Shenzhen Hongdian Technologies H8922, Руководство пользователя

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H8922 3G/4G Router User Manual
6.4 VPN
Scene introduction
VPN is a virtual private network, which is a secure local area network based on the Internet. Currently, the
H8922 4G Router supports L2TP/PPTP/GRE/IPIP/IPSec/OpenVPN six protocol VPNs.
L2TP is an abbreviation of Layer 2 channel protocol. It is a kind of VPDN (Virtual Private Dial-Up Networking)
technology, which is used for channel transmission of Layer 2 data. L2TP provides a means of remote access
control. The typical application scenario is that a company employee dials into the company's local network
access server (NAS) through L2TP to access the company's internal network, obtain an IP address, and access
it. Network resources for the corresponding permissions. The employee's access to the company's network is
as safe and convenient as a corporate LAN.
Here, IPSec is used to establish a communication link between employees and the company to ensure that
employees work as if they are accessing the corporate LAN, as shown in Figure 6-9.
Figure 6-9 Establishing IPSec communication
PC1 establishes an IPSec link with the company's router through the VPN function of H8922 and uses tunnel
mode communication. The LAN address on the H8922 side is 192.168.86.1/24, and the LAN address on the
router side of the company is 192.168.99.1/24. Through the established IPSec connection, the two LANs can
communicate securely.
Parameter configuration
In this scenario, you need to configure the VPN function. For the configuration procedure, see 5.6.4 IPSec Set-
tings. Figure 6-10, Figure 6-111, and Figure 6-12 show the configuration.