Mason 0.13.90 developer’s release. Mason is a tool that interactively builds a firewall using Linux’ ipfwadm or ipchains firewalling.
You can download it from the following link: https://packetstormsecurity.com/files/download/16044/mason-0.13.0.90.tar.gz
Source: https://packetstormsecurity.com/files/16044/mason-0.13.0.90.tar.gz.html