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CLI-based Configuration Guide - VPN

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document describes VPN features on the device and provides configuration procedures and configuration examples.
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Setting Up a Secure Tunnel Connection Using IPSec over L2TP Encapsulation

Setting Up a Secure Tunnel Connection Using IPSec over L2TP Encapsulation

Traveling employees need to communicate with staff in the headquarters. Therefore, L2TP is implemented to set up VPDN connections between them and the LNS in the headquarters authenticates access users. When traveling employees need to transmit confidential information to the headquarters, L2TP is not enough to provide protection on packet transmission. In this case, use L2TP together with IPSec to protect data transmission. Run the dial-up software on the traveling employee's PC. Data packets are encapsulated using L2TP and then IPSec on the PC before being forwarded to the headquarters. Configure an IPSec policy on the headquarters gateway to decapsulate the packets. IPSec over L2TP encapsulation protects all packets whose source and destination addresses are addresses of the LAC and LNS.

Figure 1-15  Setting up a secure tunnel connection using IPSec over L2TP encapsulation
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Updated: 2019-08-07

Document ID: EDOC1100033725

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