Method for preventing MAC address cheat

A technology of MAC address and forwarding table items, applied in the field of data communication, can solve the problems of complex configuration, MAC address site does not notify CPU processing, etc., to achieve the effect of solving complex configuration
CN100438439CInactive Publication Date: 2008-11-26HUAWEI TECH CO LTD
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2008-11-26
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The disclosed method for preventing the cheat of MAC address comprises: CPU system sets the dynamic MAC address transmission list item on up port as static state, and simulates the aging mechanism of chip MAC address for former up port list item to prevent cheating MAC address. This invention can record user port suffered malevolent attack and the attack time to notify user through CPU system man-machine interface and network management system in time.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of data communication, in particular to a method for preventing MAC address spoofing. Background technique

[0002] The IEEE802.3 standard stipulates that in a standard Ethernet MAC frame, there are destination MAC address and source MAC address, and the length is 6 bytes. figure 1 It is a standard Ethernet MAC frame format, where:

[0003] Destination Address: destination MAC address, 6Bytes

[0004] Source Address: source MAC address, 6Bytes

[0005] Length / type: data length or message type, 2Bytes

[0006] DATA: the data field carried by the Ethernet frame

[0007] FCS: Frame Check Sequence

[0008] The destination MAC address is used to identify which physical device the Ethernet frame is sent to, and the source MAC address is used to identify which physical device the Ethernet frame is sent from. The first bit of the destination MAC address (the lowest bit of the first byte) indicates whether the destinatio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More