IPFire - An open source firewall solution

IPFire is a server distribution with intended to use as a firewall. It focuses on flexibility, and scales from small to middle sized business networks and home networks. Beginning with a small firewall system of a few megabytes, it is possible to run IPFire as a file server or VPN gateway for staff, branches or customers. This modularity means that yor version of IPFire runs with exactly what you require and nothing more.