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I managed to install the openvpn using the script [1] and able to connect on MAC OSX.

However, the default option is all traffic now route thru the VPN IP.

Is it possible to route traffic using this VPN only when the destination IP is X.X.Y.Z

For the reset of traffic, just use it without the VPN.

[1] https://github.com/Nyr/openvpn-install

0
8

If you control the server then you can push specific routes by adding directives to your config file e.g.

push "route X.X.Y.Z 255.255.255.255"
push "route 192.0.2.0 255.255.255.0"

You will likely also want to remove the redirect-gateway directive (if used).

If you want to do this on the client side then you will need to ignore the pushed routes and then configure your own by adding directives to the client config e.g.

route-nopull
route X.X.Y.Z 255.255.255.255
route 192.0.2.0 255.255.255.0

Both of which will case the specified host/network to be routed over the VPN.

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  • 1
    What is ` 192.0.2.0`?
    – Ryan
    Jan 14 '18 at 13:38
  • 3
    Good question @Ryan - it's OK to want an answer from a human being sometimes, even the answer might be quickly available through impersonal methods. en.wikipedia.org/wiki/Reserved_IP_addresses identifies the subnet 192.0.2.0-255 as reserved for use in documentation and examples. So it's a good choice for the example in the answer.
    – mwfearnley
    Mar 19 '20 at 10:20

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