:518
(UDP)
Low Risk
NTalk
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UDP — Messaging
Port Overview
Port Number
518
Service Name
NTalk
Transport Protocol
UDP
Category
Messaging
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 518?
Port 518 is assigned to NTalk (New Talk), an updated version of the Unix Talk protocol with improved cross-platform compatibility. Obsolete.
UDP
Messaging
Security Considerations
Port 518 (NTalk) 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.