All ports
Port999/UDP
puprouterPort
999
Protocol
UDP
Category
Well-Known
Service
puprouter
What is port 999?
Port 999/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the puprouter service.
Useful commands
nmapnmap -p 999 -sV example.comnetcatnc -zv example.com 999curlcurl -v http://example.com:999/telnettelnet example.com 999bash(echo > /dev/udp/example.com/999) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 999/udpDeny
sudo ufw deny 999/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 999 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 999 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=999/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 999" dir=in action=allow protocol=UDP localport=999Security 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- Outdated versions with vulnerabilities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 999/UDP?
Port 999/UDP is associated with the puprouter service. No detailed description is available in the IANA registry.
Is it safe to expose port 999 to the Internet?
It depends on the service and configuration. Port 999 (puprouter) 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 999 is open?
You can use nmap: `nmap -p 999 -sV example.com`, netcat: `nc -zv example.com 999`, or the bash command: `(echo > /dev/udp/example.com/999) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 999 on my firewall?
On Linux with UFW: `sudo ufw allow 999/udp` (open) or `sudo ufw deny 999/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 999 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 999" dir=in action=allow protocol=UDP localport=999`.
What applications and services use port 999?
Port 999/UDP is used by the puprouter service. Specific uses depend on the software and configuration. Check our related tools section for more information.