I recommend keeping your network closed for maximum security, but if you have a service or two behind the firewall and need to access them from the outside, safely opening up the LAN is possible.

Considering OPNsense for your home network? 5 key questions to determine if this powerful, open-source router and firewall ...

OpenVPN's network security solutions provide scalable, secure remote access — giving complete freedom to your employees to work outside the office while securely accessing SaaS, the internet ...