cloud-config.yml

#cloud-config

coreos:
  units:
    - name: iptables-restore.service
      enable: true
write_files:
  - path: /var/lib/iptables/rules-save
    permissions: 0644
    owner: root:root
    content: |
      *filter
      :INPUT DROP [0:0]
      :FORWARD DROP [0:0]
      :OUTPUT ACCEPT [0:0]
      -A INPUT -i lo -j ACCEPT
      -A INPUT -i eth1 -j ACCEPT
      -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
      -A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
      -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
      -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT
      -A INPUT -p icmp -m icmp --icmp-type 0 -j ACCEPT
      -A INPUT -p icmp -m icmp --icmp-type 3 -j ACCEPT
      -A INPUT -p icmp -m icmp --icmp-type 11 -j ACCEPT
      -A FORWARD -i docker0 -o eth0 -j ACCEPT
      -A FORWARD -i eth0 -o docker0 -j ACCEPT
      -A FORWARD -i docker0 -o eth0 -j ACCEPT
      -A FORWARD -i eth0 -o docker0 -j ACCEPT
      COMMIT