Port 5672: AMQP
Port 5672 is AMQP, the Advanced Message Queuing Protocol most commonly associated with RabbitMQ. Applications publish messages to queues and exchanges on this port so that other services can consume them asynchronously.
| Port number | 5672 |
|---|---|
| Service | Advanced Message Queuing Protocol |
| Protocol | TCP |
| Category | Message queues |
| Default encryption | No |
How do I check whether port 5672 is open?
Port 5672 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 5672 | 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 5672 | 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 ':5672 ' | Lists the process bound to port 5672 on Linux. On macOS use lsof -nP -iTCP:5672 -sTCP:LISTEN, on Windows netstat -ano | findstr :5672 |
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 5672 used for?
Port 5672 is AMQP, the Advanced Message Queuing Protocol most commonly associated with RabbitMQ. Applications publish messages to queues and exchanges on this port so that other services can consume them asynchronously.
Is port 5672 TCP or UDP?
Port 5672 (AMQP) uses TCP.
Is port 5672 secure?
Port 5672 is not encrypted by default. Where possible, use an encrypted alternative or tunnel it over TLS or a VPN.
Should I open port 5672 on my firewall?
Only if you specifically need AMQP. Expose it to the smallest set of trusted sources, and never open database or Windows-service ports to the whole internet.