Port 3388
cbserver · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | cbserver |
Frequently asked questions
What is port 3388 used for?
Port 3388 is registered with the IANA for cbserver (TCP/UDP). Description: CB Server.
Is port 3388 a well-known port?
No. Port 3388 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 3388 is open?
Locally on Linux with ss -tulpn | grep ':3388\b', on Windows with netstat -ano | findstr :3388. To test a remote host use Test-NetConnection <host> -Port 3388 in PowerShell or nc -zv <host> 3388 on Linux/macOS.
How do I open port 3388 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 3388/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3388/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3388" -Direction Inbound -Protocol TCP -LocalPort 3388 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | cbserver | CB Server |
| UDP | cbserver | CB Server |