InHand VG710 InVehicle Gateway User Manual
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5.3 VPN Application
The VPN is intended to establish a private network on the public network for encrypted
communication. A VPN gateway enables remote access by encrypting data packets and converting the
destination address of data packets. The VPN can be realized by a server, hardware, or software, or in
other ways. Compared with the traditional DDN private line or frame relay, the VPN provides a more
secure and convenient remote access solution.
Common VPN application scenario: For example, an employee on a business trip accesses the
enterprise's intranet. The employee connects to the enterprise's VPN server and then accesses the
enterprise's intranet through the VPN server. Communication data between the VPN server and the
client is encrypted and can be regarded as being transmitted on a dedicated data network. This ensures
data security.
5.3.1 IPsec
IPsec is a group of open network security protocols developed by IETF. At the IP layer, the data
source authentication, data encryption, data integrity, and anti-replay functions are used to ensure the
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