I've got the Rig Manager working with my Kemper on my local home network. The catch is you need a device at the other end to plug the Kemper into, either an RPi, Linux system, Windows or iOS machine. I've plugged mine into my nearby NAS unit.
All you need is here, and use the option on my screenshot for the connection:
VirtualHere Server (for Win, Linux, iOS, QNAP, Synology, Android etc)
VirtualHere Client (for Win, Linux, iOS etc)
Setup the server software on the device/machine most conveniently near your Kemper, then use the client to connect as per my screenshot. There are no settings to concern yourself with. A motivated person could use a small USB powered linux device (Raspberry Pi) etc, or PoE device in conjunction with the PoE/footswitch and WiFi setup elsewhere and be able to hit the Kemper anywhere, anytime. With some fancy port forwarding etc you can easily make this work via the Internet too.
How's the latency? Well on my NAS, when its not busy, the client is reporting < 1ms. So yeah, decent.
I don't think this requires more of a tutorial than above, its really quite straightforward. Good luck! VirtualHere server has a demo time (15 days or something) then after that it is $49 for an unlimited lifetime license - which is peanuts for adding this functionality to your Kempers!