Re: eth1 messing up eth0 and routing question

[bedlam@alumni.rice.edu]

> On 5 Sep 2001 08:29:37 -0700, bedlam@alumni.rice.edu wrote:
> 
> >I can ping outside and inside networks from the router, and I can ping the LAN 
> side of the router from a local computer, but I can't ping outside from the 
> local computer.
> 
> You need SNAT ("ip masquerading") like this:
> 
>     if [ -n "$EXTERNAL" ]; then
>         for ext in $EXTERNAL; do
>             ipnm_cache $ext
>             $IPTABLES -t nat -A POSTROUTING -o $ext -j SNAT --to $IPOFIF
>         done
>     fi
> 
> $EXTERNAL is the set of external interfaces you have, "ipnm_cache" precomputes 
> the IP address and netmask for the respective external interface (the IP address 
> gets stored in $IPOFIF.)

Ok, I've read conflicting information on this subject, and neither solution has worked correctly.  I can't use this solution becuase I don't seem to have ipnm_cache.  I tried to follow the NAT-HOWTO which says to use these commands:

#> modprobe iptable_nat
#> iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

at which point I get the message:

iptables: No chain/target/match by that name

Help?




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