Password protect your services, set up your web server correctly, use cloudflare for some extra security against stuff like DDoS/DoS attacks. Also less is more, do not expose what you don’t need to expose.

There is always inherent risk with opening up your stuff to the world wide web.

Some stuff you can’t even secure yourself; some services just have bad security practices. The only way to fix them would be to wait for an update or submit a pull request.

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.