Port 4055

ccu-comm-3 · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceccu-comm-3
Registered2006-07

Frequently asked questions

What is port 4055 used for?

Port 4055 is registered with the IANA for ccu-comm-3 (TCP/UDP). Description: CosmoCall Universe Communications Port 3.

Is port 4055 a well-known port?

No. Port 4055 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4055 is open?

Locally on Linux with ss -tulpn | grep ':4055\b', on Windows with netstat -ano | findstr :4055. To test a remote host use Test-NetConnection <host> -Port 4055 in PowerShell or nc -zv <host> 4055 on Linux/macOS.

How do I open port 4055 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4055/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4055/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4055" -Direction Inbound -Protocol TCP -LocalPort 4055 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPccu-comm-3CosmoCall Universe Communications Port 3
UDPccu-comm-3CosmoCall Universe Communications Port 3

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