{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9628441","patent":{"patent_number":"US-9628441","title":"Attack defense method and device","assignee":null,"inventors":[],"filing_date":"2015-06-12T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":19,"abstract":"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."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Attack defense method and device","description":"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 af","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9628441","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9628441","citation_suggestion":"Patentable. \"Attack defense method and device\" (US-9628441). https://patentable.app/patents/US-9628441","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9628441","json":"https://patentable.app/api/llm-context/US-9628441","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:37:14.845Z"}