Port 1687
nsjtp-ctrl · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | nsjtp-ctrl |
Frequently asked questions
What is port 1687 used for?
Port 1687 is registered with the IANA for nsjtp-ctrl (TCP/UDP). Description: nsjtp-ctrl.
Is port 1687 a well-known port?
No. Port 1687 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 1687 is open?
Locally on Linux with ss -tulpn | grep ':1687\b', on Windows with netstat -ano | findstr :1687. To test a remote host use Test-NetConnection <host> -Port 1687 in PowerShell or nc -zv <host> 1687 on Linux/macOS.
How do I open port 1687 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 1687/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=1687/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 1687" -Direction Inbound -Protocol TCP -LocalPort 1687 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | nsjtp-ctrl | nsjtp-ctrl |
| UDP | nsjtp-ctrl | nsjtp-ctrl |