Re: ICMP, SYN, ACK flooding

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On Friday 05 December 2003 10:11 pm, Robert Gil wrote:

> In this script for iptables i cant seem to get the icmp flood protection
> to work. Im limiting the icmp to 1/s and a burst of 4... (under ping of
> death), same goes for syn flood allthough im not quite sure how to test
> syn/ack/fin/xmas flooding. And how can i go about closing all ports to
> syn packets except the ones listed so i dont have the responding.
> Perhaps i have some things in the wrong order. Any help would be great.

What is the machine which this script is running on supposed to do?

You have a strange mixture of mostly INPUT rules, with just a single FORWARD 
rule, so I wonder whether you are trying to use netfilter to protect the 
machine itself, or whether it is a Firewall protecting other machines on a 
network?

Antony.

-- 
Perfection in design is achieved not when there is nothing left to add, but 
rather when there is nothing left to take away.

 - Antoine de Saint-Exupery

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