Hello,
At the moment, to have control/monitoring capabilities of data consumption, you would need to use HotSpot feature, for which you might need to download a package from Services -> Package manager list. It allows to configure user group templates, where you can set limits for upload/download data and bandwidth. But it only applies for wireless clients.
For a very basic view of currently active connections, WebUI has a Status -> Realtime Data -> Connections monitoring window.
A more detailed connections and traffic data can be obtained by installing Darkstat package. You can install it with the following commands:
- opkg update
- opkg install darkstat
- /etc/init.d/darkstat enable
- /etc/init.d/darkstat start
Then open your browser and enter router's IP with added 667 port:
Host section can provide quite detailed statistics on each IP address monitored by the application.
Alternatively, you can install TCPdump from Services -> Package manager, enable TCP dump monitoring for mobile wwan0 (mob1s1a1_4) interface in System -> Administration -> Troubleshoot and download the file later from the same page.
Data here should provide sources of data consumption.
Best regards,