Suggested Built-in VPN Type
Built-in VPN Type is natively supported by the OS and no Smart VPN Client required.
Alternate VPN Type
For all clients, download Smart VPN Client for alternative VPN Type.
Branch offices dial LAN-to-LAN VPN to the HQ to have secure access to the company resources. If HQ dials a LAN-to-LAN VPN to the cloud server, branches can also access to the cloud server via HQ.
IPsec tunnel with AES-SHA256 security method for highest security and best performance
It works for LAN-to-LAN VPN as well! See more at Single-Arm VPN
Some ISPs assign private IP addresses for a multi-site company, and most 4G providers offer private IP, too.
VPN Server with private IP behind NAT makes branches unable to establish a LAN-to-LAN VPN tunnel.
To overcome the limitations, register all your VPN Vigor Routers to DrayTek VPN Matcher , then VPN Matcher will help exchanging the connection information between VPN Server and branches.
With the connection information, VPN tunnel can be established successfully.