From: "Gáspár Lajos" <swifty@freemail.hu>
To: Pat Riehecky <prieheck@iwu.edu>
Cc: netfilter@lists.netfilter.org
Subject: Re: Conntrack rule timeout problem
Date: Wed, 23 May 2007 14:47:29 +0200 [thread overview]
Message-ID: <465437E1.9030600@freemail.hu> (raw)
In-Reply-To: <1179765250.12001.18.camel@thales.lan>
Hi,
Pat Riehecky írta:
> I seem to be capturing way more packets than I intend (or even expect!).
> I am running squid and have the firewall rules below running on it. For
> some reason I am capturing hundreds of packets that I don't think should
> be caught.
>
Maybe someone is scanning you....
> I have increased the timeouts in /proc/ (via sysctl) to fix this, but no
> dice. Anyone have any idea why the sample packet below would be
> captured? It is getting picked up by either the
> -A INPUT -p tcp -m tcp ! --syn -m conntrack --ctstate INVALID -j DROP
> but sometimes the
> -A INPUT -p tcp -m tcp ! --syn -m state --state NEW -j DROP
>
Take a look on nmap...
> The packet looks to have been requested by squid, it is coming on port
> 80... I also seem to be having the same behavior on the squid side
> where the FIN/ACK packets are being caught by the conntrack rule...
>
> I know I have something wrong, just what exactly is eluding me...
>
> Any help would be helpful!
>
Swifty
next prev parent reply other threads:[~2007-05-23 12:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-21 16:34 Conntrack rule timeout problem Pat Riehecky
2007-05-23 12:47 ` Gáspár Lajos [this message]
2007-05-23 13:42 ` Pat Riehecky
2007-05-23 16:27 ` Gáspár Lajos
2007-05-24 14:16 ` Pat Riehecky
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