blacklistd(8) on FreeBSD
The text 065f4eca3e66, as FreeBSD 11.3-RELEASE, FreeBSD 11.2-RELEASE, FreeBSD 11.1-RELEASE shipped it.
block and release ports on demand to avoid DoS abuse
Flags it lists
-
-C -
-D -
-P -
-R -
-c -
-d -
-f -
-r -
-s -
-t -
-v