International Business Machines Corporation

Timothy R Seeger

Daniel Paul Kolz

David Alan Christenson

Patrick Joseph Callaghan

Christopher Thomas Gloe

Pu Liu

James Richard Coon

Timothy V Bolan

Kyong Jin Shim

Scott Douglas McCreadie

A set of root keys is loaded as a first part of a secure boot process of a secure system. a first trusted key from a set of trusted keys is verified using a first root key from the set of root keys as a second part of the secure boot process. The set of trusted keys is loaded when an affirmative verification for a subset of trusted keys is received. The subset of trusted keys includes the first trusted key. As a third part of the secure boot process, an immutable portion of a file is validated using the first trusted key. As a fourth part of the secure boot process, the file is loaded when each portion of the file is successfully validated. The first, second, third, and fourth parts of the secure boot process occur before an integrity management configuration takes over the secure boot process.

Securing and changing immutable data in secure bootup

Methods, apparatus, and computer program products for variable dynamic throttling of network traffic for intrusion prevention are disclosed that include initializing, as throttling parameters, a predefined time interval, a packet count, a packet count threshold, a throttle rate, a keepers count, and a discards count; starting a timer, the timer remaining on no longer than the predefined time interval; maintaining, while the timer is on, statistics including the packet count, the keepers count, and the discards count; for each data communications packet received by the network host, determining, in dependence upon the statistics and the throttle rate, whether to discard the packet and determining whether the packet count exceeds the packet count threshold; and if the packet count exceeds the packet count threshold: resetting the statistics, incrementing the throttle rate, and restarting the timer.

Variable dynamic throttling of network traffic for intrusion prevention

Growing community of inventors

Rochester, MN, United States of America

Timothy R Seeger