All ports
Port444/UDP
snppPort
444
Protocol
UDP
Category
Well-Known
Service
snpp
What is port 444?
Port 444/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the snpp service.
Simple Network Paging Protocol
Useful commands
nmapnmap -p 444 -sV example.comnetcatnc -zv example.com 444curlcurl -v http://example.com:444/telnettelnet example.com 444bash(echo > /dev/udp/example.com/444) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 444/udpDeny
sudo ufw deny 444/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 444 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 444 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=444/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 444" dir=in action=allow protocol=UDP localport=444Security 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- Outdated versions with vulnerabilities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 444/UDP?
Port 444/UDP is associated with the snpp service. Simple Network Paging Protocol
Is it safe to expose port 444 to the Internet?
It depends on the service and configuration. Port 444 (snpp) 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 444 is open?
You can use nmap: `nmap -p 444 -sV example.com`, netcat: `nc -zv example.com 444`, or the bash command: `(echo > /dev/udp/example.com/444) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 444 on my firewall?
On Linux with UFW: `sudo ufw allow 444/udp` (open) or `sudo ufw deny 444/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 444 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 444" dir=in action=allow protocol=UDP localport=444`.
What applications and services use port 444?
Port 444/UDP is used by the snpp service. Specific uses depend on the software and configuration. Check our related tools section for more information.