ferm(1) on Linux
The text 8ba56d86bbea, as Debian 11 (Bullseye) shipped it.
a firewall rule parser for linux
Flags it lists
-
--def -
--domain -
--fast -
--flush -
--help -
--interactive -
--lines -
--noexec -
--remote -
--shell -
--slow -
--timeout -
--version