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Re: Read Only Ethernet Cable
From: Rory <nazgul () csn ul ie>
Date: Wed, 12 Feb 2003 18:14:06 +0000 (GMT)

I'm assuming here by the information you've given so if i'm wrong please
correct me. You want to make a cable that allows the traffic to go in one
direction. the idea being that your snort box does not send information
just receives it. I don't think you can do this with a special cable as
ethernet need to be able to send acks back to let the sending side know
that it received that data. So you will need to do this at OS level not
with a special cable. If you were to do what you were suggesting the
sending box would send only the number of packets in the TCP window and
that would be it (it mayt resend them but in the end it will just be a
small set of information ). you will need to do this with chain rules.

If my assumptions were totally wrong sorry.

cheers,
Rory

On Tue, 11 Feb 2003, Naman Latif wrote:

Hi,
Can anyone tell me how to make a Read-Only Ethernet Cable to be used
with Snort\Sniffer

IS this correct

LAN           Snort\Switch
1          1
2          2
3----------3
4
5
6----------6
7
8

Then on both sides, connect 1&2 to eachother ?

\\ Naman



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