Re: how to set default route on multihome

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On 1/24/20 9:54 AM, sean darcy wrote:
I'm trying to set up a dmz between my internal network and the router. Interface A for internal, interface B for the router. How do I make sure the default route is set to interface B ?

Hi Sean,

I can give you the manual method for ipv4.

For traffic to cross between the two interfaces forwarding must be enabled. That is done in sysctl.conf

net.ipv4.ip_forward=1

Then the default route is assigned to the router interface:

ip route add default via <gateway_ip> dev <router_interface>

Very straight forward.

HTH
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