When you're not at home how do you access your stuff?
The oldest, easiest and most well-known way of enabling remote access to your PMS. It's also the least secure. Opening a port in your firewall should be a last resort and honestly, avoided unless absolutely neccessary.
Accessing your server remotely could be crucial to your long term sanity and adoption of PMS. Here is how to manage the system from a mobile device successfully - optionally use Wireguard to avoid opening ports in your firewall and still maintain access.