NAS External Access through openVPN

nosfaay

New Around Here
Hello,

I've just bought a RT-AC86U router, and I can't acces to my NAS (Synology DS418play) from external after enabling OpenVPN client.

My port redirection are OK I think because without openVPN or if I use a VPN Redirect rule, I can connect.

On my NAS, DDNS get the right IP. (it changes when vpn is connected)

I've tried disable NAS firewall too.

I'm a bit beginner with these configuration, any help is welcome :)
 

ColinTaylor

Part of the Furniture
Are you talking about an OpenVPN client running on the router or the NAS?

If it's the router then you said it actually works "without openVPN or if I use a VPN Redirect rule". Obviously if you're routing all the NAS traffic through the VPN client it won't work as you would need your VPN provider to be forwarding ports for you.
 

WRobertE

Regular Contributor
Hello,

I've just bought a RT-AC86U router, and I can't acces to my NAS (Synology DS418play) from external after enabling OpenVPN client.

My port redirection are OK I think because without openVPN or if I use a VPN Redirect rule, I can connect.

On my NAS, DDNS get the right IP. (it changes when vpn is connected)

I've tried disable NAS firewall too.

I'm a bit beginner with these configuration, any help is welcome :)
I'm doing exactly what you're trying to do.

Check this setting on your OpenVPN server on the router:

1637944584507.png
 

nosfaay

New Around Here
I'm running openVPN client on my router to get privacy for all my local devices. I don't use OpenVPN Server.

Before I get this router, I was using OpenVPN client only on my NAS, and I still could access it externaly with ddns.
 

eibgrad

Part of the Furniture

IOW, as you described the problem in your original post, everything is working exactly as expected.
 

ColinTaylor

Part of the Furniture
Before I get this router, I was using OpenVPN client only on my NAS, and I still could access it externaly with ddns.
That's because your NAS was using split tunnelling. Running the VPN client on the router means that's no longer the case. So you either need to exclude the NAS's traffic from the VPN or use a script to selectively route specific ports.
 

nosfaay

New Around Here
Ok thanks, so if I understand well, I can get what I want by adding a VPN director to wan for my NAS, then use openvpn client on it with split tunneling, am I right ?
 

ColinTaylor

Part of the Furniture
Ok thanks, so if I understand well, I can get what I want by adding a VPN director to wan for my NAS, then use openvpn client on it with split tunneling, am I right ?
So on the router you exclude the NAS from going its VPN client, while on the NAS you go back to what you had before with a VPN client running there. That sounds like it should work.
 

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