Re: Please suggest me

From: Richard B. Johnson (
Date: Fri Jul 20 2001 - 14:18:44 EST

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.

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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This archive was generated by hypermail 2b29 : Mon Jul 23 2001 - 21:00:13 EST