infrastructure/os/config/roles/network/templates/rules.v4

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*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [0:0]
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# Internet Control Message Protocol
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-A INPUT -p icmp -j ACCEPT
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# Administration
-A INPUT -p tcp --dport {{ ssh_port }} -j ACCEPT
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# Diplonat needs everything open to communicate with IGD with the router
-A INPUT -s {{ gatewayv4 }} -j ACCEPT
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# Cluster
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{% for selected_host in groups['cluster_nodes'] %}
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-A INPUT -s {{ hostvars[selected_host]['ipv4'] }} -j ACCEPT
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{% endfor %}
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# Local
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-A INPUT -i docker0 -j ACCEPT
-A INPUT -s 127.0.0.1/8 -j ACCEPT
-A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
COMMIT
*nat
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
COMMIT
*mangle
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
COMMIT