Port 21848
netspeak-acd · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | netspeak-acd |
Frequently asked questions
What is port 21848 used for?
Port 21848 is registered with the IANA for netspeak-acd (TCP/UDP). Description: NetSpeak Corp. Automatic Call Distribution.
Is port 21848 a well-known port?
No. Port 21848 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 21848 is open?
Locally on Linux with ss -tulpn | grep ':21848\b', on Windows with netstat -ano | findstr :21848. To test a remote host use Test-NetConnection <host> -Port 21848 in PowerShell or nc -zv <host> 21848 on Linux/macOS.
How do I open port 21848 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 21848/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=21848/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 21848" -Direction Inbound -Protocol TCP -LocalPort 21848 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | netspeak-acd | NetSpeak Corp. Automatic Call Distribution |
| UDP | netspeak-acd | NetSpeak Corp. Automatic Call Distribution |