Port 22002
optohost002 · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | optohost002 |
| Registered | 2006-09 |
Frequently asked questions
What is port 22002 used for?
Port 22002 is registered with the IANA for optohost002 (TCP/UDP). Description: Opto Host Port 2.
Is port 22002 a well-known port?
No. Port 22002 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 22002 is open?
Locally on Linux with ss -tulpn | grep ':22002\b', on Windows with netstat -ano | findstr :22002. To test a remote host use Test-NetConnection <host> -Port 22002 in PowerShell or nc -zv <host> 22002 on Linux/macOS.
How do I open port 22002 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 22002/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=22002/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 22002" -Direction Inbound -Protocol TCP -LocalPort 22002 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | optohost002 | Opto Host Port 2 |
| UDP | optohost002 | Opto Host Port 2 |