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Virtual Private Network – L2TP
11.1 Demands
1.
One employee in our company may sometimes want to connect back to our coporate network to work on something. His
PC is PC1_1 in LAN1 instead of DMZ1 so he cannot directly access the host by simply with virtual server settings. This
causes inconvenience for the employee to work remotely.
2.
In our branch office, we need to provide L2TP connection methods to connect back to headquater for the internal company
employees.
11.2 Objectives
1.
With L2TP tunneling, emulate the mobile employee as a member in LAN1 after he dials in the corporate network. Then he
can access all computers in LAN_1 just as if he stays in the office covered by LAN1.
2.
Make sure every employee in the branch office can use the network resource in the headquater. Suppose they are in the
same internal network, and keep the communication security.
11.3 Methods
1.
Setup the L2TP server at DFL-1 (LNS: L2TP Network Server). After dialing up to DFL-1, DFL-1 will assign a private IP
which falls in the range of the settings in the L2TP server at DFL-1. Suppose the range is defined as 192.168.40.200 ~
192.168.40.253, the remote host may get an IP of 192.168.40.200 and logically become a member in LAN1.
Virtual Private Network – L2TP
This chapter introduces L2TP and explains how to implement it.
Figure 11-1 L2TP method connection
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DFL-900 User Manual
Chapter 11
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