Edit File: docker-swarm.xml
<?xml version="1.0" encoding="utf-8"?> <service> <short>Docker integrated swarm mode</short> <description>Natively managed cluster of Docker Engines (>=1.12.0), where you deploy services.</description> <port port="2377" protocol="tcp"/> <port port="7946" protocol="tcp"/> <port port="7946" protocol="udp"/> <port port="4789" protocol="udp"/> <protocol value="esp"/> </service>