@Sunshine Hi Sunshine, Thanks for your reply. I have a dynamic public IP. I'm using Synology DDNS for the VPN profile. Also tested with the actual public IP address. Still no luck.

Hi, got a X20-DSL recently, but Australia only sells the V1 and doesn't come with build in VPN option. I have a Synology NAS connected to the X20 via cable and have Open VPN configured on the NAS....