diff options
| author | Daniel Hartmeier <dhartmei@cvs.openbsd.org> | 2002-06-07 21:25:37 +0000 |
|---|---|---|
| committer | Daniel Hartmeier <dhartmei@cvs.openbsd.org> | 2002-06-07 21:25:37 +0000 |
| commit | 87739f251b80651d7bf5e456e0dc04696a638f9b (patch) | |
| tree | 8a36dbdfa9d45f950ffcc830260b168b4eb45f94 /share/man | |
| parent | 1001fef5168442fee0d557002fbdd7ba550de37a (diff) | |
Add "(max <number>)" option for "keep/modulate state" to limit the number
of concurrent connections a rule can create. ok frantzen@
Diffstat (limited to 'share/man')
| -rw-r--r-- | share/man/man5/pf.conf.5 | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/share/man/man5/pf.conf.5 b/share/man/man5/pf.conf.5 index 53bb1bb36a7..6fe407392bf 100644 --- a/share/man/man5/pf.conf.5 +++ b/share/man/man5/pf.conf.5 @@ -1,4 +1,4 @@ -.\" $OpenBSD: pf.conf.5,v 1.48 2002/06/07 19:41:23 henning Exp $ +.\" $OpenBSD: pf.conf.5,v 1.49 2002/06/07 21:25:36 dhartmei Exp $ .\" .\" Copyright (c) 2001, Daniel Hartmeier .\" All rights reserved. @@ -53,7 +53,7 @@ rule = action ( "in" | "out" ) hosts [ user ] [ group ] [ flags ] [ icmp-type | ipv6-icmp-type ] - [ "keep state" ] [ "modulate state" ] + [ ( "keep" | "modulate" ) "state" [ "(" "max" number ")" ] ] [ "fragment" ] [ "no-df" ] [ "min-ttl" number ] [ "max-mss" number ] [ "allow-opts" ] [ "label" string ] . @@ -461,6 +461,11 @@ see .Xr nat.conf 5 .Pc implicitly create state for connections. +.Pp +The "(max <number>)" option can be used to limit the number of concurrent +states a rule can create to the specified maximum. +When this limit is reached, further packets matching the rule that would +create state are dropped, until existing states time out. .Sh STATE MODULATION Much of the security derived from TCP is attributable to how well the initial sequence numbers (ISNs) are chosen. |