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Winsock

Posted on 2003-10-23
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Last Modified: 2010-04-01
I need an application I am writing in C++ to be able to use WinSock (or other method) to block all TCP/IP sockets at the click of a button (and obviously resume the traffic). Does anyone how I would go about this in C++? Thanks.
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Question by:dwgebler
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jhance earned 500 total points
ID: 9611067
1) This is not a C++ language question.  It's a Windows programming question.

2) WINSOCK is not able to do this.  You want to program such an application using the NDIS Intermediate driver interface.  See: http://www.rawether.net for information and a toolkit.  There is also an NDIS IM sample in the Windows 2000 and XP DDK.
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by:gdean
ID: 9622062
Id tend to agree with jhance on #1, however could you go into greater detail as to what you mean by block all traffic?  Maybe describe in a little more detail the design of your program.  Are you trying to stop communication internally to your app or throughout the entire system?

mulitthreaded/iterative/async/overlapping? server/client? etc...
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by:dwgebler
ID: 9623037
I nned my app to be able to block all internet traffic, but I am not a networking programmer so I've no experience in this. I guess blocking the ports for TCP/IP communication is what I want to do (and of course enable it again as well). Is there any way to do this without a lot of complex networking knowledge? I use Norton Internet Security 2003 and it notably has the kind of thing I need for this project as one of its features. You can click a button to block all traffic and resume it any point.
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by:gdean
ID: 9623949
I agree with jhance
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