Like always, whenever I find a link that has quality information I always post it here for others. This one has a ton of good info, especially links to sites that give out good info on Trojans and the ports they listen on. Additionally, they even give registry entries to look for when particular Trojans infect your system.

Here is the table of contents:
FAQ on Port Probes
Trojan Ports Lists
Other Dangerous Ports
NET SEND on Windows
Protecting Yourself
Security Sites and Guidelines
Windows Security
Macintosh Security
Linux Security
Scanning Services
Software to List Open Ports
Security Software
Windows Security Software
Macintosh Security Software
Linux Security Software
Security Hardware
Articles on Security
How Can You Contribute?
Help I'm Being Hacked
Firewall Books (including free book)
Questions


http://www.chebucto.ns.ca/~rakerman/...ort-table.html

Enjoy!