Napster and other 'ster' filtering thru ipchains

I am faced with the need to filter Napster and for now a program called 'Scour' from my son's
internet access. Can anyone tell me where to locate a list of ports that these programs use? I also
need to start logging my son's internet use. Can you give me some pointers in enableing logging and
what to expect in log output? Your help is greatly appreciated.


Regards,
Donn Shumway
dshumway@hypercom.com
"Somebody's boring me; I think it's me."
--Dylan Thomas