iptables problem

**groundzero** · 06-05-2002, 07:11 PM

eth0 = 216.x.x.x real connection to the internet. Working
eth1 = 192.168.0.1 gate to lan / win word
I am trying to get iptables to work on slack8
I used the script from the PET section on sharing.

Code:

#!/bin/bash 
# Load the NAT module (this pulls in all the others). 
/sbin/modprobe iptable_nat 
/sbin/modprobe ip_conntrack_ftp 
/sbin/modprobe ip_nat_ftp 


# MASQUERADE the connection (-j MASQUERADE). 
/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE 
# Turn on IP forwarding 
echo 1 &gt; /proc/sys/net/ipv4/ip_forward

Thats script gets called at boot time by rc.local.
After I reboot i do iptables -L and get error see below.

Code:

root@serverx:~# iptables -L                         
iptables v1.2.2: can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
root@serverx:~#

Any ideas. I am coming off of ipchains.
Thanx fellas

**ndogg** · 06-05-2002, 07:19 PM

/sbin/modprobe ip_tables

**groundzero** · 06-05-2002, 07:28 PM

ran that same error.
added that to my script to call at boot time and same error.
Anymore ideas.

**andrzej** · 06-05-2002, 10:07 PM

Are you sure that iptables support is compiled into your kernel ?

**groundzero** · 06-06-2002, 01:47 PM

Not sure.
I installed it via pkgtool off of the slack install cd.
How can i check.

**Schotty** · 06-06-2002, 02:14 PM

[quote author=groundzero link=board=4;threadid=3614;start=0#36768

Code:

Perhaps iptables or your kernel needs to be upgraded.
root@serverx:~#

That was what made me realize I needed it compiled in properly. Recompile with the proper options included. AFAIK, these are not options that can be made as modules, just turned on/off in the kernel.