We’ve had some commands in the past that you could send via URL:
http://192.168.0.100/1/restartsoftware
http://192.168.0.100/1/stopsoftware
http://192.168.0.100/1/reboot
http://192.168.0.100/1/poweroff
All of that worked once. Now none of it works. Tested with Firefox and IE. Try it with your IP…