Secure portal between Internet and internal services - eviltoast

I thought I was going to use Authentik for this purpose but it just seems to redirect to an otherwise Internet accessible page. I’m looking for a way to remotely access my home network at a site like remote.mywebsite.com. I have Nginx proxy forwarding with SSL working appropriately, so I need an internal service that receives the traffic, logs me in, and passes me to services I don’t want to expose to the Internet.

My issue with Authentik is if I need to access questionable internal websites I have to make an Internet accessible subdomain. I don’t want authentik.mywebsite.com to redirect to totallyillegal.mywebsite.com. I want it to redirect to 10.1.1.30:8787.

Is there anything that does that?