2 public IP's in separate subnets on same WAN interface
For reasons, I need to configure two public IPs from the same provider on the same physical uplink. The addresses are in different subnets and each has its own gateway.
I cannot find any way in Fireware to define two separate gateways on a single physical External interface. Maybe I’m just blind.
Adding the second address as a Secondary Network does not solve the problem because it inherits the interface’s existing gateway. Meanwhile, pfSense lets you slap multiple gateways onto one interface and use policy routing. I assumed that, for roughly €3K per year, a €10K appliance could manage the same trick.
Yes, I know the workarounds:
“Don’t use a secondary IP.” “Put a switch in front and waste two physical Firebox interfaces on the same ISP uplink.” “Move the services to another port.” (it is not about services) “Ditch the Firebox and use pfSense.”
What I actually want to know is: what is the native, clean Fireware method for configuring two public IPs - with their respective gateways - on the same physical WAN interface, without wasting another physical port or putting another router/switch in front?