Billion BiPAC 8700VAX(L)-1600 User Manual page 268

Example: Configuring L2TP LAN-to-LAN VPN Connection
The branch office establishes a L2TP VPN tunnel with head office to connect two private networks
over the Internet. The routers are installed in the head office and branch office accordingly.
Both office LAN networks must be in different subnets with the LAN-LAN application.
Note:
Server side: Head Office
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