Filtering unwanted packets at ethernet interface level

[Amit Walambe]

Hi Russell,
On Wed, 25 Jul 2007 15:28:55 -0400
"Russell Harmon" <eatnumber1 at gmail.com> wrote:
> On 7/25/07, Amit Walambe <awalambe at arcom.com> wrote:
> > That brings me to the question : Is there any way in Linux kernel so
> > that we can filter out unwanted packets at the physical layer,
> > rather than to bring them up all the way to network stack?
> AFAIK, hardware level packet filtering can only be done by very
> expensive network cards or a motherboard with a nforce4 chipset (it
> has a hardware level firewall which should handle this too). Most (all
> that I know of except the nforce4) common network adapters do not
> support hardware level packet filtering.
Thanks a lot for your reply and further pointers. 
Best Regards,
-- 
Amit Walambe
Design Engineer, Arcom Control Systems Ltd.  
http://www.arcom.com 
Tel: +44-(0)1223 411200 ext. 3204 
Direct: +44-(0)1223 403465

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