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this post was submitted on 14 Jun 2023
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Here is my setup:
Cloudflare fronts all of my webserver traffic, and I have firewall rules in Cloudflare.
Then I have an OPNsense firewall that blocks a list of suspicious ips that updates automatically, and only allows port 80/443 connections from Cloudflare's servers. The only other port I have open is for Wireguard to access all of my internal services. This does not go through Cloudflare obviously, and I use a different domain for my actual IP. I keep Vaultwarden internal for extra safety.
Next I run every internet facing service in k3s in a separate namespace. This namespace has its own traefik reverse proxy separate from my internal services. This is what port 80/443 forwards to. The namespace has network policies that prevent any egress traffic to my local network. Every container in the WAN facing namespace runs as a user with no login permission to the host. I am also picky about what storage I mount in them.
If you can get through that you deserve my data I think.
I need to learn more about cloudflare. Do you have the guide for this setup!
Unfortunately no guide, just things I've pieced together myself over the years.
Cloudflare is probably the easiest and most intuitive part of the setup though, you can setup dns/proxy/firewall rules very intuitively, and I'm sure there are plenty of guides out there.