intercepting Bit-Torrent packets??

[drocpdp]

Ok. here's the MAIN problem. My roomate and I share a router. He downloads from Bit-Torrent (I believe e-mule) constantly. So I'm left with a 56k connection.

I was wondering if there's a way to examine each packet coming in/going out, examining if it is indeed a Bit-torrent packet, and limiting it or putting it in a queue somehow and letting other traffic through. So that way, I can at least have half of the bandwidth.

Re: ethics, We talked, and he agreed it's feasible.

How would I go about doing this?

This started as an "F-U" to my roomate, but actually, this might be fun, and I look forward to progressing on this...

p.s. He has Windows Media Home XP, i have Windows XP Home, I also have a separate (slow) Linux RH FC6 box connected... We have cable isp...

[ZakaqerE]

If he's using windows, he ,IMHO should get BitComet. For linux, Ktorrent. Both of these BT clients are top of the line and include bandwidth capping features. Just using one of these clients will make a bandwidth throttling router more trouble than it's worth.