Port 1000
cadlock2 · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | cadlock2 |
Frequently asked questions
What is port 1000 used for?
Port 1000 is registered with the IANA for cadlock2 (TCP/UDP). Description: .
Is port 1000 a well-known port?
Yes. Port 1000 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.
How do I check whether port 1000 is open?
Locally on Linux with ss -tulpn | grep ':1000\b', on Windows with netstat -ano | findstr :1000. To test a remote host use Test-NetConnection <host> -Port 1000 in PowerShell or nc -zv <host> 1000 on Linux/macOS.
How do I open port 1000 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 1000/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=1000/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 1000" -Direction Inbound -Protocol TCP -LocalPort 1000 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | cadlock2 | |
| UDP | cadlock2 |