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Re: ICMP pokes holes in firewalls...
From: H D Moore <hdm () digitaloffense net>, (by way of Lucio <lucio () pixel it>)
Date: Fri, 26 Sep 2003 11:54:57 +0000

Only if these systems are running kernel version 2.2, the 2.4 NAT system
has been rewritten and is not vulnerable.

On Friday 26 September 2003 04:55 am, Lucio wrote:
This also applies to Linux NAT gateways.

I'm rellay not an expert in building a firewall with a Linux box, but
I've tried twice and now I have two customers happy of their
unexpensive Linux based firewall. These firewalls offer also NAT
functionality to the respective LANs they protect and use iptables
rules with stateful inspection to filter the packets. Both customers
have a DNS in between the linux firewall and the ISP's router. Are they
vulnerable to any of those attacks?

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