port 3040

What is port 3040 used for? I have someone always connecting to it, but I don't know what it is for. I'm running a web server, so I don't want to inhibit that but I don't like not knowing what's going on. Also port 3566? I looked up what it may be and it says something like tomato springs or something?!?! Thanks in advance for the help! David Kassa