Billion BiPAC 8500/8501/8520/8521 SHDSL (VPN) Firewall Bridge/ Router
Chapter 4: Configuration
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PPTP Connection - LAN to LAN (BiPAC 8500/ 8501/ 8520 Only)
• Connection Name: A user-define description of the connection.
• Type: Check Dial Out if you want your router to operate as a client (connecting to a
remote VPN server, e.g. your office server), check Dial In if you want it to operate as a
VPN server.
o When configuring your router as a Client, enter the remote Server IP Address (or
Hostname) you wish to connect to.
o When configuring your router as a server, enter the Private IP Address Assigned
to Dial in User address.
• Peer Network IP: Enter the Peer network IP address.
• Netmask: Enter the subnet mask of the peer network based on the Peer Network IP
setting.
• Username: If you are a Dial-Out user (client), enter the username provided by your Host.
If you are a Dial-In user (server), enter your own username.
• Password: If you are a Dial-Out user (client), enter the password provided by your Host.
If you are a Dial-In user (server), enter your own password.
• Authentication Type: Default is Auto if you want the router to determine which
authentication type to use, or else manually specify CHAP (Challenge Handshake
Authentication Protocol) or PAP (Password Authentication Protocol) if you know which
type the server is using (when acting as a client), or specify the authentication type you
want clients to use (when acting as a server). When using PAP, the password is sent
unencrypted, whilst CHAP encrypts the password before sending. This presents
challenges at different periods to ensure that the client has not been replaced by an
intruder.
• Data Encryption: Data sent over the VPN connection can be encrypted by an MPPE
algorithm. Default is Auto, so that this setting is negotiated when establishing a
