All ports
Port18187/UDP
opsec-elaPort
18187
Protocol
UDP
Category
Registered
Service
opsec-ela
What is port 18187?
Port 18187/UDP is a Registered port, registered with IANA for specific applications. It is associated with the opsec-ela service.
OPSEC ELA
Useful commands
nmapnmap -p 18187 -sV example.comnetcatnc -zv example.com 18187curlcurl -v http://example.com:18187/telnettelnet example.com 18187bash(echo > /dev/udp/example.com/18187) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 18187/udpDeny
sudo ufw deny 18187/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 18187 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 18187 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=18187/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 18187" dir=in action=allow protocol=UDP localport=18187Security 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- Outdated versions with vulnerabilities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 18187/UDP?
Port 18187/UDP is associated with the opsec-ela service. OPSEC ELA
Is it safe to expose port 18187 to the Internet?
It depends on the service and configuration. Port 18187 (opsec-ela) 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 18187 is open?
You can use nmap: `nmap -p 18187 -sV example.com`, netcat: `nc -zv example.com 18187`, or the bash command: `(echo > /dev/udp/example.com/18187) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 18187 on my firewall?
On Linux with UFW: `sudo ufw allow 18187/udp` (open) or `sudo ufw deny 18187/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 18187 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 18187" dir=in action=allow protocol=UDP localport=18187`.
What applications and services use port 18187?
Port 18187/UDP is used by the opsec-ela service. Specific uses depend on the software and configuration. Check our related tools section for more information.