Contoh di sistem operasi windows :
- Jalankan CMD (Command Prompt) dengan mode Administrator
- perintah telnet [domainname or ip] [port]
contoh : “telnet 192.168.1.1 80”
contoh : “telnet masteknisi.com 443”
- If the connection succeeds, a blank screen will show up, meaning that the computer port is open.
A failed connection will be accompanied by an error message. It can indicate either a closed port or the fact that the indicated remote server is not listening on the provided port.