Now that the tunnel is online, you need to tell all of your traffic to be NAT’d properly.

Navigate to Firewall → NAT → Outbound.

• Select Manual Outbound NAT rule generation.
• Press Save.

Then multiple rules will appear.

Against the rule Auto created rule - LAN to WAN, click on the icon on the right side that looks like two page (a square overlapping another square).

In the window that pops up:, the only selection you will be changing is the Interface” section.

• Interface: Click the drop-down and change from WAN to the name of the Interface you created previously, in this case VPN_WAN.
• Click Save.