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A message forwarding method and device

A message forwarding and message technology, applied in the network field, can solve problems such as potential security risks

Active Publication Date: 2022-04-22
NEW H3C SECURITY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the packet needs to be decrypted into plain text by the NAT device first, and then encrypted and forwarded to the IPv4 network device through the IPSec tunnel between the NAT device and the IPv4 network device, there is a security risk

Method used

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  • A message forwarding method and device
  • A message forwarding method and device

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055] In order to improve the security in the message forwarding process, the embodiment of the present invention provides a message forwarding method, device, IPv6 network equipment, IPv4 network equipment and machine-readable storage medium. In the following, the message forwarding method provided by the embodiment of the present invention is firstly introduced.

[0056] figure 1 An application scenario of the message forwarding method provided by the embo...

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Abstract

The embodiment of the present invention provides a message forwarding method and device. The pre-configured IPSec protocol type is IPv4. Before forwarding a message to a NAT device, an IPv6 network device can generate an IPv4 address correspondingly according to the first IPv6 source address and destination address. source address and destination address, and convert the first IPv6 message into the first IPv4 message according to the IPv4 source address and destination address, and then encrypt the first IPv4 message according to the found first IPSec SA, and The header of the encrypted first IPv4 message encapsulates the first IPv6 source address and destination address, so that after receiving the encapsulated message, the NAT device directly performs NAT conversion on the first IPv6 source address and destination address of the message header That is, without decrypting the encrypted first IPv4 message, the encrypted first IPv4 message can be forwarded to the peer IPv4 network device based on the IPv4 source address and destination address converted by NAT. During the message forwarding process The plaintext will not be decrypted, which improves the security of the message during forwarding.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a message forwarding method and device. Background technique [0002] With the rapid expansion of network scale, IPv4 (Internet Protocol version 4, Internet Protocol version 4) has been unable to meet the needs of network development due to factors such as small address space and low security. IPv6 (Internet Protocol version 6, Internet Protocol version 6), as an upgraded version of IPv4, provides a huge address space and greatly enriches address resources. However, given that IPv4 is a fairly mature technology with wide application, and IPv6 technology and related equipment are incomplete, it is impossible for IPv6 networks to completely replace IPv4 networks immediately. Therefore, for a long time, there will be coexistence of IPv4 networks and IPv6 networks. Case. [0003] NAT (Network Address Translation, Network Address Translation) technology can convert the source addre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L69/18H04L9/40H04L47/70H04L61/256H04L69/22
CPCH04L69/18H04L63/101H04L63/0428H04L47/825H04L61/256H04L69/22
Inventor 岳炳词
Owner NEW H3C SECURITY TECH CO LTD
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