Is port 694 (Linux-HA) dangerous?

Port 694 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 694 be open on my firewall?

Port 694 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 694 use?

Port 694 (Linux-HA) uses the UDP transport protocol and falls under the System & Infrastructure category.

:694 (UDP)

Linux-HA

Medium Risk

UDP — 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.

Related Ports — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Related Terms

Bandwidth Latency Packet Loss Ping Throughput ASN