Billion BiPAC 7800(N)X(L) User Manual page 220

Example: Configuring a LAN-to-LAN PPTP VPN Connection
The branch office establishes a PPTP VPN tunnel with head office to connect two private networks
over the Internet. The routers are installed in the head office and branch offices accordingly.
Server side: Head Office
The above is the commonly setting for PPTP Server, set as you like for authentication and
encryption. The settings in Client side should be in accordance with settings in Server side.
Then account the PPTP Account.
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