All ports
Port3751/UDP
gprs-cubePort
3751
Protocol
UDP
Category
Registered
Service
gprs-cube
What is port 3751?
Port 3751/UDP is a Registered port, registered with IANA for specific applications. It is associated with the gprs-cube service.
CommLinx GPRS Cube
Useful commands
nmapnmap -p 3751 -sV example.comnetcatnc -zv example.com 3751curlcurl -v http://example.com:3751/telnettelnet example.com 3751bash(echo > /dev/udp/example.com/3751) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3751/udpDeny
sudo ufw deny 3751/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3751 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3751 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3751/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3751" dir=in action=allow protocol=UDP localport=3751Security 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- Outdated versions with vulnerabilities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 3751/UDP?
Port 3751/UDP is associated with the gprs-cube service. CommLinx GPRS Cube
Is it safe to expose port 3751 to the Internet?
It depends on the service and configuration. Port 3751 (gprs-cube) 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 3751 is open?
You can use nmap: `nmap -p 3751 -sV example.com`, netcat: `nc -zv example.com 3751`, or the bash command: `(echo > /dev/udp/example.com/3751) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3751 on my firewall?
On Linux with UFW: `sudo ufw allow 3751/udp` (open) or `sudo ufw deny 3751/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3751 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3751" dir=in action=allow protocol=UDP localport=3751`.
What applications and services use port 3751?
Port 3751/UDP is used by the gprs-cube service. Specific uses depend on the software and configuration. Check our related tools section for more information.