diff options
Diffstat (limited to 'share/man/man5/pf.conf.5')
| -rw-r--r-- | share/man/man5/pf.conf.5 | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/share/man/man5/pf.conf.5 b/share/man/man5/pf.conf.5 index a9ae823257a4..edaa160dddf2 100644 --- a/share/man/man5/pf.conf.5 +++ b/share/man/man5/pf.conf.5 @@ -27,7 +27,7 @@ .\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd July 30, 2025 +.Dd August 20, 2025 .Dt PF.CONF 5 .Os .Sh NAME @@ -267,6 +267,10 @@ which corresponds to the connection state. Each packet which matches this state will reset the TTL. Tuning these values may improve the performance of the firewall at the risk of dropping valid idle connections. +Alternatively, these values may be adjusted collectively +in a manner suitable for a specific environment using +.Cm set optimization +(see above). .Pp .Bl -tag -width xxxx -compact .It Ar tcp.first @@ -274,6 +278,9 @@ The state after the first packet. .It Ar tcp.opening The state after the second packet but before both endpoints have acknowledged the connection. +.It Ar tcp.tsdiff +Maximum allowed time difference between RFC 1323 compliant packet timestamps. +30 seconds by default. .It Ar tcp.established The fully established state. .It Ar tcp.closing @@ -2470,7 +2477,13 @@ NAT address and port. This feature implements "full-cone" NAT behavior. .El .Pp -Additionally, the +Additionally, options +.Ar sticky-address +and +.Ar prefer-ipv6-nexthop +can be specified to influence how IP addresses selected from pools. +.Pp +The .Ar sticky-address option can be specified to help ensure that multiple connections from the same source are mapped to the same redirection address. @@ -2486,6 +2499,14 @@ beyond the lifetime of the states, increase the global options with See .Sx STATEFUL TRACKING OPTIONS for more ways to control the source tracking. +.Pp +The +.Ar prefer-ipv6-nexthop +option allows for IPv6 addresses to be used as the nexthop +for IPv4 packets routed with the +.Ar route-to +rule option. If a table is used with IPv4 and IPv6 addresses, first the IPv6 addresses +will be used in round-robin fashion, then IPv4 addresses. .Sh STATE MODULATION Much of the security derived from TCP is attributable to how well the initial sequence numbers (ISNs) are chosen. @@ -3566,7 +3587,7 @@ fragmentation = [ "fragment reassemble" ] timeout-list = timeout [ [ "," ] timeout-list ] timeout = ( "tcp.first" | "tcp.opening" | "tcp.established" | - "tcp.closing" | "tcp.finwait" | "tcp.closed" | + "tcp.closing" | "tcp.finwait" | "tcp.closed" | "tcp.tsdiff" | "sctp.first" | "sctp.opening" | "sctp.established" | "sctp.closing" | "sctp.closed" | "udp.first" | "udp.single" | "udp.multiple" | @@ -3580,7 +3601,7 @@ limit-item = ( "states" | "frags" | "src-nodes" ) number pooltype = ( "bitmask" | "random" | "source-hash" [ ( hex-key | string-key ) ] | - "round-robin" ) [ sticky-address ] + "round-robin" ) [ sticky-address | prefer-ipv6-nexthop ] subqueue = string | "{" queue-list "}" queue-list = string [ [ "," ] string ] |