Add firewall to mrmanager.

ansible/environments/colo/host_vars/mrmanager

@@ -6,3 +6,7 @@ loader_conf: "mrmanager_loader.conf"
 rc_conf: "mrmanager_rc.conf"
 network_rc: "mrmanager_network.conf"
 routing_rc: "mrmanager_routing.conf"
+pf_config: "mrmanager_pf.conf"
+pflog_conf:
+  - name: 0
+    dev: pflog0

ansible/playbook.yaml

@@ -76,3 +76,4 @@
     - network
     - sshd
     - base
+    - firewall

ansible/roles/firewall/files/mrmanager_pf.conf

@@ -0,0 +1,39 @@
+ext_if = "lagg0"
+jail_nat_v4 = "{ 10.215.1.0/24 }"
+not_jail_nat_v4 = "{ any, !10.215.1.0/24 }"
+
+dhcp = "{ bootpc, bootps }"
+allow = "{ colo }"
+
+tcp_pass_in = "{ 22 }"
+udp_pass_in = "{ 53 51820 51821 51822 }"
+
+# Rules must be in order: options, normalization, queueing, translation, filtering
+
+# options
+set skip on lo
+
+# redirections
+nat pass on $ext_if inet from $jail_nat_v4 to $not_jail_nat_v4 -> ($ext_if)
+rdr pass on !$ext_if proto {tcp, udp} from any to 10.215.1.1 port 53 -> 1.1.1.1 port 53
+
+# filtering
+block log all
+pass out on $ext_if
+
+pass in on jail_nat
+# Allow traffic from my machine to the jails/virtual machines
+pass out on jail_nat from $jail_nat_v4
+
+# 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). Also skipped interfaces are not subject to nat/rdr rules.
+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