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