Ethernet sniffer

Question

Hi all, I have derived a program from the Ethernet Bypass sample.

Everything work, I can catch packets by means of registering a custom filter thru NAEthRegisterCustomPacketFn().

Only problem I have is that I only catch broadcast messages or messages directed at the board and I need to be able to inspect anything that goes past the ethernet.

Any ideas on how to get all the packets to present themselfs to me.

Regards

Answer 1

Hi Derwee,
are you sure you are not connected to a switch that is filtering packets that are not broadcast or not addressed to you ip?
Giorgio

Answer 2

That was my initial reaction that a network device is filtering my packets, currently I am running with a crossover cable with no success yet

Answer 3

The ethernet MAC has to be put in promiscuous mode otherwise it will filter out all packets that have foreign destination MAC. I believe there is a bit in some Ethernet configuration register that you can set to accomplish that.

Answer 4

Thanks, I'll go hunting for it and let you know

Answer 5

DId you find the solution?

Answer 6

@barneskg

Nope no luck, so at the end of the day we changed the design to be more specific in addressing...

Sorry