Port 2377
swarm · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | swarm |
| Registered | 2016-12-23 |
Frequently asked questions
What is port 2377 used for?
Port 2377 is registered with the IANA for swarm (TCP/UDP). Description: RPC interface for Docker Swarm; Reserved.
Is port 2377 a well-known port?
No. Port 2377 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 2377 is open?
Locally on Linux with ss -tulpn | grep ':2377\b', on Windows with netstat -ano | findstr :2377. To test a remote host use Test-NetConnection <host> -Port 2377 in PowerShell or nc -zv <host> 2377 on Linux/macOS.
How do I open port 2377 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 2377/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=2377/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 2377" -Direction Inbound -Protocol TCP -LocalPort 2377 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | swarm | RPC interface for Docker Swarm |
| UDP | – | Reserved |