Simple-VPN: Simple IPsec Configuration
Source: Columbia University
The IPsec protocol promised easy, ubiquitous encryption. That has never happened. For the most part, IPsec usage is confined to VPNs for road warriors, largely due to needless configuration complexity and incompatible implementations. The authors have designed a simple VPN configuration language that hides the unwanted complexities. Virtually no options are necessary or possible. The administrator specifies the absolute minimum of information: the authorized hosts, their operating systems, and a little about the network topology; everything else, including certificate generation, is automatic. The implementation includes a multitarget compiler, which generates implementation specific configuration files for three different platforms; others are easy to add.