I have a small public WiFi network where I need to keep track of the number of monthly users. With a single Linksys E4200, I can use the firmware's DHCP client log. I dump the log and use a script to count the number of unique MAC addresses per day.
With three E4200s I haven't been able to do this. One router is connected to the modem. The other two are connected to the first router by Ethernet and are running in Cisco's bridge mode, which basically turns them into access points. The problem is that this disables the logs on these routers, and the log on the first router seems to only display the wireless clients of that router.
Does anyone have suggestions for counting WiFi users? I imagine I could try another firmware. This thread seems to suggest that DHCP client logging is trivial in Tomato, but this is only for a single router, not my setup. Does anyone have any experience with a router and a couple APs using Tomato or DD-WRT? Is DHCP client logging possible in this situation? Is there a better solution (but using my current hardware) I'm missing?
Thank you very much for your help.