Every Trojan detector/firewall that i've seen has the trojans name assigned to that port, no matter what, so any request to that port will be seen as an attempted trojan attack. A University doing a servey on port usage, for instance, or a virus software mfg. will be reported to you as a trojan. You nuke'em, they got your ip, your screwed.
Every request to a trojan port is not a trojan! If your computer is protected by up-dated virus and/or trojan protection, you really don't have to care about requests to these ports. most are just kiddies looking for running trojan servers, if you don't have one their not comming back, its really no big thing. But keep in mind some may be legit, you fry them your f@**ed.
