Monitoring incoming and outgoing trafic from browsers/skype/icq/yahoo/messenger etc

Question

I am looking to build an application that monitors all traffic from social programs like skype/icq/yahoo/messenger, that means whats being sent and whats being received. This will also later include browsing tracking, what websites are visisted and so on, and I am probably searching for a "sniffer" of somekind, but I really dont know where to start. I have read about Wireshark and Wincap that should be a .net library for doing this? But i tried that once and i got aloooot of strange text, so i was looking for a simplier way of getting the data and then filtering out the information that i need. Can anyone lead me on the right track here?

Like what program should I focus on for this kind of purpose and what can we do to filter out text that i dont want ? And will it take alot of memory/cpu doing the "sniffing" part?

Application will be built in c# .net 4.0 so the "wrapper" or sniffer must be ablet o work with c# code.

Any tips about more packet sniffers that i can read about is appreciated! And any kind of links for me to read on or tutorials are always welcome!

Answer 1

I think you can use FiddlerCore for this. Here is a sample showing how to use it with c#.

Fiddler.FiddlerApplication.BeforeRequest += sess=>
    {
        Console.WriteLine("URL: " + sess.fullUrl);
        sess.bBufferResponse = true;
    };


Fiddler.FiddlerApplication.Startup(8877, true, true);

Console.ReadLine();

Fiddler.FiddlerApplication.Shutdown();
System.Threading.Thread.Sleep(750);