i need to know what all proxies are open in my college as we have to try diff ones to cnnect to the net .. what software can i use ?? what exactly is a proxy and a port ?? and i have a hub or a switch in my room which connects two floors in LAN .. what else can it do .. some comp guy came a month back and said that the thing in my room is a switch coz it has an ip ?? it is just a box on the wall which has rows of wires connected systematiclly .. the same wire i use to plug into the lan ... can u explain wat exactly this is ??