Intranet remote access method and device, and intranet gateway

Abstract

The invention discloses an intranet remote access method and device thereof, which are applied to an intranet gateway. The method comprises the following steps: establishing a connection with an external network server; receiving an access instruction sent by the external network server through a connection; mapping an intranet node corresponding to a node identifier carried in the access instruction to own corresponding port; sending the port number of the port to the external network server; and carrying out a corresponding access operation on the intranet node mapped at the port directly via the external network server through the port corresponding to the port number. According to the intranet remote access method and device thereof in the invention, the intranet node is mapped to theport of the intranet gateway so that the external network server can access the intranet node mapped at the port directly, thereby simplifying the access process of the external network to the intranet. The invention further discloses an intranet gateway based on the above method.

Description

technical field [0001] The invention relates to the technical field of gateway communication, in particular to an intranet remote access method and a device thereof. The invention also relates to an intranet gateway. Background technique [0002] In the field of industrial control, the current general solution is to collect the data of industrial equipment in the factory through the field bus and store it in the industrial host, so that the manager can view the data through the local area network. In this case, the data of industrial equipment exists in the intranet and cannot be obtained through external network equipment. [0003] However, the industrial gateways currently on the market cannot assist external network devices to realize remote access control to internal network nodes (that is, on-site industrial devices). In this case, the internal network nodes can directly access the external network, but the external network devices cannot directly access the internal ...

AI Technical Summary

Problems solved by technology

In this case, the data of industrial equipment exists in the intranet and cannot be obtained through external network equipment

[0003] However, the industrial gateways currently on the market cannot assist external network devices to realize remote access control to internal network nodes (that is, on-site industrial devices)

In this case, the internal network nodes can directly access the external network, but the external network devices cannot directly access the internal network nodes. The node sends out a request, and the intranet node then replies through the gateway. The access process is complicated and the access method is not convenient enough

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