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CentOS firewalld + Docker companion
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| cp /etc/docker/daemon.json /etc/docker/daemon.json.old | |
| echo '{"iptables": false}' > /etc/docker/daemon.json | |
| firewall-cmd --permanent --direct --add-rule ipv4 nat POSTROUTING 0 -o eth0 -j MASQUERADE # this enables containers access outside internet | |
| firewall-cmd --reload |
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