All ports
Port1718/UDP
h323gatediscPort
1718
Protocol
UDP
Category
Registered
Service
h323gatedisc
What is port 1718?
Port 1718/UDP is a Registered port, registered with IANA for specific applications. It is associated with the h323gatedisc service.
H.323 Multicast Gatekeeper Discover
Useful commands
nmapnmap -p 1718 -sV example.comnetcatnc -zv example.com 1718curlcurl -v http://example.com:1718/telnettelnet example.com 1718bash(echo > /dev/udp/example.com/1718) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 1718/udpDeny
sudo ufw deny 1718/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 1718 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 1718 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=1718/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 1718" dir=in action=allow protocol=UDP localport=1718Security 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- Outdated versions with vulnerabilities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 1718/UDP?
Port 1718/UDP is associated with the h323gatedisc service. H.323 Multicast Gatekeeper Discover
Is it safe to expose port 1718 to the Internet?
It depends on the service and configuration. Port 1718 (h323gatedisc) 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 1718 is open?
You can use nmap: `nmap -p 1718 -sV example.com`, netcat: `nc -zv example.com 1718`, or the bash command: `(echo > /dev/udp/example.com/1718) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 1718 on my firewall?
On Linux with UFW: `sudo ufw allow 1718/udp` (open) or `sudo ufw deny 1718/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 1718 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 1718" dir=in action=allow protocol=UDP localport=1718`.
What applications and services use port 1718?
Port 1718/UDP is used by the h323gatedisc service. Specific uses depend on the software and configuration. Check our related tools section for more information.