In ZenCash they are called SecureNodes. Smaller payout, smaller reward, but still good ROI.

Secure Nodes are in development still, expected launch in September/October. Tracking system is in alpha testing, you can see progress and join in testing on the Slack #securenodes channel.

For a guide on how to set up the Zen Node and SSL cert, see here:
https://blockoperations.com/build-zencash-secure-node-part-1-prepare-vps/

Part 3 will show how to set up the tracking application on the server, but that is not until development is done.