pf.conf

$ cat /etc/pf.conf
#       $FreeBSD: src/etc/pf.conf,v 1.1.2.1 2004/09/17 18:27:14 mlaier Exp $
#       $OpenBSD: pf.conf,v 1.21 2003/09/02 20:38:44 david Exp $
#
# See pf.conf(5) and /usr/share/examples/pf for syntax and examples.
# Required order: options, normalization, queueing, translation, filtering.
# Macros and tables may be defined and used anywhere.
# Note that translation rules are first match while filter rules are last match.
# Macros: define common values, so they can be referenced and changed easily.
#ext_if="vr0"   # replace with actual external interface name i.e., dc0
ext_if="tun0"
int_if="nv0"    # replace with actual internal interface name i.e., dc1
#internal_net="10.1.1.1/8"
#external_addr="192.168.1.1"
# Tables: similar to macros, but more flexible for many addresses.
table  const { 10/8, 172.16/12, 192.168/16, 127/8, 255.255.255.255/32 }
table  { 10.0.0.0/8, !10.1.0.0/16, 192.168.0.0/24, 192.168.1.18 }
# Options: tune the behavior of pf, default values are given.
#set timeout { interval 10, frag 30 }
#set timeout { tcp.first 120, tcp.opening 30, tcp.established 86400 }
#set timeout { tcp.closing 900, tcp.finwait 45, tcp.closed 90 }
#set timeout { udp.first 60, udp.single 30, udp.multiple 60 }
#set timeout { icmp.first 20, icmp.error 10 }
#set timeout { other.first 60, other.single 30, other.multiple 60 }
#set timeout { adaptive.start 0, adaptive.end 0 }
#set limit { states 10000, frags 5000 }
#set loginterface none
#set optimization normal
#set block-policy drop
#set require-order yes
#set fingerprints "/etc/pf.os"
# Normalization: reassemble fragments and resolve or reduce traffic ambiguities.
scrub in all
# Queueing: rule-based bandwidth control.
#altq on $ext_if bandwidth 2Mb cbq queue { dflt, developers, marketing }
#queue dflt bandwidth 5% cbq(default)
#queue developers bandwidth 80%
#queue marketing  bandwidth 15%
# Translation: specify how addresses are to be mapped or redirected.
# nat: packets going out through $ext_if with source address $internal_net will
# get translated as coming from the address of $ext_if, a state is created for
# such packets, and incoming packets will be redirected to the internal address.
#nat on $ext_if from $internal_net to any -> ($ext_if)
# rdr: packets coming in on $ext_if with destination $external_addr:1234 will
# be redirected to 10.1.1.1:5678. A state is created for such packets, and
# outgoing packets will be translated as coming from the external address.
#rdr on $ext_if proto tcp from any to $external_addr/32 port 1234 -> 10.1.1.1 port 5678

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