All ports
Port4751/UDP
spocpPort
4751
Protocol
UDP
Category
Registered
Service
spocp
What is port 4751?
Port 4751/UDP is a Registered port, registered with IANA for specific applications. It is associated with the spocp service.
Simple Policy Control Protocol
Useful commands
nmapnmap -p 4751 -sV example.comnetcatnc -zv example.com 4751curlcurl -v http://example.com:4751/telnettelnet example.com 4751bash(echo > /dev/udp/example.com/4751) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4751/udpDeny
sudo ufw deny 4751/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4751 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4751 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4751/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4751" dir=in action=allow protocol=UDP localport=4751Security 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- Outdated versions with vulnerabilities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 4751/UDP?
Port 4751/UDP is associated with the spocp service. Simple Policy Control Protocol
Is it safe to expose port 4751 to the Internet?
It depends on the service and configuration. Port 4751 (spocp) 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 4751 is open?
You can use nmap: `nmap -p 4751 -sV example.com`, netcat: `nc -zv example.com 4751`, or the bash command: `(echo > /dev/udp/example.com/4751) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4751 on my firewall?
On Linux with UFW: `sudo ufw allow 4751/udp` (open) or `sudo ufw deny 4751/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4751 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4751" dir=in action=allow protocol=UDP localport=4751`.
What applications and services use port 4751?
Port 4751/UDP is used by the spocp service. Specific uses depend on the software and configuration. Check our related tools section for more information.