Attack defense method and device

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United States of America Patent

PATENT NO 9628441
SERIAL NO

14738159

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Abstract

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An attack defense method and device, which relate to the communications field and effectively defend against a Secure Socket Layer (SSL) denial of service (DoS) attack behavior. The method includes after a Transmission Control Protocol (TCP) connection to a client is established, the attack defense device receives a key negotiation request message sent by the client; when a session monitoring table of the client exists, the attack defense device determines whether a session identity exists in the session monitoring table of the client; when the session identity does not exist, the attack defense device records the session identity into the session monitoring table, and determines whether a quantity of session identities of the client is greater than a first preset value; and when the quantity of session identities of the client is greater than the first preset value, disconnects the TCP connection.

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Patent Owner(s)

  • HUAWEI TECHNOLOGIES CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sun, Hong Beijing, CN 90 947

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