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Date: Fri, 20 Jul 2001 15:18:44 -0400 (EDT)
From: "Richard B. Johnson" <root@chaos.analogic.com>
Reply-To: root@chaos.analogic.com
To: Dipak Biswas <dipak@monmouth.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: Please suggest me
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On Fri, 20 Jul 2001, Dipak Biswas wrote:

> Hi All,
>     I'm quite new to linux world. I've a very awkard question for you.
> That is: I'm writting an user process, where I need all outgoing
> IP packets to be blocked and captured. First, is it really possible? If
> yes, how? I don't want to make any kernel source code changes. A wild
> guess: by configuration changes, is it possible to make IP process write
> on to a particular FD which I can read when I require?
> 
> Thanks,
> dipak
> 

Get the source-code of `tcpdump` and see how packet capturing is done.
You can also look at `ipchains` to see how to block packets.

Cheers,
Dick Johnson

Penguin : Linux version 2.4.1 on an i686 machine (799.53 BogoMips).

    I was going to compile a list of innovations that could be
    attributed to Microsoft. Once I realized that Ctrl-Alt-Del
    was handled in the BIOS, I found that there aren't any.


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