During the DOS attacks lately, hpguru suggested the use of honey pots.
I found it interesting not just to block all unknown incoming traffic, but to listen on certain ports.
Unfortunately i couldn't find any program (well, maybe one) that did the job nicely:
BackOfficer Friendly, NetGuard, HoneyPot 1.3 are either fixed to a view ports or crashing permanently.
Specter seems to be quite nice, but it's a 900$ app and not available elsewhere
So i sticked with NukeNabber and learned that all that hammering at my port 80 is Nimda!
NukeNabber has a lot of options and can listen to upto 50 ports.
The drawback is, that it produces Winsock errors now and then, and that it can only log HTTP traffic.
Does anyone of you know about a nice port listener?