nanog mailing list archives

Re: about udp 80,8080,0


From: Jeffrey Lyon <jeffrey.lyon () blacklotus net>
Date: Tue, 9 Feb 2010 13:01:19 -0500

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>:

   What 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





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