Server User Manual

4.11 PPTP VPN
The LES1508A, LES1408A, LES1416A, LES1432A, LES1448A, LES1308A, LES1316A, LES1332A, LES1348A,
LES1208A-R2, LES1216A-R2, LES1232 and LES1248A-R2 console servers
include a PPTP (Point-to-Point
Tunneling Protocol) server. PPTP is typically used for communications over a physical or virtual serial
link. The PPP endpoints define a virtual IP address to themselves. Routes to networks can then be
defined with these IP addresses as the gateway, which results in traffic being sent across the tunnel.
PPTP establishes a tunnel between the physical PPP endpoints and securely transports data across the
tunnel.
The strength of PPTP is its ease of configuration and integration into existing Microsoft infrastructure. It is
generally used for connecting single remote Windows clients. If you take your portable computer on a
business trip, you can dial a local number to connect to your Internet access service provider (ISP) and
then create a second connection (tunnel) into your office network across the Internet and have the same
access to your corporate network as if you were connected directly from your office. Similarly,
telecommuters can also set up a VPN tunnel over their cable modem or DSL links to their local ISP.
To set up a PPTP connection:
1. Enable and configure the PPTP VPN server on your console server
2. Set up VPN user accounts on the console server and enable the appropriate authentication
3. Configure the VPN clients at the remote sites. The client does not require special software as the
PPTP Server supports the standard PPTP client software included with Windows XP/ NT/ 2000/ 7
and Vista
4. Connect to the remote VPN
4.11.1 Enable the PPTP VPN server
 Select PPTP VPN on the Serial & Networks menu
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