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Attack detection method of spanning tree protocol based on credible switchboard

A technology of spanning tree protocol and attack detection, which is applied in the field of information security to achieve the effect of reducing network traffic burden, reducing workload, and preventing root takeover attacks

Active Publication Date: 2013-06-05
BEIJING UNIV OF TECH
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Existing technical solutions cannot solve all problems, and there are still defects

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  • Attack detection method of spanning tree protocol based on credible switchboard
  • Attack detection method of spanning tree protocol based on credible switchboard
  • Attack detection method of spanning tree protocol based on credible switchboard

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Embodiment Construction

[0032] Attached below figure 1 , 2 , 3 specifically explain the implementation method and steps of the present invention.

[0033] The invention is an attack detection method based on the trusted exchange spanning tree protocol, which is divided into two parts: internal monitoring and external protection. After the switch successfully intervenes in the network, it first starts the state machine, executes the internal monitoring module, and regulates the internal operations of the spanning tree protocol, such as figure 1 . When a BPDU is received, the flood detection of the external protection module of the spanning tree protocol is performed to detect the flood attack behavior from the outside, such as figure 2 . Finally, perform root takeover attack detection, send verification and decide whether to replace the root bridge, such as image 3 .

[0034] First, according to figure 1 The state diagram in the Spanning Tree Protocol monitors the entire running process of th...

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Abstract

The invention discloses an attack detection method of a spanning tree protocol based on a credible switchboard. An interior monitoring module is utilized to conduct monitoring for an attack behavior which is generated by the switchboard, an exterior protection module is utilized to conduct detecting for an attack threat from the exterior of the switchboard, and therefore, full attach detection of the spanning tree protocol is achieved. The method includes that firstly, according to the condition that in different stages, the switchboard waits different bridge protocol data units (BPDU), a state image is drawn, according to a state transfer condition, whole operation behavior of the switchboard is monitored so as to detect an attach behavior generated by the equipment, then the BPDU from the exterior is classified, a timer and a counting method are adopted to detect flooding attack, finally, when received BID is less than the BPDU of a current root BID, an explorer packet is sent to conduct validity checking on a target switchboard, and if the BPDU is a root bridge, whether the root bridge needs changing is decided after self-assessment so as to detect whether a root connection pipe is attached.

Description

Technical field: [0001] The invention relates to an evaluation of an attack detection method based on a trusted exchange spanning tree protocol. It belongs to the field of information security. Background technique: [0002] With the rapid development and continuous expansion of network technology, it is facing severe security challenges. As a Layer 2 forwarding device, the switch is often attacked, such as illegally obtaining the control right of the switch, causing the network to be paralyzed. Spanning tree protocol is a main protocol running on switches, which can change the loop-free physical topology into a loop-free logical topology. The attack against the spanning tree protocol is one of the main threats faced by switches at present. [0003] There are many kinds of spanning tree protocol attacks. At present, more mature protection measures include the BPDU protection and root protection mechanism proposed by Cisco. It uses manual intervention to forcibly prevent p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/26
Inventor 赖英旭潘秋月杨震李健刘静李哲
Owner BEIJING UNIV OF TECH
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