Port 2873
psrt · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | psrt |
| Registered | 2021-11-12 |
Frequently asked questions
What is port 2873 used for?
Port 2873 is registered with the IANA for psrt (TCP/UDP). Description: PubSub Realtime Telemetry Protocol.
Is port 2873 a well-known port?
No. Port 2873 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 2873 is open?
Locally on Linux with ss -tulpn | grep ':2873\b', on Windows with netstat -ano | findstr :2873. To test a remote host use Test-NetConnection <host> -Port 2873 in PowerShell or nc -zv <host> 2873 on Linux/macOS.
How do I open port 2873 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 2873/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=2873/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 2873" -Direction Inbound -Protocol TCP -LocalPort 2873 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | psrt | PubSub Realtime Telemetry Protocol |
| UDP | psrt | PubSub Realtime Telemetry Protocol |