Port 7777
cbt · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | cbt |
Frequently asked questions
What is port 7777 used for?
Port 7777 is registered with the IANA for cbt (TCP/UDP). Description: cbt.
Is port 7777 a well-known port?
No. Port 7777 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 7777 is open?
Locally on Linux with ss -tulpn | grep ':7777\b', on Windows with netstat -ano | findstr :7777. To test a remote host use Test-NetConnection <host> -Port 7777 in PowerShell or nc -zv <host> 7777 on Linux/macOS.
How do I open port 7777 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 7777/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=7777/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 7777" -Direction Inbound -Protocol TCP -LocalPort 7777 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | cbt | cbt |
| UDP | cbt | cbt |