The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 2021
Filed:
Jun. 02, 2019
International Business Machines Corporation, Armonk, NY (US);
Clark Debs Jeffries, Durham, NC (US);
Mohammad Peyravian, Cary, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and technique for protecting against denial of service attacks includes maintaining a session count indicating a quantity of active client sessions a server is maintaining and a session threshold specifying a maximum quantity of concurrent client sessions the server can maintain. Responsive to receiving a request from a client, a request count maintained by the server is verified to be less than the session threshold and, if so, a challenge message is sent to the client and the request count is incremented. Responsive to receiving a response message to the challenge message from the client, the response message is verified, a session with the client is established, and the session count is incremented. Responsive to terminating the session with the client, the session count and the request count are decremented.