OMG DDS Open Management Group (OMG) Data Distribution Service (DDS) is protocol supporting various applications. It is usally found in control systems. This is the unicast service for domains with ID 0 ito 10 and maximal possible applications (120). Please see https://community.rti.com/content/forum-topic/statically-configure-firewall-let-omg-dds-traffic-through for details.