US Patent 11916894 Protecting against network vulnerabilities

A method including pre-authenticating, by an infrastructure device, a user device for obtaining communication services from a server, the pre-authenticating including determining a given duration of time and a communication parameter associated with a pre-authentication request received from the user device; and operating, by the infrastructure device, a port associated with the server in an activated mode for the given duration of time to enable the user device to transmit an authentication request indicating the communication parameter prior to an expiration of the given duration of time. Various other aspects are contemplated.