If you are having trouble establishing a VPN tunnel to the vigor router using the Smart VPN client, here are some common causes as well as general advice for VPN configuration.
Found here https://www.draytek.co.uk/support/downloads/software
The Smart VPN client is updated regularly. These updates includes improvements to make the application more user friendly, other updates includes improvements in functionality of the Smart VPN client. To find out if your software is up to date check the version you are running against the current version on our downloads page.
The ports for VPN Service are not opened on the VPN server.
On a NAT device such as a DrayTek routers, we need to open the ports which VPN service requires for VPN tunnel to be established. For DrayTek Routers, enable the VPN service via [VPN and Remote Access] > [Remote Access Control Setup] page will open the required ports automatically. And please also make sure that the required ports are not redirected or opened for the LAN clients. Only enable the specific VPN service which is required.
If the VPN is connecting but you cannot access the router or any resources (servers, email, etc.) behind it, check that the VPN client's LAN IP subnet does not match the subnet on the router as this would cause an IP conflict. If you are connecting to the resource using a host name (e.g. server.example.com), please try using the resource’s IP address instead. If the connection works when using the IP address, but not when using a host name, please make sure that your computer's DNS server is able to resolve this host name to an IP address.
Check that the IP address you are connecting to is the VPN server's IP address. On the Draytek router's you can check the router's WAN IP address on the [Online Status] > [Physical Connection] page.
If you have followed all these steps are you still cannot get the VPN connection working raise a support query and our engineers will assist.
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