How to block unnecessary port or allow important port?
It is a students hostel network, and our ISP is offer us a low bandwidth. So i wish to block all unimportant port to disable they use some program for download.
Is this the port that cannot be block?
http://www.webopedia.com/quick_ref/portnumbers.asp
How to block unnecessary port or allow important port?
I want to block most of the port because my ISP offer my network small bandwidth 13Mbps for 480 clients network. I want to block all services except web suffering purpose for the network.