*BSD News Article 32969


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From: lafollet@astro.ocis.temple.edu (Paul Lafollette)
Newsgroups: comp.os.386bsd.questions
Subject: SLIP and routing
Date: 19 Jul 1994 17:53:13 GMT
Organization: Temple University, Academic Computer Services
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Message-ID: <30h3u9$gjj@cronkite.ocis.temple.edu>
NNTP-Posting-Host: astro.ocis.temple.edu
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Hi,
I have managed to semi-successfully get SLIP working between the
FreeBSD system at home and the one in my office at work.  Semi-successfully
because, while I can telnet and ftp without probelm between home machine
and office machine... i can't get to any sites beyond my office... i.e.
the rest of the campus or the internet beyond.  

I think that the problem is that office machine and home machine know about
each other... but anything beyond my office machine has no way of knowing that
my office machine has a route to my home machine... so if i ping, say, another
site... my packets get to the distant site, but distant site has no idea of
how to send packets back.

The question is... is it possible to rectify this problem by changing things
on only the machines that i control (office and home) wihtout having to get
messed up in changing anything on other machines.  In a bit more detail...

Our campus net consists of several subnets.  The internet numbers assigned
to my office and my home machiens are on the same sub net, which has
a netmask of 0xffffff00 (which may be obvious to the network-literate but
isn't to me, so i include the information :)  At the moment, routed is not
running on the office mahcine.  Rather at boot it is given the one
command "route add default xxx.xxx.xxx.xxx" which has worked just fine.
(The xxx's are of course an actual address)
Both home and office machines are 486's running FreeBSD.  

Anyway, if anyone has any advice or can tell me that what i want to do 
is impossible, or whatever, I would greatly appreciate it.
The phrase "proxy arp"  keeps banging around in the back of my consciousness
as regards this problem... does it have any applicability?

Thanks in advance.  

Paul


Paul LaFollette
CIS Dept.
Temple University
Philadelphia, PA 19119
lafollet@andante.cis.temple.edu
lafolet@astro.ocis.temple.edu