tcp_masq_openfw(8) on Linux
The text 39ae39962d0b, as Debian 4.0 (Etch), Debian 3.1 (Sarge), Debian 3.0 (Woody), Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it. The page shows this text now.
Open a set of hosts for free masquerading.