Re: [SLUG] Send but not receive problem

From: Russell Hires (rhires@earthlink.net)
Date: Sat Aug 24 2002 - 08:39:21 EDT


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> > What could be causing this problem?
>
> What are the three machines' OS(es)? What are the three IP addresses?
All three are running Debian woody, but for different architectures. The one
I'm having problems with is a Quadra 700 (m68k), the P133 works like a charm,
and my firewall machine is PPC.

I did an apt-get dist-upgrade for the Quadra to upgrade from potato to woody,
but it stalled out, and would never restart. So I did an apt-get clean, and
then it restarted the whole dist-upgrade process. Even though it would stop
downloading, aka get stuck, I could just CTRL-C and be able to restart the
dist-upgrade process from where it left off. So I finally got all of that,
but the other problems continue.

This is the output of tcpdump when I try to ping debian's servers from the
Quadra.
poet:/home/rusty# tcpdump
tcpdump: listening on ppp0
08:35:32.660000 4.62.115.139.63452 > 4.2.2.1.domain: 42438+ A? debian.org.
(28)
08:35:32.710000 4.2.2.1.domain > 4.62.115.139.63452: 42438 1/8/5 A
192.25.206.10 (301) (DF)
 
Ahhhh...the joys of looking at tcpdump on a quiet network! (mine) I volunteer
at a school where there's tons of traffic, and I could never figure out how
to isolate what I wanted, or even how to figure out what I wanted.

Thanks!

Russell

> Could this be a reverse DNS problem (can the non-receiving machine
> successfully telnet/SSH into the firewall machine)? Running a tool such
> as tcpdump on the firewall's external interface, are the non-receiving
> machine's packets being sent beyond the firewall? Are the responding
> packets coming back to the external interface of the firewall? You
> might also need to post your firewall rules to get good answers.
>
> --ronan

- --
Linux -- the OS for the Renaissance Man
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