Configure another port in OPNsense for this net and also Plug in to modem
Please reread my again. It explains it ...
Dont you have a third interface?
I noticed something strange: when I activate the manual mode of the NAT OUTBOUND, I can no longer browse on the Internet. How come? Should I create some rules by chance? If so, which?
When I had the firewall with pfSense, I could still access the router from the LAN and always used the PPPoE protocol to access the Internet. Now, why can't I do it anymore with OPNsense?