Access to local network via openvpn gateway

screeble

Hi everybody,

Is there any way to get access to local network from Internet via OpenVPN gateway?
For example: There is a local network (10.10.10.*/255.255.255.0) and one host of this network is OpenVPN server(10.10.10.1). Somewhere in global network is host as OpenVPN client (his vpn IP: 10.10.10.5). When this PC connects to OpenVPN and try to accesss to local network all hosts in it are unreachable.

Any advices will be greatly aprecciated.

elpin

Yes of course. However your local network and VPN network need to be different subnets. Meaning your local network is 10.10.10.x/24 and your VPN network should be for example 10.8.0.x/24.

After this you make routing between the two networks in 3 steps:
1. In the server configuration file you put a line:

push "route 10.10.10.0 255.255.255.0"

This will make the VPN clients aware of your local network behind the OpenVPN server.

2. Enable IP Forwarding on the openvpn server machine.
This will make your OpenVPN server enable redirecting packets between different networks.

3. In the router on the local network type in a static route to redirect all traffic heading to 10.10.10.x IP addresses to your openvpn server machine (10.10.10.1)
This will enable your machines on the local network to communicate back with the OpenVPN clients.

elpin

Sorry, I wrote a mistake in the step 3. In the router you have to redirect all traffic heading for 10.8.0.0 (not 10.10.10.0) to the OpenVPN server machine.