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*nat
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:PREROUTING ACCEPT [0:0]
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:POSTROUTING ACCEPT [0:0]
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-A POSTROUTING -s {{ vpn_network }} -m policy --pol none --dir out -j MASQUERADE
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COMMIT
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*filter
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:INPUT DROP [0:0]
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:FORWARD DROP [0:0]
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:OUTPUT ACCEPT [0:0]
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-A INPUT -i lo -j ACCEPT
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-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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-A INPUT -p esp -j ACCEPT
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-A INPUT -p ah -j ACCEPT
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# rate limit ICMP traffic per source
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-A INPUT -p icmp --icmp-type echo-request -m hashlimit --hashlimit-upto 5/s --hashlimit-mode srcip --hashlimit-srcmask 32 --hashlimit-name icmp-echo-drop -j DROP
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-A INPUT -p udp -m multiport --dports 500,4500 -j ACCEPT
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-A INPUT -p tcp --dport 22 -m conntrack --ctstate NEW -j ACCEPT
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# TODO:
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# The IP of the resolver should be bound to a DUMMY interface.
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# DUMMY interfaces are the proper way to install IPs without assigning them any
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# particular virtual (tun,tap,...) or physical (ethernet) interface.
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-A INPUT -d {{ local_service_ip }} -p udp --dport 53 -j ACCEPT
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-A INPUT -d {{ local_service_ip }} -p tcp -m multiport --dport 8080,8118 -j ACCEPT
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{% if BetweenClients_DROP is defined and BetweenClients_DROP == "Y" %}
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-A FORWARD -s {{ vpn_network }} -d {{ vpn_network }} -j DROP
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{% endif %}
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-A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
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-A FORWARD -p tcp --dport 445 -j DROP
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-A FORWARD -p udp -m multiport --ports 137,138 -j DROP
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-A FORWARD -p tcp -m multiport --ports 137,139 -j DROP
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-A FORWARD -m conntrack --ctstate NEW -s {{ vpn_network }} -m policy --pol ipsec --dir in -j ACCEPT
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COMMIT
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