> > Or ipchains is already loaded and so you can't load iptables.
> >
> > lsmod
> 
> Ahhhh yeah ipchain *is* loaded (didn't know you couldn't have them both
> loaded). hmmm so does that mean that I *do* have to rewrite all my
> ipchain rules or can I run ipchain rules under iptables?? I seem to
> remember someone somewhere saying that there was backward compatbility

I believe (and somebody correct me if I'm wrong) that by default the RH kernels
have both ipchains and ipfwadm compatibility support builtin.  I would recommend
rewriting your rules any ways.

rmmod ipchains
insmod iptables