Port 4839

varadero-2 · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicevaradero-2

Frequently asked questions

What is port 4839 used for?

Port 4839 is registered with the IANA for varadero-2 (TCP/UDP). Description: Varadero-2.

Is port 4839 a well-known port?

No. Port 4839 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4839 is open?

Locally on Linux with ss -tulpn | grep ':4839\b', on Windows with netstat -ano | findstr :4839. To test a remote host use Test-NetConnection <host> -Port 4839 in PowerShell or nc -zv <host> 4839 on Linux/macOS.

How do I open port 4839 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4839/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4839/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4839" -Direction Inbound -Protocol TCP -LocalPort 4839 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPvaradero-2Varadero-2
UDPvaradero-2Varadero-2

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