D-Link DVX-2002F, User Manual, Page: 93 / 130

DVX IPPBX
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radio button of L2TP to configure L2TP VPN server.

Enable : Tick the checkbox to enable L2TP VPN server.

Remote Start IP , Remote End IP : L2TP VPN remote network IP range, between start IP and
end IP there must be less than 10 available IP addresses.
 Local IP : L2TP VPN local server IP address.

Primary DNS : Primary DNS for VPN connection.

Alternate DNS : Alternative DNS for VPN connection.

Authentication Method : Select the authentication method: chap or pap.
pap : Password Authenticate Protocol,PAP works like a standard login procedure; it uses
static user name and password to authenticate the remote system.
chap : Challenge Handshake Authentication Protocol
CHAP takes a more sophisticated and secure approach to authentication by creating a
unique challenge phrase (a randomly generated string) for each authentication.

Debug : Tick to enable debug for L2TP VPN connection, debug info will be written into system
logs.

IPSec : Enable IPSecencryption for L2TP VPN server.

IPSec Local IP : DVX WAN IP which can access Internet.
 IPSec Password : Define a password for IPSec VPN client to authenticate.
Notice :
If the DVX IPPBX system is behind NAT, you need to open ports 500, 4500 and 1701 on the router/firewall.
For the VPN client to connect you’ll need to create a VPN user account.
Click “
VPN User Management ” tab and click “ New VPN User ” button to add a VPN user account.