Port 8123 — Home Assistant
Quick reference for TCP/UDP port 8123, used by Home Assistant. Includes what the service does, security guidance and related ports.
Port
8123
Protocol
TCP
Service
Home Assistant
What is port 8123?
Home Assistant web UI.
What port does Home Assistant use?
Home Assistant listens on port 8123 by default.
Security guidance
Medium risk — open with care
Port 8123 (Home Assistant) 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.
Related ports
Frequently asked
What is port 8123 used for?+
Port 8123 is the standard TCP/UDP port for Home Assistant. Home Assistant web UI.
What port does Home Assistant use?+
Home Assistant listens on port 8123 by default.
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