Complete , simple and powerfull , all option for band control included ! But free for only 3 user . I have not found better 20' min for reading instruction, installing and setup for non expert , (3' min for expert ) !
PowerDNS - PowerDNS offers open source DNS software, services, and support.
Squid Proxy - Website Content Acceleration and Distribution. Thousands of web-sites around the Internet use Squid to drastically increase their content delivery. Squid can reduce your server load and improve delivery speeds to clients.
dnsmasq - Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server.
3proxy - 3proxy freeware proxy server for Windows and Unix. HTTP, SOCKS, FTP, POP3
Unbound - Unbound is a validating, recursive, and caching DNS resolver.
FreeProxy - Feature summary from website:* Internet connection sharing with demand dialling