Monitoring the network

[khajalid]

I am a B.Tech. final year student and making major project similar to that of cyber roam.I want to know how do I come to know that any packet has been arriving in the gateway at application level in Java.

[fishtoprecords]

I'm not sure that you can. This stuff is usually filtered out before it gets to the application layer.

It can be done at kernel level with C, (or very close to kernel level) which is what wireshark, kismet and other open source packages do. Since they are open source, you can get the source and see how they do it.

[Nicholas Jordan]

I'm not sure that you can. ...

I have a copy of "Java Network Programming", in which the author says that java runs on top of tcp/ip - and that it can be a great tool for developing protocols but largely insulates the tcp/ip stack from java programs. I also have a book on IPv6 from Pete Loshin - I do not see the ip stack being exposed in Java anytime soon, though it is possible to get the ip address of the request.

It may be possible for poster to ip but doubt seriously doubt individual packets could be observed before they are re-assembled.

[khajalid]

Thank you sir, Can i get the copy of Java Network Programming from you if you have no problem.