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I want to block p2p and torrent connection without any firewall or server-side software installation.

Most of all it is FREE.


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Why is this tagged with thin-client? If you're not blocking at the firewall or the server, are you looking for a client solution? More information about the machines generating the P2P and why you don't have the ability to block at the appropriate points in the network would be helpful. – Kevin Kuphal Jul 22 '09 at 13:23

You probably have a pair of scissors somewhere; that'll block peer-to-peer software without costing anything, installing a firewall, or installing any software on a server.

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You are right.., and that's the first option..., and this is only my second option..., because of cost. Thanks buddy. – Nathaniel Varona Jul 22 '09 at 10:57

Is this for a single computer, or an entire network? If its a single computer, configure the windows firewall manually. If its a network, configure the windows firewall via GPO. (IF you are running AD, that is)

You could also look into filtering as well.

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+1 - this was my answer. Monitor the network traffic, determine ports and executables used for P2P, and make sure the Windows Firewall is set to block those through GPO. – Jeff Miles Jul 22 '09 at 13:54

WinXP SP2 and higher has a built-in firewall. That software can be configured to block all kinds of things, and it is already paid for.

Take a look at the configure and edit your question to be more specific, I'm sure you will get more specific answers

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Try to decrease halfopen connections limit to minimum (i.e 1 or 2) it'll make p2p almost unusable, but also will cost you slow browsing speed

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I would reccomend going with a P2P IP-Filter list. They're freely available. One in particular that I use is from:

And it's free. Migrate that to each users hosts file and flush the machines dns:

Start -> Run - > cmd ipconfig /flushdns

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Get a Linksys WRT54G and put a 3rd party firmware on it (DD-WRT2.4+) that has bandwidth management functions. Then you can restrict bandwidth by port and/or ip address.

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