I wasn't too sure where to put this, so I guess the network area is as good as any.

Anyway, does anyone know what ports 4000, 4001 and 4003 are for?
Last night my cable modem went mental and I couldn't get any internet access.
My zonealarm pro log showed an entry for these ports from the same ip address 210.51.226.250.
Any ideas?
I've tried searching for any info on these ports and nobody seems to publish anything on them.
Now I a bit stuck.