If you’re self-hosting any services, you’ll want a reverse proxy as another layer of defense.
Once your home network starts getting more complex, like if you were to start self-hosting apps and services, you might want to consider setting up a reverse proxy to shield those services from the internet. This is essentially another server that sits between the device your self-hosted apps are on and the internet, but instead of providing access outward to the internet, it provides access to those apps.