All ports
Port751/UDP
pumpPort
751
Protocol
UDP
Category
Well-Known
Service
pump
What is port 751?
Port 751/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the pump service.
Useful commands
nmapnmap -p 751 -sV example.comnetcatnc -zv example.com 751curlcurl -v http://example.com:751/telnettelnet example.com 751bash(echo > /dev/udp/example.com/751) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 751/udpDeny
sudo ufw deny 751/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 751 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 751 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=751/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 751" dir=in action=allow protocol=UDP localport=751Security 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- Outdated versions with vulnerabilities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 751/UDP?
Port 751/UDP is associated with the pump service. No detailed description is available in the IANA registry.
Is it safe to expose port 751 to the Internet?
It depends on the service and configuration. Port 751 (pump) is a Well-Known 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 751 is open?
You can use nmap: `nmap -p 751 -sV example.com`, netcat: `nc -zv example.com 751`, or the bash command: `(echo > /dev/udp/example.com/751) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 751 on my firewall?
On Linux with UFW: `sudo ufw allow 751/udp` (open) or `sudo ufw deny 751/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 751 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 751" dir=in action=allow protocol=UDP localport=751`.
What applications and services use port 751?
Port 751/UDP is used by the pump service. Specific uses depend on the software and configuration. Check our related tools section for more information.