Source Code:
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/*
* Created on 2005-3-22
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
/**
* @author whandey connect to me: whandey@163.com
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
import java.io.*; import java.net.*; import java.util.*; public class SocketPort { public static void main(String[] args) { String ip = "10.10.1.1"; String hostname = new String(); try{ //get the target ip address and hostname InetAddress address = InetAddress.getByName(ip); System.out.println(address); hostname = address.getHostName(); System.out.println(hostname); } catch(UnknownHostException e){ System.out.println("Could not find "+ ip); } try{ // creat the output file PrintWriter fout = new PrintWriter( new FileWriter("PortInf.txt")); fout.println("Information Of The Port On the " + hostname +"computer "); System.out.println("Information Of The Port On the " + hostname +"computer "); fout.println(); // do ports scan for(int nport = 24;nport <= 60;++nport){ try{ Socket s = new Socket(hostname,nport); fout.println("The port " + nport + " is open!"); System.out.println("The port " + nport + " is open!"); fout.println("Connected to "+ s.getInetAddress() + " on port " + s.getPort() + " from port "+下面是程序运行结果:
s.getLocalPort() + " of " + s.getLocalAddress()); System.out.println("Connected to "+ s.getInetAddress() + " on port " + s.getPort() + " from port "+
s.getLocalPort() + " of " + s.getLocalAddress()); //print the connected socket information } catch(IOException e){ fout.println("The port " + nport + " is closed!"); System.out.println("The port " + nport + " is closed!"); } } fout.close(); } catch(IOException e){} } }
C:\java>
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