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An address conversion method, device, equipment and storage medium

A conversion method and address technology, applied in the field of communication, can solve the problems of limited address, inflexibility, extra consumption of device memory and computing resources, etc.

Active Publication Date: 2022-07-12
BEIJING TOPSEC NETWORK SECURITY TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage of this method is that the NAT gateway needs to constantly maintain the mapping relationship table, which consumes additional device memory and computing resources
At the same time, due to the upper limit of the capacity of the mapping relationship table, the addresses recorded in it are limited and inflexible

Method used

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  • An address conversion method, device, equipment and storage medium
  • An address conversion method, device, equipment and storage medium
  • An address conversion method, device, equipment and storage medium

Examples

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Embodiment Construction

[0051] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0052] see figure 1 , an address conversion method is provided in this embodiment of the application, and the address conversion method can be performed by a network security device such as a NAT gateway or a data protection gateway, and the address conversion method can include:

[0053] Step S100: Acquire a data packet sent by the network device in the first network to the second network, and acquire the source IP address of the network device carried in the data packet.

[0054] Step S200: Determine the global address corresponding to the source IP address in the preset address pool by calculating the source IP address; wherein, for the same source IP address, the calculation method is the same.

[0055] Step S300: Convert the source IP address in the data packet into a global addre...

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Abstract

The present application provides an address conversion method, apparatus, device and storage medium. The method includes: acquiring a data message sent by a network device in the first network to a second network, and acquiring a source IP address of the network device carried in the data message; and determining a preset address pool by calculating the source IP address The global address corresponding to the source IP address in the The message is sent to the second network. For the same source IP address, because the network security device calculates the same way every time, the global address determined each time is the same, and there is no need to establish a mapping table, so that the same source IP address can be flexibly calculated every time. into the same global address. It is also because there is no need for a mapping relationship table, so there is no need to consume additional device memory and computing resources for table item maintenance.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to an address conversion method, apparatus, device, and storage medium. Background technique [0002] Dynamic NAT (Network Address Translation) refers to the dynamic establishment of the source IP address and NAT without establishing a one-to-one fixed correspondence between the internal source IP (Internet Protocol, Internet Protocol) address and the external global address. Correspondence between global addresses in the address pool. For example, when a host in the first network needs to access the second network through dynamic NAT, the NAT gateway will randomly select a currently unused global address in the NAT address pool to translate the source IP address of the host. Since the selection of the global address is random, the global address after each translation of the same source IP address may be different. [0003] In some scenarios, for example, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L61/2503
CPCH04L61/2503
Inventor 范鸿雷赵文东李沛盈
Owner BEIJING TOPSEC NETWORK SECURITY TECH
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