OpenVpn - connect vpn clients to server subnet / server intranet

Programmer

1/5/24, 2:02 PM

We have installed OpenVpn community editon (v2.5.8) in windows server 2019, having multiple VMs running in Intranet (10.0.0.0/24). I want my vpn clients (10.8.0.0/24) to communicate with VMs and VMs can communicate with vpn clients, as described in below image :

Network Diagram

server config as :

dev tun
topology subnet
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txt
client-to-client
push "route 10.0.0.0 255.255.255.0"
client-config-dir ccd

We are using default client config.

Inside CCD (client1,client2 files) as :

client1 => ifconfig-push 10.8.0.11 255.255.255.0
client2 => ifconfig-push 10.8.0.12 255.255.255.0

We have enabled Packet Forwarding as [Enable Packet Forwarding][2], Vpn is working fine and vpn clients can communicate with other Vpn Clients.

We have enabled Windows Server NAT on Internal Network(10.0.0.0/24) for OpenVpnTap, So our VMs(VM1,VM2..) can easily communicate with VPN Clients. VMs can easily access/ping VPN Clients, But

Vpn clients can not communicate with Server Intranet VMs (VM1,VM2,VM3)

OpenVpn is not in Bridge and all vpn clients are on Windows 8 and above.

How can VPN Clients communicate with VM1,VM2 and VM3 ?

Do we need some additional configuration in VM1,VM2,VM3 or In VPN clients ?

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