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PFILCTL(8) |
FreeBSD System Manager's Manual |
PFILCTL(8) |
pfilctl —
pfil(9) control utility
pfilctl |
link ⟨-i |
-o ⟩ [-a ]
hook head |
pfilctl |
unlink ⟨-i |
-o ⟩ hook
head |
The pfilctl utility is intended to view and change
configuration of the
pfil(9)
packet filtering hooks and filters on them.
heads
- List available packet filtering points.
hooks
- List available packet filters.
link
⟨-i | -o ⟩
[-a ] hook
head
- Link hook to head. With the
-i flag the hook will be connected as input and
with -o as output hook. At least one of
-i or -o is required. By
default pfilctl will prepend the hook in front of
other hooks if any present: new hook will be as close to the wire as
possible, so that on input it will be the first filter and on output it
will be the last. Adding the -a flag switches to
appending new hook instead of prepending.
unlink
⟨-i | -o ⟩
hook head
- Unlink hook on head. At least
one of
-i or -o is
required. With the -i flag the hook will be
removed from the input list of hooks and with -o
on output list.
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