Trying to setup full tunnel from Synology NAS open vpn server to IPhone client

VPN
1

I’m running AdGuard home with unbound dns on Synology NAS and trying to create a full tunnel connection so while on mobile I can have the AdGuard DNS working on my phone via vpn.

For the life of me I can’t get full tunnel to work no matter what I try. I have a split tunnel config working as it should but when I activate the full tunnel config I’m able to access my LAN but no internet. I’ve tired pretty much every thing I’ve googled from opening ports and editing config but still haven’t had any luck.
If any1 went through this or have any help to get it fixed I’d truly appreciate it.

2

I am assuming you are following something similar to this and have all the proper forwarding/internet sharing enabled and used something similar to this to create the config
https://logyxis.netlify.app/posts/openvpn-windows-ios/

Try including in the server config:

push “dchp-option DNS ”

That might work. I also use topology subnet idk how relevant that is to getting it to work. I’m also somewhat new to setting up OpenVPNs so idk why certain things work but have been able to piece something together with the help of Google.

3

Did you end up getting this to work? Facing the same issue right now running AdGuard Home on my Synology with OpenVPN. Not sure if I should try a different VPN option instead?

4

Try uncommenting “redirect-gateway def1” in your configuration file. It worked for me.

5

I ended up running OpenVPN on my Synology router instead of my NAS. You can try running L2TP as this was the easiest to get up and running. Then if that goes well you can then venture into OpenVPN as that takes a bit more to configure. But make sure the appropriate ports are opened on your network and the OpenVPN Synology application.
Also make sure that the permission is granted for the user account you’re trying to use the vpn for.

6

worked for me. thanks

7

Thanks so much for the reply! Might try something similar with running OpenVPN or AdGuard Home on my Raspberry Pi instead. Appreciate the advice!

8

I never really troubleshoot why it wasn’t running on the NAS once I got it running on the router, but pretty much I installed the vpn app on router and opened the port for OpenVPN during setup 1194, then I inputted the necessary info for OpenVPN, then export config and edited it with my info and transferred it to my phone client app.
Not sure if maybe you missed something along the way?