SDN controller-side system and secure communication method based on intrusion tolerance
An intrusion tolerance and controller technology, applied in the field of secure communication, can solve problems such as unpredictable security attack methods and difficulty in ensuring the security of SDN controllers, and achieve good scalability.
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[0020] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described below through specific embodiments and accompanying drawings.
[0021] figure 1 It is an architecture diagram of the SDN controller end system based on intrusion tolerance of the present invention. Such as figure 1 As shown, the pre-agent group is located before the SDN controller group, receives the Openflow message (request message) from the switch before the controller, and then copies and forwards it to the SDN controller group; receives the message from the SDN controller before the switch The Openflow message (response message), analyze and compare the flow rules in it, and forward the Openflow message containing the intrusion tolerance policy to the switch. figure 2 Schematic diagram of processing Openflow messages for front-end agents.
[0022] The intrusion tolerance in the above scheme depends...
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