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Sorry, ESP is in short supply. Please send copies of your existing ipchains
rules as well as the ip address, transport in use and OS version of the
problem machine.
I will assume that you have already used the diagnostic utilities that came
with the NICs and verified that they are properly configured and connected.
Do any other machines on the lan have trouble reaching the internet?
if so:
cat /proc/sys/net/ipv4/ip_forward
The result must be one or greater, if not you've got kernel packet
forwarding turned off (and the ipchains forward rules will never come into
play).
If result is 0
echo 1 > /proc/sys/net/ipv4/ip_forward
and try again (you should not need to reload the ipchains rules).
Note: From hearsay, I don't do Mac any longer. Depending on the MacOS in
use you may need to upgrade software. MacTCP seems to produce more problems
than the newer OpenTransport http://developer.apple.com/macos/opentransport/
Upgrade either to the most current version.
You can try WhatRoute http://crash.ihug.co.nz/~bryanc/ for Ping and
traceroute tools to help debug the difficulty. I've received reports that
UDP ping sometimes has trouble on linux systems (icmp ping is the default on
UNIX). Both ICMP and UDP ping work with my systems.
Lourdes
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