Port 9876
sd · TCP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP |
| Service | sd |
Frequently asked questions
What is port 9876 used for?
Port 9876 is registered with the IANA for sd (TCP). Description: Session Director.
Is port 9876 a well-known port?
No. Port 9876 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 9876 is open?
Locally on Linux with ss -tulpn | grep ':9876\b', on Windows with netstat -ano | findstr :9876. To test a remote host use Test-NetConnection <host> -Port 9876 in PowerShell or nc -zv <host> 9876 on Linux/macOS.
How do I open port 9876 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 9876/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=9876/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 9876" -Direction Inbound -Protocol TCP -LocalPort 9876 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | sd | Session Director |