FIELD: computer equipment.
SUBSTANCE: invention relates to a method of processing TCP protocol packets passing through a cluster of security gateways of a network computing system. Table is created in random access memory of each gateway for storage of three keys and related to each key attributes. Generating in the security gateway the smallest number random key. For the formed key, a serial number is calculated starting from zero, parity signs of the serial number and time of generating the key. Key and related attributes are distributed to all other security gateways. Key and associated attributes are stored in a table in all security gateways. Period of changing the key in the cluster is set. Network packet containing a TCP SYN message for establishing a connection (request) is sent from the client to the server.
EFFECT: high cluster protection against DoS attacks.
1 cl, 1 dwg, 1 tbl
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