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BitTorrent Detecting

By jlbpotter ·
Can someone tell me something that I can use to detect BitTorrent packets? I think I have some P2P file sharing on my network and I am trying to locate the source of it. Can you tell me what to look for and what I can use to find it? Thanks in advance.

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by Joseph Moore In reply to BitTorrent Detecting

TCP ports 6881-6889 are the default ones used with BitTorrent. So if you could sniff your network, you could do so, filter for these ports, and see who is using the traffic.
Also if you have a firewall, see if it logs the inbound traffic on these ports.
It just depends on your network. If you have only hubs, then running the sniffer would be easy. If it's a switched environment, then you'll need to setup a span port on the switch to then connect a machine running the sniffer program (like Ethereal) to do the sniff.

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What if they use other ports?

by adnivara In reply to

Hi, i'm trying to curb illegal use of my bandwidth in my network by people using bittorent. How would I detect if a user is using Bittorent if he changes the port and/or encrypts the data?

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