[122197] in North American Network Operators' Group
Re: about udp 80,8080,0
daemon@ATHENA.MIT.EDU (Jeffrey Lyon)
Tue Feb 9 13:01:55 2010
In-Reply-To: <4B719518.8000300@csuohio.edu>
Date: Tue, 9 Feb 2010 13:01:19 -0500
From: Jeffrey Lyon <jeffrey.lyon@blacklotus.net>
To: Michael Holstein <michael.holstein@csuohio.edu>
Cc: =?EUC-KR?B?w9bBvsjG?= <eversuede@chol.com>, nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
If you don't need UDP, disallow it to your entire network or to the
/xx where such is applicable. We have basic filters like this with our
carriers upstream and have prevented several Gbps of traffic from ever
hitting our filters as a result.
Jeff
2010/2/9 Michael Holstein <michael.holstein@csuohio.edu>:
>
>> =A0 =A0What does application use 8.8080,0 port for the proper purpose?
>>
>>
>
> I've seen newer BitTorrent clients do this (UDP is supported, and the
> port can be arbitrary).
>
>
> Cheers,
>
> Michael Holstein
> Cleveland State University
>
>
--=20
Jeffrey Lyon, Leadership Team
jeffrey.lyon@blacklotus.net | http://www.blacklotus.net
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