Port 2377 — Docker Swarm
Quick reference for TCP/UDP port 2377, used by Docker Swarm. Includes what the service does, security guidance and related ports.
Port
2377
Protocol
TCP
Service
Docker Swarm
What is port 2377?
Docker Swarm cluster management.
What port does Docker Swarm use?
Docker Swarm listens on port 2377 by default.
Security guidance
Medium risk — open with care
Port 2377 (Docker Swarm) 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 2377 used for?+
Port 2377 is the standard TCP/UDP port for Docker Swarm. Docker Swarm cluster management.
What port does Docker Swarm use?+
Docker Swarm listens on port 2377 by default.
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