I want to be able to search for content on my phone, then have it automatically downloaded and posted to plex, so that I don't have to fuck around so much every time I want to backup a show.
I am running Plex (on a TrueNAS Core box), Radarr, Sonarr, and QbitTorrent today. I have a preferred tracker.
What other apps do I need to make it easy to find out of a show is avaliable, automatically hand it off to Radarr/Sonarr then download it and move it to my NAS share then get Plex to refresh and tell me it's done?
You're absolutely not to run them without a VPN or other authentication portal in front of them.
Why would you even give them that much access? By default, all they can do is check feeds from sites and forward links to your download client. I haven't heard of any of these vulnerabilities and a quick Google search finds nothing mentioning this.
It sounds like someone port forwarded a bunch of software and found out why that isn't a good idea (or necessary) the hard way.
I'm not the person to answer the quesrion, I'm advocating for hot opening it up to the internet.