METHOD OF FILTERING SECURE NETWORK CONNECTIONS IN A DIGITAL DATA NETWORK Russian patent published in 2019 - IPC H04L12/70 H04L29/02 G06F12/14 

FIELD: information technology.

SUBSTANCE: invention relates to filtering of secure network connections. This method defines application layer network protocol (F) that is prohibited for use, and also provides protocol (F) interaction; establishing connections according to protocols E; transport layer protocol (T); determining whether protocol (E) is used in a network connection; establishing connection of transport level T1 with computer with address R; receiving from a client C for a recipient with an address R of a packet P, which is sent over the established connection T1 and contains data D; determining presence of a security connection E1 request in the data D; if fact of availability of request is not installed, packet P is skipped; if availability of request is established, then transport connection T2 with destination address R is established; requesting through T2 installation of protected connection E2; if connection E2 could not be established, packet P is passed; if E2 connection is established, protocol (F) interaction with computer is performed at address R; if interaction by protocol (F) is successful, packet P is blocked.

EFFECT: broader control of network connections and high security of the monitored data network.

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