1. What DRM's are supported?
2. Is there a list and a pages that show how to setup?
3. Will the Nimble server either request/receive an external encryption key or be able generate any natively?
4. Can Nimble server encrypt?
1. We support Verimatrix DRM at the moment: http://blog.wmspanel.com/2015/05/verimatrix-vcas-drm-live-streaming-nimble-streamer.html
2. You can take a look at our paywall feature set page: https://wmspanel.com/paywall
3. Do you mean AES encryption? http://blog.wmspanel.com/2015/02/hls-aes-encryption-drm-support-nimble-streamer.html
4. Please refer to links above.