You can try
Little Snitch. Also, you may want to slam down a firewall with that many ports being open.
After having checked my ports list, I have found:
TCP 48002 Nimbus Hub
TCP 48003 Nimbus Gateway
TCP 54320 Orifice 2000 (TCP)
--Does that mean it could be a hardware related issue?
Oh, and a few more fun ports I found:
TCP 17 Quote of the Day
TCP 70 Gopher
TCP 79 Finger
TCP 148 Jargon
TCP 346 Zebra server
TCP 347 Fatmen Server
TCP 358 Shrinkwrap
TCP 367 MortgageWare
TCP 402 Genie Protocol
TCP 568 microsoft shuttle
TCP 666 doom Id Software
TCP 751 pump
TCP 998 busboy
TCP 1201 Nucleus Sand
TCP 1362 TimeFlies
TCP 1505 Funk Software Inc.
TCP 1786 funk-logger
TCP 1787 funk-license
TCP 2619 bruce
etc...
