Port 21849
netspeak-cps · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | netspeak-cps |
Frequently asked questions
What is port 21849 used for?
Port 21849 is registered with the IANA for netspeak-cps (TCP/UDP). Description: NetSpeak Corp. Credit Processing System.
Is port 21849 a well-known port?
No. Port 21849 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 21849 is open?
Locally on Linux with ss -tulpn | grep ':21849\b', on Windows with netstat -ano | findstr :21849. To test a remote host use Test-NetConnection <host> -Port 21849 in PowerShell or nc -zv <host> 21849 on Linux/macOS.
How do I open port 21849 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 21849/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=21849/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 21849" -Direction Inbound -Protocol TCP -LocalPort 21849 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | netspeak-cps | NetSpeak Corp. Credit Processing System |
| UDP | netspeak-cps | NetSpeak Corp. Credit Processing System |