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:
Jan. 26, 2016
Filed:
Apr. 04, 2014
Citrix Systems, Inc., Fort Lauderdale, FL (US);
Krishna Khanal, Bangalore, IN;
Saravana Annamalaisami, Bangalore, IN;
Mahesh Mylarappa, Bangalore, IN;
CITRIX SYSTEMS, INC., Fort Lauderdale, FL (US);
Abstract
The present solution is directed to systems and methods for synchronizing a random seed value among a plurality of multi-core nodes in a cluster of nodes for generating a cookie signature. The cookie signature may be used for protection from SYN flood attacks. A cluster of nodes comprises one master node and one or more other nodes. Each node comprises one master core and one or more other cores. A random number is generated at the master core of the master node. The random number is synchronized across every other core. The random number is used to generated a secret key value that is attached in the encoded initial sequence number of a SYN-ACK packet. If the responding ACK packet does not contain the secret key value, then the ACK packet is dropped.