:661
(TCP/UDP)
Low Risk
HAP
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TCP/UDP — System & Infrastructure
Port Overview
Port Number
661
Service Name
HAP
Transport Protocol
TCP/UDP
Category
System & Infrastructure
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 661?
HAP (High Availability Protocol). Protocol for managing high-availability clusters and failover.
TCP/UDP
System & Infrastructure
Security Considerations
Port 661 (HAP) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.
Recommendation: Standard security practices apply. Keep software updated and monitor access.