All ports
Port18516/UDP
heythingsPort
18516
Protocol
UDP
Category
Registered
Service
heythings
What is port 18516?
Port 18516/UDP is a Registered port, registered with IANA for specific applications. It is associated with the heythings service.
HeyThings Device communicate service
Useful commands
nmapnmap -p 18516 -sV example.comnetcatnc -zv example.com 18516curlcurl -v http://example.com:18516/telnettelnet example.com 18516bash(echo > /dev/udp/example.com/18516) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 18516/udpDeny
sudo ufw deny 18516/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 18516 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 18516 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=18516/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 18516" dir=in action=allow protocol=UDP localport=18516Security 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- Outdated versions with vulnerabilities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 18516/UDP?
Port 18516/UDP is associated with the heythings service. HeyThings Device communicate service
Is it safe to expose port 18516 to the Internet?
It depends on the service and configuration. Port 18516 (heythings) 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 18516 is open?
You can use nmap: `nmap -p 18516 -sV example.com`, netcat: `nc -zv example.com 18516`, or the bash command: `(echo > /dev/udp/example.com/18516) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 18516 on my firewall?
On Linux with UFW: `sudo ufw allow 18516/udp` (open) or `sudo ufw deny 18516/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 18516 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 18516" dir=in action=allow protocol=UDP localport=18516`.
What applications and services use port 18516?
Port 18516/UDP is used by the heythings service. Specific uses depend on the software and configuration. Check our related tools section for more information.