netdev - Re: question on raw sockets and source IP address validation

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Message-ID: <4ABBCA87.2040002@nortel.com>
Date:	Thu, 24 Sep 2009 13:37:43 -0600
From:	"Chris Friesen" <cfriesen@...tel.com>
To:	Neil Horman <nhorman@...driver.com>
CC:	Linux Network Development list <netdev@...r.kernel.org>
Subject: Re: question on raw sockets and source IP address validation

On 09/24/2009 01:26 PM, Neil Horman wrote:

> That said, its not doing source validation, your socket is actually doing a
> route lookup on the flow from your specified source address to your destination
> address.  So you should be able to fool the socket into doing the lookup by
> adding a route to your routing table from your source address to your
> destination address via the interface that you want to send the frames out of.

Hmm...that's an interesting point.  Worth investigating for sure.

Thanks,

Chris

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