

Hook it up to the TV and use it for big screen web/media/gaming/retro-emulation. Steam and/or Sunshine/Moonlight can be used for low-latency streaming to play games from another PC (in either direction). You can use controllers and keyboard/mouse through either streaming method or bluetooth/wireless. Also handy for occasionally streaming things that don’t have smart-TV-apps, or for services where the only functional apps are service-locked, shitty and/or “Freemium” (most IPTV apps for example). Set it up for Wake-On-LAN (or Wake-On-WiLAN if it supports it). Lots of things you can do with a PC in the living room.





It works the same way it normally works. You generate the certificate, give it to them, tell them who you are, they verify who you are, then they sign it and give it back to you. Very routine and straightforward, except for the challenge part that they use to verify your identity.
Think of it in terms of delivering a pizza. The signed certificate is the pizza in this analogy, and they don’t want to send it to you until they’re sure it’s going to the right place. Either the store can send it to you (you have to give them your address and have port 80 open for when they arrive) or you can go pick it up at the store (you give them your address, they verify it through DNS, no port 80 required).
There’s never been anything preventing you from establishing a conversation with the certificate-issuer. You don’t need port 80 open for that. However, unless you have port 80 open the issuer cannot reach out to you, and that’s how they verify you are who you say you are. DNS challenges avoid them having to reach out to you directly, instead they reach out to DNS on your behalf and verify you are who you say you are that way instead.