Except that switch ports are mostly SWITCHED these days, which means that packets not destined for a particular host don't show up on the other ports of the switch at all.Normaly, you'd plug into another switch port.
You can't easily tap in to an ethernet connected electrically the signalling is much more complicated than a serial port. There are several problems trying to do this sort of thing: They key here is I need to have other people use this device as well, and they will not even be at my level, so quick an easy it must be.Thanks again. I appreciate ANY help here, and even though I have no Arduino experience, I can learn. If it could see the string data, that would be great, if I can just verify that a packet has been sent ( size would be cool) with an LED even, that would be atleast something to get me to the next step in troubleshooting a comm problem. I have issues bringing laptops into customer sites due to security reasons they implement, as well as it's usually that I am in an area where a laptop may get very dirty, burnt or dropped while I check systems ( think steel mill here). What I am asking for is something just as easy and quick to see my data string on the TCP/IP connection we now use more frequently. I have many machines that still use rs232, and for sniffing those serial ports I use a "DATABOY"(gameboy with a card made for sniffing) which is super fast and easy to use. We then calculate data and send it to modelling software that allows for chemistry changes in the process for customer requirements. I troubleshoot my companies' equipment that measures motlen metal via various thermocouples. Hello, I am reaching out for a bit of assistance here, and appreciate any feedback.
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