Port 3750

cbos-ip-port · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicecbos-ip-port
Registered2003-04

Frequently asked questions

What is port 3750 used for?

Port 3750 is registered with the IANA for cbos-ip-port (TCP/UDP). Description: CBOS/IP ncapsalation port.

Is port 3750 a well-known port?

No. Port 3750 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 3750 is open?

Locally on Linux with ss -tulpn | grep ':3750\b', on Windows with netstat -ano | findstr :3750. To test a remote host use Test-NetConnection <host> -Port 3750 in PowerShell or nc -zv <host> 3750 on Linux/macOS.

How do I open port 3750 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 3750/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3750/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3750" -Direction Inbound -Protocol TCP -LocalPort 3750 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPcbos-ip-portCBOS/IP ncapsalation port
UDPcbos-ip-portCBOS/IP ncapsalation port

Nearby entries