Pptp And L2Tp Vpns; Pptp Vpn Configuration - D-Link DFL-500 User Manual

PPTP and L2TP VPNs

Using DFL-500 PPTP and L2TP Virtual Private Networking (VPN), you can create a secure connection
between a client computer running Windows and an internal network protected by a DFL-500.
PPTP is a Microsoft Windows VPN standard. You can use PPTP to connect computers running Microsoft
Windows to a DFL-500-protected private network without using third party VPN client software.
L2TP combines Windows PPTP functionality with IPSec security. L2TP is supported by most recent versions
of MS-Windows.
The secure VPN tunnel makes it appear to the user that the client computer is directly connected to the
internal network. The VPN protects data passing through the tunnel by encrypting it to guarantee
confidentiality. In addition, authentication guarantees that the data originated from the claimed sender and
was not damaged or altered in transit.
PPTP and L2TP VPNs are only supported in NAT mode.
This chapter describes:
•

PPTP VPN configuration

•
PPTP VPN pass through
•
L2TP VPN configuration
•
RADIUS authentication for PPTP and L2TP VPNs
PPTP VPN configuration
This section describes how to configure the DFL-500 as a PPTP VPN server. This section also describes how
to configure Windows 98, Windows 2000, and Windows XP clients to connect to the PPTP VPN.
You configure the DFL-500 to support PPTP by adding PPTP users and specifying a PPTP address range.
You can also require PPTP VPN users to authenticate to your RADIUS server. Finally, to connect to the
PPTP VPN your remote Windows clients must be configured for PPTP.
DFL-500 User's Manual
56