Port 3772

ctp · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicectp
Registered2003-06

Frequently asked questions

What is port 3772 used for?

Port 3772 is registered with the IANA for ctp (TCP/UDP). Description: Chantry Tunnel Protocol.

Is port 3772 a well-known port?

No. Port 3772 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3772 is open?

Locally on Linux with ss -tulpn | grep ':3772\b', on Windows with netstat -ano | findstr :3772. To test a remote host use Test-NetConnection <host> -Port 3772 in PowerShell or nc -zv <host> 3772 on Linux/macOS.

How do I open port 3772 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3772/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3772/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3772" -Direction Inbound -Protocol TCP -LocalPort 3772 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPctpChantry Tunnel Protocol
UDPctpChantry Tunnel Protocol

Nearby entries