Is port 2377 (Docker Swarm) dangerous?

Port 2377 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 2377 be open on my firewall?

Port 2377 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 2377 use?

Port 2377 (Docker Swarm) uses the TCP transport protocol and falls under the System & Infrastructure category.

:2377 (TCP)

Docker Swarm

Medium Risk

TCP — 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.

Related Ports — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Related Terms

Bandwidth Latency Packet Loss Ping Throughput ASN