DPD method and equipment based on IPsec

A detection method and technology of the detection party, applied in the field of communication, can solve the problems of wasting CPU, losing IP connectivity, etc., and achieve the effect of saving CPU resources

Active Publication Date: 2013-02-27
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to establish an IPsec session between IPsec peers, there needs to be IP connectivity between IPsec peers, but due to routing, peer restart, etc., IPsec peers may lose IP connect...

Method used

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  • DPD method and equipment based on IPsec
  • DPD method and equipment based on IPsec
  • DPD method and equipment based on IPsec

Examples

Experimental program
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Embodiment Construction

[0040] The embodiment of the present invention proposes an IPsec-based DPD detection method, which is applied to an IPsec network including a detecting device and a detected device, and the detecting device may be an IPsec initiator or an IPsec responder in an IPsec peer , the corresponding detected device is the IPsec responder or IPsec initiator in the IPsec peer; with figure 2 It is a schematic diagram of the application scenario of the embodiment of the present invention. The egress address from Device A to the IP network is 1.1.1.1, and IPsec is deployed on the interface, and the egress address from Device B to the IP network is 2.2.2.2, and IPsec is deployed on the interface. Therefore, Device A and Device B are IPsec peers, and it is assumed that Device A is the detecting device and Device B is the detected device.

[0041] exist figure 2 In the application scenario shown, there is host HOST1 in the private network protected by Device A, and host HOST2 in the private...

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PUM

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Abstract

The invention discloses a DPD (Dead Peer Detection) method and equipment based on IPsec (Internet Protocol Security). The method comprises the steps that detecting equipment selects a finally negotiated IKESA (Internet Key Exchange Security Association) from a plurality of IKESAs when the IKESAs corresponding to detected equipment exist on the detecting equipment, conducts encryption processing on a DPD request message by the selected IKESA, and sends the DPD request message to the detected equipment; if the detecting equipment receives a DPD response message, the detecting equipment conducts decryption processing on the DPD response message; if the decryption is successful, the detected equipment exists; and if the decryption is unsuccessful or no DPD response message is received, the detected equipment does not exist. With the adoption of the method and the equipment, CPU (Central Processing Unit) resources can be saved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an IPsec (IP Security, IP security)-based DPD (Dead Peer Detection, dead peer detection) detection method and device. Background technique [0002] IPsec is a layer-3 tunnel encryption protocol and a security technology for implementing a layer-3 VPN (Virtual Private Network, virtual private network). IPsec provides secure communication between two endpoints. The two endpoints are called IPsec peers, respectively. It is the IPsec initiator and the IPsec responder; further, IPsec is used to provide the following security services at the IP layer: (1) Data confidentiality: the IPsec sender encrypts the message before transmitting the message through the network; (2) the data Integrity: The IPsec responder authenticates the received message to ensure that the message has not been tampered with during transmission; (3) Data source authentication: the IPsec responder ca...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L29/06
Inventor 杨超
Owner NEW H3C TECH CO LTD
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