Linux Firewall for Docker Swarm on CentOS 7

docker firewall linux

Firewalld

firewall-cmd --add-port=2376/tcp --permanent
firewall-cmd --add-port=2377/tcp --permanent
firewall-cmd --add-port=7946/tcp --permanent
firewall-cmd --add-port=7946/udp --permanent
firewall-cmd --add-port=4789/udp --permanent
firewall-cmd --reload
systemctl restart docker

IPTables

iptables -I INPUT -p tcp --dport 2376 -j ACCEPT
iptables -I INPUT -p tcp --dport 2377 -j ACCEPT
iptables -I INPUT -p tcp --dport 7946 -j ACCEPT
iptables -I INPUT -p udp --dport 7946 -j ACCEPT
iptables -I INPUT -p udp --dport 4789 -j ACCEPT
systemctl restart docker

Written on May 17, 2018