In a discussion on LinkedIn somebody opined that PF is "an evolved fork" of IPF.
My as-polite-as-possible correction to that was,
"$poster, It's not a fork.
Rather, an independent implementation that was initially tweaked so OpenBSD kept a mostly compatible configuration syntax.
ipf was removed https://marc.info/?l=openbsd-cvs&m=99118909527873&w=2 and the initial PF import happened later https://marc.info/?l=openbsd-cvs&m=99341215821296&w=2 (with lots of commits following)."
#pf #packetfilter #networking #openbsd #freebsd
Peter N. M. Hansteen
npub122…mm4u3
2026-10-13 07:21:02 UTC
Author Public Key
npub122zsr0gvp70hz26g9kajm7h6pcfptyxkmzdsjlwqw7qt9wxr3taqumm4u3Seen on
wss://relay.ditto.pubPublished at
2026-10-13 07:21:02 UTCEvent JSON
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"content": "In a discussion on LinkedIn somebody opined that PF is \"an evolved fork\" of IPF.\n\nMy as-polite-as-possible correction to that was, \n\n\"$poster, It's not a fork. \n\nRather, an independent implementation that was initially tweaked so OpenBSD kept a mostly compatible configuration syntax.\n\nipf was removed https://marc.info/?l=openbsd-cvs\u0026m=99118909527873\u0026w=2 and the initial PF import happened later https://marc.info/?l=openbsd-cvs\u0026m=99341215821296\u0026w=2 (with lots of commits following).\"\n\n#pf #packetfilter #networking #openbsd #freebsd",
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