machine_setup/ansible/roles/firewall/files/homeserver_pf.conf

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ext_if = "{ igb0 igb1 ix0 ix1 wlan0 }"
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jail_net_v4 = "10.193.223.0/24"
full_nat_v4 = "10.213.177.0/24"
dhcp = "{ bootpc, bootps }"
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allow = "{ wgh wgf }"
tcp_pass_in = "{ 22 }"
udp_pass_in = "{ 53 51820 }"
# Rules must be in order: options, normalization, queueing, translation, filtering
# options
set skip on lo
# redirections
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nat on $ext_if inet from $jail_net_v4 to { any, !$jail_net_v4 } tag ALLOWED -> (wlan0)
nat on $ext_if inet from $full_nat_v4 to { any, !$full_nat_v4 } tag ALLOWED -> (wlan0)
rdr pass on host_uplink0 inet proto {tcp, udp} from any to 10.193.223.1 port 53 tag ALLOWED -> 1.1.1.1 port 53
rdr pass on host_uplink1 inet proto {tcp, udp} from any to 10.213.177.1 port 53 tag ALLOWED -> 1.1.1.1 port 53
nat pass on host_uplink0 inet proto tcp from any to any port 8081 tag ALLOWED -> (host_uplink0)
rdr pass on $ext_if inet proto tcp from any to any port 8081 tag ALLOWED -> 10.193.223.20 port 8081
# filtering
block log all
pass out on $ext_if
# We pass on the interfaces listed in allow rather than skipping on
# them because changes to pass rules will update when running a
# `service pf reload` but interfaces that we `skip` will not update (I
# forget if its from adding, removing, or both. TODO: test to figure
# it out)
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pass quick on $allow
pass on $ext_if proto icmp all
pass on $ext_if proto icmp6 all
pass in on $ext_if proto tcp to any port $tcp_pass_in
pass in on $ext_if proto udp to any port $udp_pass_in
pass quick on $ext_if proto udp from any port $dhcp to any port $dhcp
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pass in on host_uplink0 proto udp from any to any port { 53 51820 }
pass out on host_uplink0 proto tcp from any to any port 8081
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pass on host_uplink1