2377
Docker Swarm
Medium RiskTCP — System & Infrastructure
Port Overview
Port Number
2377
Service Name
Docker Swarm
Transport Protocol
TCP
Category
System & Infrastructure
Security Risk
Medium
Port Range
Registered (1024-49151)
What is Port 2377?
Port 2377 is used by Docker Swarm for cluster management communications between manager nodes. Docker Swarm is Docker's native container orchestration system, and manager nodes communicate on this port to maintain cluster state and schedule containers. This port should be accessible only between trusted Docker Swarm manager nodes.
TCP
System & Infrastructure
Commonly Used
Security Considerations
Port 2377 (Docker Swarm) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.