Port 1973
dlsrap · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | dlsrap |
Frequently asked questions
What is port 1973 used for?
Port 1973 is registered with the IANA for dlsrap (TCP/UDP). Description: Data Link Switching Remote Access Protocol.
Is port 1973 a well-known port?
No. Port 1973 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 1973 is open?
Locally on Linux with ss -tulpn | grep ':1973\b', on Windows with netstat -ano | findstr :1973. To test a remote host use Test-NetConnection <host> -Port 1973 in PowerShell or nc -zv <host> 1973 on Linux/macOS.
How do I open port 1973 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 1973/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=1973/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 1973" -Direction Inbound -Protocol TCP -LocalPort 1973 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | dlsrap | Data Link Switching Remote Access Protocol |
| UDP | dlsrap | Data Link Switching Remote Access Protocol |