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List:       l7-filter-developers
Subject:    Re: [l7-filter-developers] Bug: Filtering "skypetoskype" Protocol
From:       Matthew Strait <quadong () users ! sourceforge ! net>
Date:       2009-07-29 3:57:50
Message-ID: alpine.DEB.2.00.0907282257460.10874 () strait-desktop
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> Bug: Filtering "skypetoskype" Protocol Also Blocks "radmin" Protocol
>
> I have reported this bug first in the DD-WRT forum thread, but Eko says 
> to contact the L7 developers about this issue.
>
> Thread: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=54193
>
> When filtering the "skypetoskype" protocol, the "radmin" protocol is 
> also affected. The Radmin Viewer cannot connect to the server, resulting 
> in an error: "TCP/IP error occurred or connection closed".

This is a documented trait of the skypetoskype pattern.  See 
http://l7-filter.sourceforge.net/protocols and notice the plus sign in the 
"notes" column.

l7-filter is not intended to make decisions about dropping packets. See 
http://l7-filter.sourceforge.net/HOWTO#blocking

-Matthew

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