All ports
Port3910/UDP
prnrequestPort
3910
Protocol
UDP
Category
Registered
Service
prnrequest
What is port 3910?
Port 3910/UDP is a Registered port, registered with IANA for specific applications. It is associated with the prnrequest service.
Printer Request Port
Useful commands
nmapnmap -p 3910 -sV example.comnetcatnc -zv example.com 3910curlcurl -v http://example.com:3910/telnettelnet example.com 3910bash(echo > /dev/udp/example.com/3910) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3910/udpDeny
sudo ufw deny 3910/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3910 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3910 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3910/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3910" dir=in action=allow protocol=UDP localport=3910Security 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- Outdated versions with vulnerabilities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 3910/UDP?
Port 3910/UDP is associated with the prnrequest service. Printer Request Port
Is it safe to expose port 3910 to the Internet?
It depends on the service and configuration. Port 3910 (prnrequest) 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 3910 is open?
You can use nmap: `nmap -p 3910 -sV example.com`, netcat: `nc -zv example.com 3910`, or the bash command: `(echo > /dev/udp/example.com/3910) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3910 on my firewall?
On Linux with UFW: `sudo ufw allow 3910/udp` (open) or `sudo ufw deny 3910/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3910 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3910" dir=in action=allow protocol=UDP localport=3910`.
What applications and services use port 3910?
Port 3910/UDP is used by the prnrequest service. Specific uses depend on the software and configuration. Check our related tools section for more information.