Can i route output traffic generated by input traffic to an interface different from the input traffic?

Question

I have two internet connection, one fiber and one 4g

Can i route the output traffic trough 4g generated by the input traffic of the fiber to an interface different from the origin ?

Idea is to benefit of the uplink bandwith of the 4g and the downlink bandwith of the fiber.

I saw that we can configure asymetric routing

I m using pfsense.

Answer 1

Solution:

If i want my output traffic to exit on 4g wan interface, i have to put 4g wan interface as default gateway.