iptables: use template

roles/configure_iptables/files/ip6tables.rules

@@ -1,43 +0,0 @@
-*filter
-:INPUT DROP [0:0]
-:FORWARD DROP [0:0]
-:OUTPUT ACCEPT [0:0]
--A INPUT -i lo -j ACCEPT
--A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
--A INPUT -p icmpv6 -j ACCEPT
-
-# SSH-Server
--A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
-# dns
--A INPUT -p tcp -m tcp --dport 53 -j ACCEPT
--A INPUT -p udp -m udp --dport 53 -j ACCEPT
-# ntp
--A INPUT -p udp -m udp --dport 123 -j ACCEPT
-# fastd
--A INPUT -p udp -m udp --dport 10010:10021 -j ACCEPT
-# wireguard_mesh
--A INPUT -p udp -m udp --dport 10110 -j ACCEPT
--A INPUT -p udp -m udp --dport 10112 -j ACCEPT
--A INPUT -p udp -m udp --dport 10114 -j ACCEPT
--A INPUT -p udp -m udp --dport 10116 -j ACCEPT
--A INPUT -p udp -m udp --dport 10118 -j ACCEPT
--A INPUT -p udp -m udp --dport 10120 -j ACCEPT
--A INPUT -s fdff:4157:bb::/48 -p gre -j ACCEPT
--A INPUT -s fdff:434f:43bb::/48 -p gre -j ACCEPT
--A INPUT -s fdff:454d:53bb::/48 -p gre -j ACCEPT
--A INPUT -s fdff:4b4f:bb::/48 -p gre -j ACCEPT
--A INPUT -s fdff:4d59:bb::/48 -p gre -j ACCEPT
--A INPUT -s fdff:5349:4dbb::/48 -p gre -j ACCEPT
-# MOSH
--A INPUT -p udp -m udp --dport 60000:61000 -j ACCEPT
-# LOG
--A INPUT -m limit --limit 2/min -j LOG --log-prefix "IP6Tables-Dropped input: " --log-level 4
-
--A FORWARD -i bataw -p udp --dport 10010:10021 -j REJECT
--A FORWARD -i batcoc -p udp --dport 10010:10021 -j REJECT
--A FORWARD -i batems -p udp --dport 10010:10021 -j REJECT
--A FORWARD -i batko -p udp --dport 10010:10021 -j REJECT
--A FORWARD -i batmy -p udp --dport 10010:10021 -j REJECT
--A FORWARD -i batsim -p udp --dport 10010:10021 -j REJECT
--A FORWARD -m limit --limit 2/min -j LOG --log-prefix "IP6Tables-Dropped forward: " --log-level 4
-COMMIT

roles/configure_iptables/tasks/main.yml

@@ -1,6 +1,6 @@
 ---
 - name: copy iptables.rules
-  copy:
+  template:
       src: iptables.rules
       dest: /etc/iptables/iptables.rules
   notify: reload iptables
@@ -12,7 +12,7 @@
       state: started
 
 - name: copy ip6tables.rules
-  copy:
+  template:
       src: ip6tables.rules
       dest: /etc/iptables/ip6tables.rules
   notify: reload ip6tables

roles/configure_iptables/templates/ip6tables.rules

@@ -0,0 +1,37 @@
+*filter
+:INPUT DROP [0:0]
+:FORWARD DROP [0:0]
+:OUTPUT ACCEPT [0:0]
+-A INPUT -i lo -j ACCEPT
+-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
+-A INPUT -p icmpv6 -j ACCEPT
+
+# SSH-Server
+-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
+# dns
+-A INPUT -p tcp -m tcp --dport 53 -j ACCEPT
+-A INPUT -p udp -m udp --dport 53 -j ACCEPT
+# ntp
+-A INPUT -p udp -m udp --dport 123 -j ACCEPT
+# fastd
+-A INPUT -p udp -m udp --dport 10010:10021 -j ACCEPT
+# wireguard_mesh
+{% for site in sites %}
+-A INPUT -p udp -m udp --dport {{ site.wireguard_mesh_port }} -j ACCEPT
+-A INPUT -s {{ site.wireguard_mesh_address }}/48 -p gre -j ACCEPT
+{% endfor %}
+# wireguard_backbone
+-A INPUT -s fdff:4d59:4bbb::/48 -p gre -j ACCEPT
+{% for peer in wireguard_bb_peers %}
+-A INPUT -i bb{{ peer.name }} -p udp --dport 6696 -j ACCEPT
+{% endfor %}
+# MOSH
+-A INPUT -p udp -m udp --dport 60000:61000 -j ACCEPT
+# LOG
+-A INPUT -m limit --limit 2/min -j LOG --log-prefix "IP6Tables-Dropped input: " --log-level 4
+
+{% for site in sites %}
+-A FORWARD -i bat{{ site.name }} -p udp --dport 10010:10021 -j REJECT
+{% endfor %}
+-A FORWARD -m limit --limit 2/min -j LOG --log-prefix "IP6Tables-Dropped forward: " --log-level 4
+COMMIT

roles/configure_iptables/templates/iptables.rules

@@ -4,12 +4,9 @@
 :FORWARD ACCEPT [0:0]
 :OUTPUT ACCEPT [0:0]
 :POSTROUTING ACCEPT [0:0]
--A PREROUTING -i bataw -j MARK --set-xmark 0x1/0xffffffff
+{% for site in sites %}
--A PREROUTING -i batcoc -j MARK --set-xmark 0x1/0xffffffff
+-A PREROUTING -i bat{{ site.name }} -j MARK --set-xmark 0x1/0xffffffff
--A PREROUTING -i batems -j MARK --set-xmark 0x1/0xffffffff
+{% endfor %}
--A PREROUTING -i batko -j MARK --set-xmark 0x1/0xffffffff
--A PREROUTING -i batmy -j MARK --set-xmark 0x1/0xffffffff
--A PREROUTING -i batsim -j MARK --set-xmark 0x1/0xffffffff
 COMMIT
 *filter
 :INPUT DROP [0:0]
@@ -34,12 +31,9 @@ COMMIT
 -A INPUT -p udp -m udp --dport 60000:61000 -j ACCEPT
 -A INPUT -m limit --limit 2/min -j LOG --log-prefix "IPTables-Dropped input: " --log-level 4
 
--A FORWARD -i bataw -p udp --dport 10010:10021 -j REJECT
+{% for site in sites %}
--A FORWARD -i batcoc -p udp --dport 10010:10021 -j REJECT
+-A FORWARD -i bat{{ site.name }} -p udp --dport 10010:10021 -j REJECT
--A FORWARD -i batems -p udp --dport 10010:10021 -j REJECT
+{% endfor %}
--A FORWARD -i batko -p udp --dport 10010:10021 -j REJECT
--A FORWARD -i batmy -p udp --dport 10010:10021 -j REJECT
--A FORWARD -i batsim -p udp --dport 10010:10021 -j REJECT
 -A FORWARD -m limit --limit 2/min -j LOG --log-prefix "IPTables-Dropped forward: " --log-level 4
 COMMIT
 *nat