A file exchange method and system based on a gatekeeper

Abstract

The invention belongs to the field of data exchange, and discloses a file exchange method and system based on a gatekeeper, and the method comprises the steps: deploying exchange nodes at two sides ofthe gatekeeper, and achieving the file exchange between an internal network and an external network through the regular scanning of a specified directory and the sending and receiving of files at thetwo sides of the gatekeeper. According to the invention, through connection with a sending node and a receiving node, TCP cross-gatekeeper data transmission is realized; data exchange based on TCP enables that file exchange on the two sides of an internal network and an external network cannot feel existence of the gatekeeper, data exchange is achieved transparently, and integrity and timing sequence in the file transmission process are guaranteed; the application system does not need to consider the existence of the gatekeeper, data can be transmitted through the TCP only by making a way with the sending node and the receiving node, and a possibility is provided for external services of the application system.

Description

technical field [0001] The invention belongs to data exchange, in particular to a method and system for file exchange based on a netgate. Background technique [0002] The demand for gatekeeper technology comes from the requirements for data intercommunication between the internal network and the external network. For example, the government's e-government service is for the public and is connected to the Internet. However, due to the requirement of confidentiality, the internal network of the government office network cannot be connected to the external network. , facing various threats from the public network. The suggestion given by security experts is: due to the current security technology, no firewall, UTM and other protection systems can guarantee certain blocking of attacks, and monitoring systems such as intrusion detection cannot guarantee the complete capture of intrusion behaviors, so the safest way is to physically Therefore, in the technical requirements of th...

AI Technical Summary

Problems solved by technology

[0005] The network gatekeeper and the application system cannot communicate through TCP, and can only log data into files. It will be very inconvenient for the application system to directly deal with the network gatekeeper

[0006] However, if the intranet office system needs to provide statistical data and other services to the external network, due to the lack of support of the protocol, the service is isolated and it is difficult to obtain data

Moreover, in the prior art, there is no connection with the sending node and the receiving node to realize the data transmission of the TCP protocol across the gatekeeper

Images