Port 17 — qotd
Quick reference for TCP/UDP port 17, used by qotd. Includes what the service does, security guidance and related ports.
Port
17
Protocol
TCP/UDP
Service
qotd
What is port 17?
Quote of the Day (RFC 865).
What port does qotd use?
qotd listens on port 17 by default.
Security guidance
Medium risk — open with care
Port 17 (qotd) 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 17 used for?+
Port 17 is the standard TCP/UDP port for qotd. Quote of the Day (RFC 865).
What port does qotd use?+
qotd listens on port 17 by default.
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