Please help...

[Sam Loy <sampaw@mac.com>]

If I sound a little frustrated, keep in mind I'm now on week 2 of my 
attempt to setup linux as a firewall router on my home network. I have 
installed 3 different versions of linux, read hundreds of pages, tried 
at least 5 different configurations 20 times each....but still I cannot 
seem to share my dsl connection with my other machines.

I have 2 NICs in a Linux 9 installation. One card connects to my lan 
with a static ip of 192.168.1.1. The other connects to my DSL provider 
which dynamically allocates the ip.

I did this:

modprobe iptable_nat

# In the NAT table (-t nat), Append a rule (-A) after routing
# (POSTROUTING) for all packets going out ppp0 (-o ppp0) which says to
# MASQUERADE the connection (-j MASQUERADE).
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE

# Turn on IP forwarding
echo 1 > /proc/sys/net/ipv4/ip_forward


It does not work.  When I do a iptables -t nat  -n -L
It displays:

MASQUERADE all -- 0.0.0.0/0 		0.0.0.0/0

once for each time I've executed the above command. (now 7 times). I'm 
sorry, but this doesn't seem right. 0 to 0? don't think so. So I try 
different -o values - but always get the same.

Don't get it - Do I need to manually add a route? Completely befuttled 
and ready to throw in the towell.

Sam