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Routing multiple subnets through 1 interface on AWS

fscalzo
I have a standard installation created 

public network to single private network

I'm trying to get my other subnets to route  through the same interface

so internal interface is 10.100.40.X routes out fine and anything on that subnet works fine.

I want to also get subnet 10.100.45.x and 10.100.35.X to also go through the same interface  and not add more interfaces I have done it once before and forgot how I did it.

this is on an AWS VPC on 1 AZ


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    you will need other routers for the other subnets or on the UTM create a larger network like 10.100.32.0/20 which includes everything from 10.100.32.0 to 10.100.47.255 while keeping /24's on your subnets.
    With other router(s) you'll have to create static routes to the other networks and vice versa and you will need masquerading (and firewall) rules for those networks.
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    you will need other routers for the other subnets or on the UTM create a larger network like 10.100.32.0/20 which includes everything from 10.100.32.0 to 10.100.47.255 while keeping /24's on your subnets.
    With other router(s) you'll have to create static routes to the other networks and vice versa and you will need masquerading (and firewall) rules for those networks.
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