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My company has three subnets total of which two subnets have the same set of ip addresses... 192.168.0.x. This has not been an issue before but we are going to establish a VPN connection between two routers. So now my network will look like the above diagram.

Client A is a standard windows desktop box with two nics installed. Windows default settings. No bridging. Here is how I would like each machine to function...

Client A --> 192.168.0.70 --> Client C

Client B --> 192.168.0.70 --> Client D

My understanding is that by default windows routes outgoing traffic according to each NIC's ip address. If so after I establish the VPN the routing should be functioning as descried correct? If not what can I do to get that functionality?

P.S.

I do realize the ideal thing to do would be changing one of my 192.168.0.x subnets to something else. For reasons outside my control this is not an option.

abaldwin99
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1 Answers1

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This is a bad idea.

Ok, that being said, as long as Client D will never, ever need to get to anythng on Client C or it's subnet this might work. Client A should have it's default gateway set on the NIC in the 192.168.111.0 subnet, and the NIC on the 192.168.0.0 subnet MUST NOT HAVE a default gateway set. Or your packets will be very confused as to where to go.

I cannot stress enough how bad of an idea this is. Especially if there is going to be more than one machine configured like Client A.

Mr. Smythe
  • 683