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From: Ralf Spenneberg <lists@spenneberg.org>
To: Pete Zieba <pete_1024@yahoo.com>
Cc: Netfilter <netfilter@lists.netfilter.org>
Subject: Re: Using a remote internet connection.
Date: 08 Oct 2003 11:45:22 +0200	[thread overview]
Message-ID: <1065606321.1671.99.camel@kermit> (raw)
In-Reply-To: <20031004003050.57956.qmail@web12701.mail.yahoo.com>

Am Sam, 2003-10-04 um 02.30 schrieb Pete Zieba:
> I then do the following:
> I reconfig my workstation to use his ISP's nameserver.
> I can now ping domains (yahoo, etc.)
> I CANNOT get to MOST websites. (msn.com is one of my
> few successes)
> 
> *Note that everything works fine if I try to get to
> websites using "links" as a browser in the console of
> my linux box. It is only machines on my LAN side that
> have problems.
You might have some problems with the PMTU-Discovery since you probably
have several different MTUs on the Path and firewalling in between.
Either get the firewalls to allow ICMP-frag-needed through or you might
want to try the 
TCPMSS target to confine TCP-packet to a maximum size, like:
-j TCPMSS --set-mss 1300 or -j TCPMSS --clamp-mss-to-pmtu
I do not know if 1300 would be the best value but at least it should get
the connection working if thats the problem.

Cheers,

Ralf
-- 
Ralf Spenneberg
RHCE, RHCX

Book: Intrusion Detection für Linux Server   http://www.spenneberg.com
IPsec-Howto				     http://www.ipsec-howto.org
Honeynet Project Mirror:                     http://honeynet.spenneberg.org


      reply	other threads:[~2003-10-08  9:45 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-10-04  0:30 Using a remote internet connection Pete Zieba
2003-10-08  9:45 ` Ralf Spenneberg [this message]

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