If your ever wondering what those open ports lead to, these sites will give you an idea.
You can check your open ports in Network Utility>port scan > it should load the address of your router or modem, you may have to add your computer address. 192.168.0.1 -192.168.0.(2) 3 4 5 --10.0.0.1 -10.0.0.(2) 3 4 5 6 or not.
Some software programs use open ports to check your registration # Like MS Office
You'll find printer ports and html ports open as well. if you have a VoIP phone it should run over the Http port 80
http://en.wikipedia.org/wiki/List_of_TCP_a...ports:_1_-_1023http://www.networksorcery.com/enp/protocol/ip/ports00000.htm