All ports
Port12009/UDP
ghvpnPort
12009
Protocol
UDP
Category
Registered
Service
ghvpn
What is port 12009?
Port 12009/UDP is a Registered port, registered with IANA for specific applications. It is associated with the ghvpn service.
Green Hills VPN
Useful commands
nmapnmap -p 12009 -sV example.comnetcatnc -zv example.com 12009curlcurl -v http://example.com:12009/telnettelnet example.com 12009bash(echo > /dev/udp/example.com/12009) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 12009/udpDeny
sudo ufw deny 12009/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 12009 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 12009 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=12009/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 12009" dir=in action=allow protocol=UDP localport=12009Security 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- Outdated versions with vulnerabilities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 12009/UDP?
Port 12009/UDP is associated with the ghvpn service. Green Hills VPN
Is it safe to expose port 12009 to the Internet?
It depends on the service and configuration. Port 12009 (ghvpn) 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 12009 is open?
You can use nmap: `nmap -p 12009 -sV example.com`, netcat: `nc -zv example.com 12009`, or the bash command: `(echo > /dev/udp/example.com/12009) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 12009 on my firewall?
On Linux with UFW: `sudo ufw allow 12009/udp` (open) or `sudo ufw deny 12009/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 12009 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 12009" dir=in action=allow protocol=UDP localport=12009`.
What applications and services use port 12009?
Port 12009/UDP is used by the ghvpn service. Specific uses depend on the software and configuration. Check our related tools section for more information.