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AnswerRe: question about port scanning Pin
mikone10-Oct-06 4:43
mikone10-Oct-06 4:43 
Hi!

I'm not sure about this but you could try to do it like this:

<br />
System.Net.Sockets.TcpClient myclient = new System.Net.Sockets.TcpClient();<br />
for (int i = 0; i < 65535; i++)<br />
{<br />
   try<br />
   {<br />
     myclient.Connect("localhost", i);<br />
     // Client was able to connect, hence the specified port 'i' is open...<br />
   }<br />
   catch<br />
   {<br />
     // An Exception was thrown, hence there was a problem while connecting.. port 'i' closed?<br />
   }<br />
}<br />


This method is obviously not the best because it uses a try..catch statement and it will also throw an exception if a particular port is blocked by another application.
To get around this issue you will have to extend the exceptionhandling massively.

That's how i would do it but as already mentioned i'm pretty unexperienced...

Good luck,
mik

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