This is an updated version of this guide. I hope it gets moved soon to the guides section. This guide should be complete now, but please note that the IPv6 port forwarding might not be 100% complete. Any advice is appreciated.   Disclaimer In general, DO NOT TRUST ME! I'm not a security expert. I do not know what I'm doing here!  This guide is based on: OPNsense 24.7.12_4-amd64 FreeBSD 14.1-RELEASE-p6