This is hlfl.
hlfl stands for "High Level Firewall Language". It permits writing firewalling rules using a high level language, and transforms them into rules for real softwares, like ipfilter, ipchains or cisco rules.
You could make contact with the developers by subscribing to <hlfl@hlfl.org>. There is also an announce ML at <hlfl-announce@hlfl.org>. These lists are managed by majordomo (write to <majordomo@hlfl.org> with "help" in the body of your mail).