517
Talk
Low RiskUDP — Messaging
Port Overview
Port Number
517
Service Name
Talk
Transport Protocol
UDP
Category
Messaging
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 517?
Port 517 is assigned to Talk, a real-time text chat program for Unix systems. Obsolete in modern environments.
UDP
Messaging
Security Considerations
Port 517 (Talk) 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.