OpenVPN with Google WiFi

nct_jr

Hello, this is my first OpenVPN setup. I'm not 100% sure it can be done with my current environment and from what I Googled so far, I believe my issue is with my Google WiFi Mesh and not having the ability to change the NAT setting. (VPN SubNet to my Local Subnet)

I am able to connect clients to the server and the VPN Setup seems correct, but my goal is to pass all traffic through the Server. When enabling "redirect-gateway def1 bypass-dhcp", Clients cannot access anything.

If I'm troubleshooting a dead end please let me know. Thanks!

My Setup:

Server Side: Modem to Google WiFi (Gen 1) - OpenVPN (Community OpenVPN-2.5.0-I601-amd64) is installed on a Windows 10 2004 box.
(UDP 1194 is forwarded)
Since I believe the issue is with NATing my VPN subnet to my Local subnet, I attempted the following Configs
server 10.8.0.0 255.255.255.0 --> Default VPN Client Addresses
server 192.168.86.0 255.255.255.0 --> Google WiFI DHCP, hoping to pick up correct routing - Do not think this will because 192.168.86.1 is now both VPN Server and Google WiFi (GateWay)

Client-Side: Modem to Google WiFi (Gen 2) Local Network is 192.168.85.X and all clients are Android Devices (No iOS or Windows machines have been tested)

Server Config settings:
dev tun
dev-node OpenVPN-TAP
topology subnet
push "route 192.168.86.0 255.255.255.0"
push "route 192.168.85.0 255.255.255.0"
push "redirect-gateway def1 bypass-dhcp"
push "dhcp-option DNS 8.8.8.8"
push "dhcp-option DNS 8.8.4.4"

nct_jr

Bump... can anyone think of something to try?

TinCanTech

Does your server have a public IP address ?

Yes - See https://forums.openvpn.net/viewtopic.php?f=30&t=22603
No - Get a public IP address

nct_jr

Thanks for the reply, but the link only confirmed my assumption about a NATing issues. So, I continued to search and found this solution which resolved my issue. https://forums.openvpn.net/viewtopic.php?t=20765

Sharing my Internet via the Network Connection might not be the "best" way, but it is working for me.

Thanks!