Hello FLOOD!
Thanks for your fast answer.
1. i do not have a raspberry pi hooked up now, but am planning to use a Pi 3B with Raspbian +Pihole. altough i am open to suggestions
2. Router: ADB VV5522, Version ADBB-GX13013A, but with custom firmware from my ISP(preinstalled)
3. Whatever works i guess. my ideal goal would be to encrypt my whole home-network, if via KSC on my raspberry or through router does not matter.
if that's not possible i would encrypt the fireTV. all other devices have fitting KSC Applications(PC/Mobile Phones)
thanks for your Advice!