Linux IPsec Gateways Using Free SWan

Open source projects are now refined enough that they provide us with the most configurable and reliable solutions of a vast array of refined products. Recently I was told to implement a VPN solution for my company and keep costs down. Since my company is one of the 'survivors' of the dot-com world, this definitely means no highly expensive commercial products (those of us left have a budget.) It also means we don't want to cut off our own head with an open-source solution that doesn't live up to our specifications.