Port 21846
netspeak-is · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | netspeak-is |
Frequently asked questions
What is port 21846 used for?
Port 21846 is registered with the IANA for netspeak-is (TCP/UDP). Description: NetSpeak Corp. Directory Services.
Is port 21846 a well-known port?
No. Port 21846 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 21846 is open?
Locally on Linux with ss -tulpn | grep ':21846\b', on Windows with netstat -ano | findstr :21846. To test a remote host use Test-NetConnection <host> -Port 21846 in PowerShell or nc -zv <host> 21846 on Linux/macOS.
How do I open port 21846 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 21846/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=21846/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 21846" -Direction Inbound -Protocol TCP -LocalPort 21846 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | netspeak-is | NetSpeak Corp. Directory Services |
| UDP | netspeak-is | NetSpeak Corp. Directory Services |