Port 2380: etcd peer
Port 2380 is used for peer-to-peer traffic between etcd nodes in a cluster, keeping their replicated data in sync via the Raft consensus protocol. It is separate from the client-facing port 2379.
| Port number | 2380 |
|---|---|
| Service | etcd peer communication |
| Protocol | TCP |
| Category | Infrastructure & orchestration |
| Default encryption | No |
How do I check whether port 2380 is open?
Port 2380 carries TCP, so a connection either completes its handshake or it does not, which makes the check definitive.
| Question | Command | What to know |
|---|---|---|
| Is it open on a remote host? | nc -vz example.com 2380 | A TCP handshake either completes or it does not, so netcat gives a definitive answer in one line. |
| Same check on Windows | Test-NetConnection example.com -Port 2380 | Built into PowerShell. TcpTestSucceeded in the output is the answer; telnet is not installed by default on modern Windows. |
| What is listening locally? | ss -tlnp | grep ':2380 ' | Lists the process bound to port 2380 on Linux. On macOS use lsof -nP -iTCP:2380 -sTCP:LISTEN, on Windows netstat -ano | findstr :2380 |
Replace example.com with the host you are testing. A blocked port and a port with nothing listening on it look identical from the outside, so if a service should be running, check locally before blaming the firewall.
Frequently asked questions
What is port 2380 used for?
Port 2380 is used for peer-to-peer traffic between etcd nodes in a cluster, keeping their replicated data in sync via the Raft consensus protocol. It is separate from the client-facing port 2379.
Is port 2380 TCP or UDP?
Port 2380 (etcd peer) uses TCP.
Is port 2380 secure?
Port 2380 is not encrypted by default. Where possible, use an encrypted alternative or tunnel it over TLS or a VPN.
Should I open port 2380 on my firewall?
Only if you specifically need etcd peer. Expose it to the smallest set of trusted sources, and never open database or Windows-service ports to the whole internet.