iptables (was port forwading)

[Carl Parrish]

On Mon, 2002-03-18 at 11:35, Patrick Fleming EA wrote:
> On 18 Mar 2002, Carl Parrish wrote:
> 
> > Okay despite the fact that iptables didn't show up when I did lsmod (I
> > guess I forgot netfilter was part of the *kernel*). It looks like
> > iptables does install on RH 7.2 So I thought well instead of rewritting
> > all my ipchains right now maybe I can just add a iptable rule to my
> > firewall script (if this is vastly wrong please let me know). So here is
> > my attempt
> > 
> > iptables -A PREROUTING -t nat -p tcp -d $IPADDR --dport $WEB_PORT \
> > 	-j DNAT --to-destination $WEBSERVER
> > 

Thanks Patrick, 
Not sure if it was that or the fact that I realized that my varible name
was $WEB_SERVER not $WEBSERVER but I'm not getting that error anymore
now I'm getting

Starting firewalling... 

/lib/modules/2.4.7-10/kernel/net/ipv4/netfilter/ip_tables.o:
init_module: Device or resource busy
/lib/modules/2.4.7-10/kernel/net/ipv4/netfilter/ip_tables.o: insmod
/lib/modules/2.4.7-10/kernel/net/ipv4/netfilter/ip_tables.o failed
/lib/modules/2.4.7-10/kernel/net/ipv4/netfilter/ip_tables.o: insmod
ip_tables failed
Hint: insmod errors can be caused by incorrect module parameters,
including invalid IO or IRQ parameters
iptables v1.2.3: can't initialize iptables table `nat': iptables who?
(do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
done


So does anyone know if this sounds as if I can simply insmod something??
or do I need to recompile my kernel?

Carl P.