I have two machines running docker. A (powerful) and B (tiny vps).
All my services are hosted at home on machine A. All dns records point to A. I want to point them to B and implement split horizon dns in my local network to still directly access A. Ideally A is no longer reachable from outside without going over B.
How can I forward requests on machine B to A over a tunnel like wireguard without loosing the source ip addresses?
I tried to get this working by creating two wireguard containers. I think I only need iptable rules on the WG container A but I am not sure. I am a bit confused about the iptable rules needed to get wireguard to properly forward the request through the tunnel.
What are your solutions for such a setup? Is there a better way to do this? I would also be glad for some keywords/existing solutions.
Additional info:
- Ideally I would like to not leave docker.
- Split horizon dns is no problem.
- I have a static ipv6 and ipv4 on both machines.
- I also have spare ipv6 subnets that I can use for intermediate routing.
- I would like to avoid cloudflare.
“Technically correct” is the best form of correct. Though having tried setting up Wireguard in the past, having a dead-simple solution like Tailscale might be worth trying it out, especially with the 100 device free tier