On Tue, Mar 25, 2003 at 11:21:34AM +0100, Kim Jensen wrote: > services or external services where the destination port is above 1024 can > then easily be marked and tracked (at least in theory, I haven't played with This does not help, because often they use port 80 or 25 or so. But e-mule is using some fixed ports (4426 or similar?) as control connection (like passive ftp). A module that is analysing that control traffic (similar to ftp) and determine the ports that are then used by the transfer connections should be able to mark all e-mule packets; but I have not seen a implementation of this yet. However there are sources of P2P servers/clients available, and it should be possible to implement such a tool or I should better say different tools for different P2P-software ;-(. (and maybe not for all kind of that software). I agree with you, it would be fine to have such a tool. Matthias