Port Scanner In Java Example

Chapter: Networking Last Updated: 21-07-2016 11:24:31 UTC

Program:

            /* ............... START ............... */
                
import java.net.*;

public class JavaPortScan {
	 public static void main(String []args) {
	      for (int port = 1; port <= 65535; port++) {
	         try {
	            Socket socket = new Socket();
	            socket.connect(new InetSocketAddress("localhost", port), 1000);
	            socket.close();
	            System.out.println("Port " + port + " is open");
	        } catch (Exception ex) {
	        }
	      }
	   }
}

                /* ............... END ............... */
        

Output

Port 22 is open
Port 53 is open
Port 80 is open
Port 111 is open
Port 631 is open
Port 3306 is open
Port 48360 is open

Notes:

  • A port scanner is a software application designed to probe a server or host for open ports.

Tags

Port Scanner , Java

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