Billion BiPAC 7404V(G)OX User Manual page 95

PPTP Connection - LAN to LAN
Click Configuration/VPN/PPTP. Choose LAN to LAN from Connect Type drop-down menu.
Name: A given name for the connection (e.g. "connection to office").
Connection Type: Remote Access or LAN to LAN.
Type: Check Dial Out if you want your router to operate as a client (connecting to a remote
VPNserver, e.g. your office server), check Dial In operates as a VPN server.
When configuring your router as a Client, enter the remote Server IP Address (or Domain Name)
you wish to connect to.
When configuring your router as a server, enter the Private IP Address assigned to the Dial in
User.
Peer Network IP: Enter Peer network IP address.
Netmask: Enter the subnet mask of 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 the 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 else the authentication type you want clients connecting to you to use (when acting as a
server). When using PAP, the password is sent unencrypted, whilst CHAP encrypts the password
before sending, and also allows for challenges at different periods to ensure that an intruder has
not replaced the client.
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 connection, or else you can
manually Enable or Disable encryption.
Key Length: The data can be encrypted by MPPE algorithm with 40 bits or 128 bits. Default is
Auto, it is negotiated when establishing a connection. 128 bit keys provide stronger encryption
90