From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gavin Hamill <gdh@acentral.co.uk>
Subject: Re: How to log what is drop
Date: Thu, 8 Jul 2004 08:44:07 +0100
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On Thursday 08 July 2004 08:30, IZEM Farid wrote:
> Hi all,
>
> Just a Simple question.
>
> How do i log what is being rejected or drop by my Firewall.
>
> I configure my syslog.conf like this:
> 	kern.*                                                  /var/log/kernel
>
> And I had the following rule:
> 	Iptables -A FORWARD -j LOG
>
> It seems that all connections is logged so it is very difficult to read the
> log.

Firstly, do you actually have DROP statements in your ruleset? If so, the LOG 
statement should appear JUST BEFORE the block of DROP statements. Since 
ACCEPT or DROP are one-way-streets for packets, you want to LOG just before 
they get DROPped, but not log any of the ACCEPTed packets.

Cheers,
Gavin.