Virtual private network communication system, connection method and data packet transmission method

Abstract

The invention discloses a virtual private network communication system. The virtual private network communication system comprises a plurality of client apparatuses and a server apparatus which establishes VPN connection with the client apparatuses through a virtual private network by using a preset protocol, wherein each of the client apparatuses comprises an authentication request unit, a first storage unit, a virtual network interface card and an encryption unit; the authentication request units are used for sending authentication information to the server apparatus to authenticate; the first storage units are used for storing the MAC address linked list of opposite-end client and the IP address of the server apparatus; the virtual network interface cards are provided with virtual IP addresses belonging to the virtual private network; the encryption units correspond to the virtual network interface cards and are used for encrypting the data packets which need to be sent from the virtual network interface cards. The invention also discloses a virtual private network connection method and a data packet transmission method. According to the virtual private network communication system, the virtual private network connection method and the data packet transmission method, an N2N structure is used for realizing the VPN network so as to ensure that the privacies of both sides of the communication are not revealed, the structure is concise and clear and simplicity and simplification are realized.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to a virtual private network communication system, a connection method and a data packet transmission method. Background technique [0002] At present, the Session Initiation Protocol (SIP) has been able to realize point-to-point or multi-point multimedia communication in the IP network, and SIP protocol stacks based on open source projects emerge in endlessly, such as VOCAL, osip, mjsip, etc., which have been developed A variety of SIP terminals have been produced, such as X-Lite, sipXphone, Linphone, sipDroid, etc., and the Android operating system has become one of the most popular smart mobile device platforms in the world. The combination of SIP protocol and Android will be a pioneer in the field of audio and video communication. One of the trends, and the need for information confidentiality in the network communication process is necessary. Implementing VPN in the c...

AI Technical Summary

Problems solved by technology

However, the functions and implementation of OpenVpn are complex and involve many network protocols, which are difficult for developers to understand and costly to maintain

For mobile phone platforms with limited hardware resources, it consumes a lot of resources and reduces performance

The information exchange of ordinary users in daily life does not require too complicated encryption processing, OpenVpn will affect the processing speed and user experience

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