Linux Proxy Server for Household Network

Pilchie writes "Hey, I live in a house with seven other students, we have an extra phone line for connectivity, and we are running a 10baseT network. I am configured as a proxy server for the network in Win98 (shudder!!), but would like to set something similiar up in Linux. We need: ftp, http, telnet, pop3, smtp mapping, nntp mapping, and socks 5 support. Is this possible? It also needs to be fairly simple, as I am not a Linux guru. I am running RedHat 5.0, with Kernel 2.1.122 "