694
Linux-HA
Medium RiskUDP — System & Infrastructure
Port Overview
Port Number
694
Service Name
Linux-HA
Transport Protocol
UDP
Category
System & Infrastructure
Security Risk
Medium
Port Range
Well-Known (0-1023)
What is Port 694?
Linux-HA Heartbeat protocol, used by the Heartbeat component for sending keepalive packets between cluster nodes to detect failures. Forms the basis of Pacemaker/Corosync clusters.
UDP
System & Infrastructure
Commonly Used
Security Considerations
Port 694 (Linux-HA) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.