Inter-device communication establishment method, system and device, equipment and medium

Abstract

The embodiment of the invention discloses an inter-device communication establishment method, system and device, equipment and a medium. The inter-device communication establishment method comprises the following steps: constructing a plurality of detection data packets according to a communication key agreed with an intranet device in a second intranet, and sending the detection data packets to the second intranet through an exit device in a first intranet; when a response data packet fed back by the intranet equipment in the second intranet for the target detection data packet is received, determining a public network port of the intranet equipment in the second intranet according to the response data packet; and according to the public network address of the second intranet and the public network port of the intranet equipment in the second intranet, sending a confirmation response data packet to the intranet equipment in the second intranet so as to establish communication connection with the intranet equipment in the second intranet. According to the technical scheme provided by the embodiment of the invention, the two parties to establish communication mutually send the detection data packet containing the agreed content, and the communication connection is established between the devices belonging to different intranets, so that the communication cost is reduced while the information security is ensured.

Description

technical field [0001] Embodiments of the present invention relate to computer technology, and in particular to a method, system, device, device and medium for establishing communication between devices. Background technique [0002] In the production and operation process of smart factory enterprises, it is often necessary for the equipment between two smart factories to communicate with each other. According to the characteristics of the Internet at the present stage, when the smart factory accesses the Internet, it will apply for network broadband from the operator, and the operator will assign the Internet public network address to the smart factory enterprise, and multiple devices within the enterprise will be assigned the enterprise intranet address. Intranet addresses cannot be accessed on the Internet, which means that other devices cannot initiate communication with these devices on the intranet. [0003] In the prior art, when it is necessary to communicate betwee...

AI Technical Summary

Problems solved by technology

[0004] On the one hand, the above-mentioned method needs to support the NAT function on the export equipment of the smart enterprise, or needs to purchase additional equipment that supports the VPN function, or needs to deploy a third-party communication node with a public network address, and the cost of establishing communication is generally high

On the other hand, mapping the internal network address of the internal network device to the public network address, and mapping the VPN device to the public network network, both have network security risks, and third-party nodes with public network addresses are also at risk of being maliciously attacked. Data security is not guaranteed

Images