Strange connection problems.

Ryan Belcher Ryanb at
Wed Apr 13 01:58:11 CEST 2005


Thank you!  That cleared things up perfectly.  ppp0 had the MTU set for 1492; however, none of the other interfaces did (including eth1 which I failed to mention was actually the path to ppp0).  You are both gentlemen and scholars.

Thanks again!


-----Original Message-----
From: Jason Opperisano [mailto:opie at]
Sent: Monday, April 11, 2005 6:04 PM
To: netfilter at
Subject: Re: Strange connection problems.

On Fri, Apr 08, 2005 at 05:14:09PM -0400, Ryan Belcher wrote:
> Hi All,
> Below I've posted my FW config.  It's handling 3 interfaces.  ppp0, eth0, an ath0.
> It's on Linux kernel version 2.6.10.
> Pretty much everything works as I expect except for a strange issue with certain websites while trying to connect from clients within my network.  For example,, SSL logins, and a few others.  If you want to poke at this configuration, penny-arcade will appear to begin connection but after the SYN, ACK, then HTTP GET sequence, the HTTP response never gets here (according to Ethereal anyways).  If I try connecting from the actual firewalling box itself, it works fine.
> Does anyone have any ideas?

sounds like the classic description of an MTU issue.


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 out to destroy his brother's reputation. Now I'm going to go back inside
 my motel room where I'm going to have freaky sex with my prostitute
 with whom I still have another 45 minutes."
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