Router Syslog is a very simple and free tool. It allows you to monitor the activity that occurs on your router, providing you with all the information stored there.
In Router Syslog you must indicate the corresponding IP of the router and it will show you all the relative information that has been stored in the log file of said router. This information allows you to export it to a text format file named syslog_date.txt.
So you will have the information of each day of the behavior of the different incidents, activities and events that occur within the router.
You can free download Router Syslog 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.