ANSWERED Successful OpenVPN connection on Synology, but no traffic

[Whitener69 0]

Hi,

 

I exactly followed all steps for creating a VPN on Synology. I have established a successful VPN connection - which is visible on in my AirVPN client area > overview page. The thing is that I cannot access the internet (Download Manager) - even ping (using putty) is not responding after having made the VPN connection.

Btw - I deliberatly did not (yet) make any portforwarding changes, as I wanted to see if something as simple as this would work.

Because I thought it might be a firewall issue, I temporary disabled my router firewall - no luck.

 

Hope you could get me in the right direction...

 

Netstat before and after making VPN connection.

 

DiskStation> netstat -nr

Kernel IP routing table

Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface

0.0.0.0         192.168.0.1     0.0.0.0         UG        0 0          0 eth0

192.168.0.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0

DiskStation> netstat -nr

Kernel IP routing table

Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface

0.0.0.0         10.8.0.1        128.0.0.0       UG        0 0          0 tun0

0.0.0.0         192.168.0.1     0.0.0.0         UG        0 0          0 eth0

10.8.0.0        0.0.0.0         255.255.0.0     U         0 0          0 tun0

128.0.0.0       10.8.0.1        128.0.0.0       UG        0 0          0 tun0

192.168.0.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0

213.152.161.73  192.168.0.1     255.255.255.255 UGH       0 0          0 eth0

213.152.161.73  192.168.0.1     255.255.255.255 UGH       0 0          0 eth0

 

 

[Whitener69 0]

SOLVED

 

I later found out that a direct ping to an IP-address did work, therefore it had to be the DNS that was misconfigured.

What did work is: putting the DNS Server of AirVPN as the Alternative DNS Server of Synology diskstation.

 

Hereby the steps:

- Alternative DNS Server: you can find it in Control Panel > Network > General

- DNS of yourVPN provider (in our case AirVPN): 1) in Windows, start cmd 2) ipconfig /all 3) Look for the DNS Server under the TAP-Windows Adapter properties.

 

Good luck!

Marc

[jneveragain 0]

This post has not gotten enough love! I'm sure there are plenty of people searching out this exact fix for their Synology NAS systems!!!

 

Thank you, Marc! YOU THE MAN