In the Event Report Configuration, I set up an report for WiFi Client Connection like this:
but I also get SMS on Client disconnected. The Event Subtype seems disregarded.
One remark: The event name "New Wifi Client" is misleading: sounds as if known clients are not reported, but they are. Maybe leave out the word "new", since this is what it is: (any) WiFi client connecting.
Another question: (How) is it possible to filter these events? In this case, I want only SMS from a specific device connecting to WiFi. Is there any configuration file I could edit? Where is the magic happening? Is there a certain script I could modify, as a last resort?