Port 79 — Finger
Quick reference for TCP/UDP port 79, used by Finger. Includes what the service does, security guidance and related ports.
Port
79
Protocol
TCP
Service
Finger
What is port 79?
Legacy user information protocol.
What port does Finger use?
Finger listens on port 79 by default.
Security guidance
Medium risk — open with care
Port 79 (Finger) can safely face the internet if you keep the software up to date, restrict admin endpoints, and use TLS where possible. Audit who can reach it and watch your logs.
Frequently asked
What is port 79 used for?+
Port 79 is the standard TCP/UDP port for Finger. Legacy user information protocol.
What port does Finger use?+
Finger listens on port 79 by default.
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