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103 posts

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Topic # 87942 11-Aug-2011 00:00
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Just messing with a script on our linux firewall to watch / block P2P traffic.

Seems like bittorrent makes a gob load of UDP connections when running, i downloaded ubuntu 10.10 and got about 600 UDP connections.....

So If i count UDP connections by NATted IP address, i'll see...

192.168.1.10 = 10
192.168.1.11 = 600

Skype also makes lots of UDP connections, but nothing like what bittorrent does from what I can see.

I may just visit the user at 192.168.1.11 and check that their PC is not being naughty.....

Thoughts from another geek please?

Cheers
Mac
 

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Uber Geek
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  Reply # 504901 11-Aug-2011 11:24
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Most peers and seeds still use TCP.

However uTorrent's uTP uses UDP

http://www.utorrent.com/help/documentation/utp


http://en.wikipedia.org/wiki/Micro_Transport_Protocol

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  Reply # 504931 11-Aug-2011 12:00
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The most effective (but certainly not foolproof) way at present is to try and block access to trackers.

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  Reply # 504963 11-Aug-2011 13:15
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Some clients will also use IPv6 and/or try to setup a toredo tunnel, so watch for that too.

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