On Sun, Mar 28, 2021 at 11:36:00AM -0600, Frank Cox wrote:
It's a really basic setup "routers from Staples" (dlink and tplink brands I think) plugged into the ISP's modems.
You're right that you generally can't see everything from just any computer on a network, at least if it's switched. You need to watch from your gateway.
Then I'm outta luck for doing this sort of thing since the gateways are the tplink and dlink routers. I thought that might be the case.
There are two options you could explore:
* putting openwrt or another open-source firmware on those devices, if they support them.
* Use a CentOS (since that's the list!) box with two NICs as a bridge and configure that for snooping.
Or I guess option 3 would be to replace the routers with ones which do allow you use an open firmware. You could even do that temporarily just for the experiment.
And finally, an option four: some router brands have their own proprietary bandwidth monitor tools. Asus, for example. (Note that you probably can't get full gigabit speeds with this enabled on an off-the-shelf consumer router, though.)