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Iptables Arrrghhh!
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james
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PostPosted: Thu May 23, 2002 12:10 pm    Post subject: Iptables Arrrghhh! Reply with quote

Hi All.

I am getting this message when I start iptables.

can't initalize iptables "NAT'

I turned on all the IPtables/netfilter options in the kernel, either built in or as modules.

The script is firewall.rules from the Gentoo Security How to page.

If I do "iptables -L" it shows the script loaded but the to and from say 'anywhere'.

Any help would be appreciated.

J
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klieber
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PostPosted: Thu May 23, 2002 12:16 pm    Post subject: Reply with quote

Did you remember to enable IP forwarding?

Code:
echo 1 > /proc/sys/net/ipv4/ip_forward


Also, do a lsmod and make sure iptable_nat is loaded. (unless it's compiled into your kernel)

Finally, the NAT HOWTO is a good resource.

--kurt
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iptables
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PostPosted: Thu May 23, 2002 12:49 pm    Post subject: Reply with quote

Hi Kurt.

I did the "echo 1 > /proc........thing. I don't have a /ipv4/ in the directory.

Insmod returns "no module by that name found, I think this is in the kernel.

I stumped.....

J
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id10t
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Joined: 18 May 2002
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PostPosted: Thu May 23, 2002 1:24 pm    Post subject: Reply with quote

Just get gShield - http://muse.linuxmafia.org
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james
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PostPosted: Thu May 23, 2002 2:07 pm    Post subject: iptables.... Reply with quote

Good idea.......except it sez "need properly working netfilter/iptables....."
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toxborrow
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PostPosted: Thu May 23, 2002 2:55 pm    Post subject: Reply with quote

NAT needs to be added in your kernel config, go in there and double check under the "Netfilter Configuration" (i think that's its name) in one of the Networking sections.
It's probably best to compile it into the kernel rather than as a seperate module.
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