Eddie and two ethernet cards

[Pepetops 0]

Hi all.

If I have two nics in the same PC is possible connect Eddie only to one of them and use the other for Internet without VPN?

Thanks

[OpenSourcerer 1359]

I was confronted with the same problem on one of my servers and found out that with iproute2 on GNU/Linux it's possible to create additional routing tables and assign them to different interfaces. The complication I see is that OpenVPN only ever writes to the default/first one. My research did not reveal any ways to make it do otherwise by means of configuration, but I'm open for any hints in docs and code.

[zhang888 1065]

Technically it's possible, and even quite easy, it's called policy based routing:

https://community.openvpn.net/openvpn/wiki/Concepts-PolicyRouting-Linux

https://github.com/RMerl/asuswrt-merlin/wiki/Policy-based-routing

 

The more important question is, how are you going to decide which apps would use

which interface, if they don't natively support it.

One of the common ways to do it is by using Linux Namespaces or cgroups, and instructing

each app to be using a different interface by making specific rules for it.

Some more info:

https://superuser.com/questions/271915/route-the-traffic-over-specific-interface-for-a-process-in-linux