From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pascal Hambourg <pascal.mail@plouf.fr.eu.org>
Subject: Re: Connection through gateway fails in a random basis
Date: Mon, 31 Jul 2006 20:07:55 +0200
Message-ID: <44CE46FB.2020704@plouf.fr.eu.org>
References: <20060730221120.7668ee28.pedro.werneck@terra.com.br>	<44CE37FA.4050005@mailinator.com>
	<20060731145348.779b4055.pedro.werneck@terra.com.br>
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Hello,

Pedro Werneck a =E9crit :
>>
>>I can't answer your question but I can point out what looks like a=20
>>serious error in your rules -- the firewall is wide open.  You should=20
>>either change your default policy on the INPUT chain to DROP, or you=20
>>should append a rule "-A INPUT -j DROP".
>=20
> Yes... I know that. I changed it in the hope it would fix the problem

Did it ?

It seems that your connection uses PPPoE, so my first thought is the=20
well-known MTU problem. What happens if you lower the MTU of you=20
internal hosts below 1492 ?