All ports
Port4430/UDP
rsqlserverPort
4430
Protocol
UDP
Category
Registered
Service
rsqlserver
What is port 4430?
Port 4430/UDP is a Registered port, registered with IANA for specific applications. It is associated with the rsqlserver service.
REAL SQL Server
Useful commands
nmapnmap -p 4430 -sV example.comnetcatnc -zv example.com 4430curlcurl -v http://example.com:4430/telnettelnet example.com 4430bash(echo > /dev/udp/example.com/4430) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4430/udpDeny
sudo ufw deny 4430/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4430 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4430 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4430/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4430" dir=in action=allow protocol=UDP localport=4430Security Risks
- Unauthorized access to the service
- Data exposure if the service is unauthenticated
- Outdated versions with vulnerabilities
- Incorrect service configuration
Frequently Asked Questions
What service runs on port 4430/UDP?
Port 4430/UDP is associated with the rsqlserver service. REAL SQL Server
Is it safe to expose port 4430 to the Internet?
It depends on the service and configuration. Port 4430 (rsqlserver) is a Registered port. If you need to expose it, keep the service updated, use strong authentication, and configure a firewall. It's always recommended to restrict access by IP when possible.
How do I check if port 4430 is open?
You can use nmap: `nmap -p 4430 -sV example.com`, netcat: `nc -zv example.com 4430`, or the bash command: `(echo > /dev/udp/example.com/4430) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4430 on my firewall?
On Linux with UFW: `sudo ufw allow 4430/udp` (open) or `sudo ufw deny 4430/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4430 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4430" dir=in action=allow protocol=UDP localport=4430`.
What applications and services use port 4430?
Port 4430/UDP is used by the rsqlserver service. Specific uses depend on the software and configuration. Check our related tools section for more information.