:477
(TCP/UDP)
Low Risk
SS7NS
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TCP/UDP — Messaging
Port Overview
Port Number
477
Service Name
SS7NS
Transport Protocol
TCP/UDP
Category
Messaging
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 477?
SS7 over IP (NS). Signaling System 7 over IP for telecom signaling network services.
TCP/UDP
Messaging
Security Considerations
Port 477 (SS7NS) 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.