send packets out the same interface it arrived on

[thetevfik]

My questions seems rather an easy one but I couldnt make it work.
I have servers behind Netgate Firewall and two wan interfaces.
I want packets arriving from wan1 to leave again from wan1. Same goes with wan2.
I want packets arriving from wan2 to leave again from wan2.
In my case all packets regardless of their arriving interface, leave the inteface where default gw is.
Both modems I have are performing destination NAT.

Any hint will be appreaciated.

[viragomann]

@thetevfik said in send packets out the same interface it arrived on:

I want packets arriving from wan1 to leave again from wan1. Same goes with wan2.
I want packets arriving from wan2 to leave again from wan2.

I guess, you're talking about responds packets on request from outside.
So that's the default behaviour in pfSense, it is controlled by the "reply-to" flag, which is added to any packet coming in on an interface which has a gateway is defined on. However, there are some requirements:

• The rule allowing the respective access in pfSense must not be a floating rule.
• The rule allowing the respective access must not be a defined on an interface group.

So probably you have to check if these requirements are given on your pfSense.

[thetevfik]

Bull's-eye. The answer I was looking for. Thank you @viragomann very much