Port 4430

rsqlserver · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Servicersqlserver
Registered2008-08-28

Frequently asked questions

What is port 4430 used for?

Port 4430 is registered with the IANA for rsqlserver (TCP/UDP). Description: REAL SQL Server.

Is port 4430 a well-known port?

No. Port 4430 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4430 is open?

Locally on Linux with ss -tulpn | grep ':4430\b', on Windows with netstat -ano | findstr :4430. To test a remote host use Test-NetConnection <host> -Port 4430 in PowerShell or nc -zv <host> 4430 on Linux/macOS.

How do I open port 4430 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4430/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4430/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4430" -Direction Inbound -Protocol TCP -LocalPort 4430 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPrsqlserverREAL SQL Server
UDPrsqlserverREAL SQL Server

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