How to know which protocol is used in data transfer and inspect that data?

Posted by user37880 on Super User See other posts from Super User or by user37880
Published on 2010-05-21T11:40:11Z Indexed on 2010/05/21 11:51 UTC
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Filed under:

Windows

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.NET

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port

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applications

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tcp

I've a .net application for windows. This application transfers a lot of data to and from a particular server on a fix port no 8888. I tried 'Tcpview' but couldn't figure out anything useful. I only figured that it uses 'tcp' connection.

Is there a way to know which protocol is used for data transfer (I think port no 8888 is not specific port so not helpful)? How exactly my machine makes connection to this server? Is it telnet/http etc or what?
How can I inspect the actual data which is being transferred?
If data is encrypted, is it possible to know encryption method on client side (without reverse engineering)?

Thanks.

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