From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jason Opperisano <opie@817west.com>
Subject: Re: conntrack has problems with syn-ack-psh set
Date: Sat, 1 Jan 2005 12:50:16 -0500
Message-ID: <20050101175016.GA10480@bender.817west.com>
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On Mon, Dec 27, 2004 at 04:59:52PM -0800, Shaun Savage wrote:
> I am have a problem getting iptables to work with a bain dead linksys 
> printserver.  After is receives a syn packet it send a syn-ack-psh 
> packet.  Is psh allowed here?  The conntrack can't find a match and the 
>  packet is INVALID.  NO connection.

SYN-ACK-PSH is not a valid response to a SYN packet.  you will never
get iptables (or any stateful firewall) to recognize this as a valid
connection.  you will have to allow this communication without relying on
"-m state."

-j