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Pattern matching domain division and recognition method for photon firewall

A technology of pattern matching and identification methods, applied in the field of optical network security of optical fiber communication systems, can solve the problems of pattern matching domain division and identification of continuous optical signals, and achieve the improvement of efficiency and flexibility, simple and effective implementation, and rapid and accurate detection. Effect

Active Publication Date: 2017-10-10
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no method for the division and identification of pattern matching domains for continuous optical signals, which is one of the first problems in the realization of intrusion detection for continuous optical signals in photonic firewalls

Method used

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  • Pattern matching domain division and recognition method for photon firewall
  • Pattern matching domain division and recognition method for photon firewall
  • Pattern matching domain division and recognition method for photon firewall

Examples

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Embodiment Construction

[0037] In the embodiment of the method for dividing and identifying the pattern matching domain used in the photon firewall, the front end of each optical node in the optical network is configured with a photon firewall, such as figure 1 As shown, intrusion detection and security protection are performed on the optical signals at all input terminals. Various services are loaded on the continuous optical signal at the optical sending end, and the optical signal is transmitted to the receiving end through the optical fiber link, and the input port of the receiving end is set with a photonic firewall.

[0038] figure 2 Shown is the overall architecture of the photonic firewall at the receiving end in this embodiment, the solid line in the figure indicates optical signal transmission, and the dotted line indicates electrical signal transmission. The photon firewall in this example includes a 1×2 optical switch, an optical splitter, a service optical identification module, a doma...

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Abstract

The invention discloses a pattern matching domain division and recognition method for a photon firewall. A transmitting terminal classifies photosignal business, and inserts business characteristic light between the business during modulation and inserts domain characteristic light between pattern matching domains. The photon firewall of a receiving terminal samples photosignals to obtain a general signal and a sampling signal, and the sampling signal is split into a sampling detection signal and a sampling reduction signal. The general signal and the sampling reduction signal are connected to a 2*1 photoswitch after being delayed. The sampling detection signal is connected to the business characteristic light and a characteristic light recognition module in sequence, the recognized business type and arrival time are transmitted to a safety operation module and a corresponding pattern matching module is activated by the arrival time. The pattern matching domains are fed into the pattern matching module for pattern matching with a local photosignal, the matching result is transmitted to the safety operation module, and the 2*1 photoswitch is controlled to discard the sampling reduction signal or to output the sampling reduction signal after splicing with the general signal through the result. According to the pattern matching domain division and recognition method, the condition that the photon firewall quickly and efficiently detects intrusion and safety protection of continuous photosignals is ensured.

Description

technical field [0001] The invention relates to the field of optical network security of an optical fiber communication system, in particular to a method for dividing and identifying pattern matching domains of a photon firewall, so as to realize intrusion detection and safety protection of the photon firewall. Background technique [0002] As the physical link layer in the entire communication system, the optical network is traditionally considered to have high security due to its transmission medium’s closed insulation, high signal rate and reliability. Therefore, the security of business transmission in the optical network Protection measures are usually implemented only at the electrical layer. Optical networks can carry various types of services, including voice, video, and data. In order to improve the carrying efficiency of the optical network and carry out some operation and maintenance operations, the most original information is usually encapsulated, added with co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04B10/70
CPCH04B10/70H04L63/02H04L63/1416H04L63/20
Inventor 黄善国罗青松李新底楠刘志强岳耀笠郭秉礼覃波赵灏
Owner BEIJING UNIV OF POSTS & TELECOMM
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