List of Applications Updated in ARL #2575
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Effective Virtual CPU Configuration with QEMU and Libvirt
Effective Virtual CPU Configuration with QEMU and libvirt Kashyap Chamarthy <[email protected]> Open Source Summit Edinburgh, 2018 1 / 38 Timeline of recent CPU flaws, 2018 (a) Jan 03 • Spectre v1: Bounds Check Bypass Jan 03 • Spectre v2: Branch Target Injection Jan 03 • Meltdown: Rogue Data Cache Load May 21 • Spectre-NG: Speculative Store Bypass Jun 21 • TLBleed: Side-channel attack over shared TLBs 2 / 38 Timeline of recent CPU flaws, 2018 (b) Jun 29 • NetSpectre: Side-channel attack over local network Jul 10 • Spectre-NG: Bounds Check Bypass Store Aug 14 • L1TF: "L1 Terminal Fault" ... • ? 3 / 38 Related talks in the ‘References’ section Out of scope: Internals of various side-channel attacks How to exploit Meltdown & Spectre variants Details of performance implications What this talk is not about 4 / 38 Related talks in the ‘References’ section What this talk is not about Out of scope: Internals of various side-channel attacks How to exploit Meltdown & Spectre variants Details of performance implications 4 / 38 What this talk is not about Out of scope: Internals of various side-channel attacks How to exploit Meltdown & Spectre variants Details of performance implications Related talks in the ‘References’ section 4 / 38 OpenStack, et al. libguestfs Virt Driver (guestfish) libvirtd QMP QMP QEMU QEMU VM1 VM2 Custom Disk1 Disk2 Appliance ioctl() KVM-based virtualization components Linux with KVM 5 / 38 OpenStack, et al. libguestfs Virt Driver (guestfish) libvirtd QMP QMP Custom Appliance KVM-based virtualization components QEMU QEMU VM1 VM2 Disk1 Disk2 ioctl() Linux with KVM 5 / 38 OpenStack, et al. libguestfs Virt Driver (guestfish) Custom Appliance KVM-based virtualization components libvirtd QMP QMP QEMU QEMU VM1 VM2 Disk1 Disk2 ioctl() Linux with KVM 5 / 38 libguestfs (guestfish) Custom Appliance KVM-based virtualization components OpenStack, et al. -
Red Hat Enterprise Linux 7 7.1 Release Notes
Red Hat Enterprise Linux 7 7.1 Release Notes Release Notes for Red Hat Enterprise Linux 7 Red Hat Customer Content Services Red Hat Enterprise Linux 7 7.1 Release Notes Release Notes for Red Hat Enterprise Linux 7 Red Hat Customer Content Services Legal Notice Copyright © 2015 Red Hat, Inc. This document is licensed by Red Hat under the Creative Commons Attribution-ShareAlike 3.0 Unported License. If you distribute this document, or a modified version of it, you must provide attribution to Red Hat, Inc. and provide a link to the original. If the document is modified, all Red Hat trademarks must be removed. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, JBoss, MetaMatrix, Fedora, the Infinity Logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. Linux ® is the registered trademark of Linus Torvalds in the United States and other countries. Java ® is a registered trademark of Oracle and/or its affiliates. XFS ® is a trademark of Silicon Graphics International Corp. or its subsidiaries in the United States and/or other countries. MySQL ® is a registered trademark of MySQL AB in the United States, the European Union and other countries. Node.js ® is an official trademark of Joyent. Red Hat Software Collections is not formally related to or endorsed by the official Joyent Node.js open source or commercial project. -
Knot DNS Resolver Release 1.2.0
Knot DNS Resolver Release 1.2.0 CZ.NIC Labs Apr 25, 2017 Contents 1 Building project 3 1.1 Installing from packages.........................................3 1.2 Platform considerations.........................................3 1.3 Requirements...............................................3 1.4 Building from sources..........................................5 1.5 Getting Docker image..........................................7 2 Knot DNS Resolver library 9 2.1 Requirements...............................................9 2.2 For users.................................................9 2.3 For developers..............................................9 2.4 Writing layers.............................................. 11 2.5 APIs in Lua................................................ 12 2.6 API reference............................................... 15 3 Knot DNS Resolver daemon 47 3.1 Enabling DNSSEC............................................ 47 3.2 CLI interface............................................... 48 3.3 Scaling out................................................ 48 3.4 Running supervised........................................... 49 3.5 Configuration............................................... 49 3.6 Using CLI tools............................................. 64 4 Knot DNS Resolver modules 67 4.1 Static hints................................................ 67 4.2 Statistics collector............................................ 69 4.3 Query policies.............................................. 71 4.4 Views and ACLs............................................ -
GNAT User's Guide for Native Platforms
GNAT User's Guide for Native Platforms GNAT User's Guide for Native Platforms , January 13, 2017 AdaCore Copyright c 2008-2017, Free Software Foundation i Table of Contents 1 About This Guide :::::::::::::::::::::::::::::: 2 1.1 What This Guide Contains ::::::::::::::::::::::::::::::::::::: 2 1.2 What You Should Know before Reading This Guide :::::::::::: 2 1.3 Related Information :::::::::::::::::::::::::::::::::::::::::::: 3 1.4 A Note to Readers of Previous Versions of the Manual :::::::::: 3 1.5 Conventions:::::::::::::::::::::::::::::::::::::::::::::::::::: 4 2 Getting Started with GNAT ::::::::::::::::::: 5 2.1 Running GNAT :::::::::::::::::::::::::::::::::::::::::::::::: 5 2.2 Running a Simple Ada Program :::::::::::::::::::::::::::::::: 5 2.3 Running a Program with Multiple Units :::::::::::::::::::::::: 6 2.4 Using the gnatmake Utility ::::::::::::::::::::::::::::::::::::: 7 3 The GNAT Compilation Model ::::::::::::::: 9 3.1 Source Representation:::::::::::::::::::::::::::::::::::::::::: 9 3.2 Foreign Language Representation:::::::::::::::::::::::::::::: 10 3.2.1 Latin-1::::::::::::::::::::::::::::::::::::::::::::::::::: 10 3.2.2 Other 8-Bit Codes:::::::::::::::::::::::::::::::::::::::: 10 3.2.3 Wide Character Encodings ::::::::::::::::::::::::::::::: 11 3.2.4 Wide Wide Character Encodings ::::::::::::::::::::::::: 12 3.3 File Naming Topics and Utilities :::::::::::::::::::::::::::::: 13 3.3.1 File Naming Rules ::::::::::::::::::::::::::::::::::::::: 13 3.3.2 Using Other File Names :::::::::::::::::::::::::::::::::: 14 3.3.3 Alternative -
A Model-Driven Development and Verification Approach
A MODEL-DRIVEN DEVELOPMENT AND VERIFICATION APPROACH FOR MEDICAL DEVICES by Jakub Jedryszek B.S., Wroclaw University of Technology, Poland, 2012 B.A., Wroclaw University of Economics, Poland, 2012 A THESIS submitted in partial fulfillment of the requirements for the degree MASTER OF SCIENCE Department of Computing and Information Sciences College of Engineering KANSAS STATE UNIVERSITY Manhattan, Kansas 2014 Approved by: Major Professor John Hatcliff Abstract Medical devices are safety-critical systems whose failure may put human life in danger. They are becoming more advanced and thus more complex. This leads to bigger and more complicated code-bases that are hard to maintain and verify. Model-driven development provides high-level and abstract description of the system in the form of models that omit details, which are not relevant during the design phase. This allows for certain types of verification and hazard analysis to be performed on the models. These models can then be translated into code. However, errors that do not exist in the models may be introduced during the implementation phase. Automated translation from verified models to code may prevent to some extent. This thesis proposes approach for model-driven development and verification of medi- cal devices. Models are created in AADL (Architecture Analysis & Design Language), a language for software and hardware architecture modeling. AADL models are translated to SPARK Ada, contract-based programming language, which is suitable for software veri- fication. Generated code base is further extended by developers to implement internals of specific devices. Created programs can be verified using SPARK tools. A PCA (Patient Controlled Analgesia) pump medical device is used to illustrate the primary artifacts and process steps. -
Kdump, a Kexec-Based Kernel Crash Dumping Mechanism
Kdump, A Kexec-based Kernel Crash Dumping Mechanism Vivek Goyal Eric W. Biederman Hariprasad Nellitheertha IBM Linux NetworkX IBM [email protected] [email protected] [email protected] Abstract important consideration for the success of a so- lution has been the reliability and ease of use. Kdump is a crash dumping solution that pro- Kdump is a kexec based kernel crash dump- vides a very reliable dump generation and cap- ing mechanism, which is being perceived as turing mechanism [01]. It is simple, easy to a reliable crash dumping solution for Linux R . configure and provides a great deal of flexibility This paper begins with brief description of what in terms of dump device selection, dump saving kexec is and what it can do in general case, and mechanism, and plugging-in filtering mecha- then details how kexec has been modified to nism. boot a new kernel even in a system crash event. The idea of kdump has been around for Kexec enables booting into a new kernel while quite some time now, and initial patches for preserving the memory contents in a crash sce- kdump implementation were posted to the nario, and kdump uses this feature to capture Linux kernel mailing list last year [03]. Since the kernel crash dump. Physical memory lay- then, kdump has undergone significant design out and processor state are encoded in ELF core changes to ensure improved reliability, en- format, and these headers are stored in a re- hanced ease of use and cleaner interfaces. This served section of memory. Upon a crash, new paper starts with an overview of the kdump de- kernel boots up from reserved memory and pro- sign and development history. -
Safeguard for Privileged Passwords 6.0.9 LTS Release Notes
Safeguard for Privileged Passwords 6.0.9 LTS Release Notes 03 March 2021, 06:20 These release notes provide information about the Safeguard for Privileged Passwords 6.0.9 LTS release. If you are updating a Safeguard for Privileged Passwords version prior to this release, read the release notes for the version found at: One Identity Safeguard for Privileged Passwords Technical Documentation. For the most recent documents and product information, see One Identity Safeguard for Privileged Passwords Technical Documentation. Release options Safeguard for Privileged Passwords includes two release versions: l Long Term Support (LTS) release, version 6.0.9 LTS l Feature release, version 6.9 The versions align with Safeguard for Privileged Sessions. For more information, see Long Term Support (LTS) and Feature Releases on page 13. About this release Safeguard for Privileged Passwords Version 6.0.9 LTS is a minor LTS release with resolved issues. For more details on the features and resolved issues, see: Safeguard for Privileged Passwords 6.0.9 LTS 1 Release Notes l Resolved issues NOTE: For a full list of key features in Safeguard for Privileged Passwords, see the Safeguard for Privileged Passwords Administration Guide. About the Safeguard product line The Safeguard for Privileged Passwords Appliance is built specifically for use only with the Safeguard for Privileged Passwords privileged management software, which is pre- installed and ready for immediate use. The appliance is hardened to ensure the system is secured at the hardware, operating system, and software levels. The hardened appliance approach protects the privileged management software from attacks while simplifying deployment and ongoing management and shortening the time frame to value. -
Linux Core Dumps
Linux Core Dumps Kevin Grigorenko [email protected] Many Interactions with Core Dumps systemd-coredump abrtd Process Crashes Ack! 4GB File! Most Interactions with Core Dumps Poof! Process Crashes systemd-coredump Nobody abrtd Looks core kdump not Poof! Kernel configured Crashes So what? ● Crashes are problems! – May be symptoms of security vulnerabilities – May be application bugs ● Data corruption ● Memory leaks – A hard crash kills outstanding work – Without automatic process restarts, crashes lead to service unavailability ● With restarts, a hacker may continue trying. ● We shouldn't be scared of core dumps. – When a dog poops inside the house, we don't just `rm -f $poo` or let it pile up, we try to figure out why or how to avoid it again. What is a core dump? ● It's just a file that contains virtual memory contents, register values, and other meta-data. – User land core dump: Represents state of a particular process (e.g. from crash) – Kernel core dump: Represents state of the kernel (e.g. from panic) and process data ● ELF-formatted file (like a program) User Land User Land Crash core Process 1 Process N Kernel Panic vmcore What is Virtual Memory? ● Virtual Memory is an abstraction over physical memory (RAM/swap) – Simplifies programming – User land: process isolation – Kernel/processor translate virtual address references to physical memory locations 64-bit Process Virtual 8GB RAM Address Space (16EB) (Example) 0 0 16 8 EB GB How much virtual memory is used? ● Use `ps` or similar tools to query user process virtual memory usage (in KB): – $ ps -o pid,vsz,rss -p 14062 PID VSZ RSS 14062 44648 42508 Process 1 Virtual 8GB RAM Memory Usage (VSZ) (Example) 0 0 Resident Page 1 Resident Page 2 16 8 EB GB Process 2 How much virtual memory is used? ● Virtual memory is broken up into virtual memory areas (VMAs), the sum of which equal VSZ and may be printed with: – $ cat /proc/${PID}/smaps 00400000-0040b000 r-xp 00000000 fd:02 22151273 /bin/cat Size: 44 kB Rss: 20 kB Pss: 12 kB.. -
SUSE Linux Enterprise Server 15 SP2 Autoyast Guide Autoyast Guide SUSE Linux Enterprise Server 15 SP2
SUSE Linux Enterprise Server 15 SP2 AutoYaST Guide AutoYaST Guide SUSE Linux Enterprise Server 15 SP2 AutoYaST is a system for unattended mass deployment of SUSE Linux Enterprise Server systems. AutoYaST installations are performed using an AutoYaST control le (also called a “prole”) with your customized installation and conguration data. Publication Date: September 24, 2021 SUSE LLC 1800 South Novell Place Provo, UT 84606 USA https://documentation.suse.com Copyright © 2006– 2021 SUSE LLC and contributors. All rights reserved. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or (at your option) version 1.3; with the Invariant Section being this copyright notice and license. A copy of the license version 1.2 is included in the section entitled “GNU Free Documentation License”. For SUSE trademarks, see https://www.suse.com/company/legal/ . All other third-party trademarks are the property of their respective owners. Trademark symbols (®, ™ etc.) denote trademarks of SUSE and its aliates. Asterisks (*) denote third-party trademarks. All information found in this book has been compiled with utmost attention to detail. However, this does not guarantee complete accuracy. Neither SUSE LLC, its aliates, the authors nor the translators shall be held liable for possible errors or the consequences thereof. Contents 1 Introduction to AutoYaST 1 1.1 Motivation 1 1.2 Overview and Concept 1 I UNDERSTANDING AND CREATING THE AUTOYAST CONTROL FILE 4 2 The AutoYaST Control -
The Linux Storage Stack Diagram
The Linux Storage Stack Diagram version 3.17, 2014-10-17 outlines the Linux storage stack as of Kernel version 3.17 ISCSI USB mmap Fibre Channel Fibre over Ethernet Fibre Channel Fibre Virtual Host Virtual FireWire (anonymous pages) Applications (Processes) LIO malloc vfs_writev, vfs_readv, ... ... stat(2) read(2) open(2) write(2) chmod(2) VFS tcm_fc sbp_target tcm_usb_gadget tcm_vhost tcm_qla2xxx iscsi_target_mod block based FS Network FS pseudo FS special Page ext2 ext3 ext4 proc purpose FS target_core_mod direct I/O NFS coda sysfs Cache (O_DIRECT) xfs btrfs tmpfs ifs smbfs ... pipefs futexfs ramfs target_core_file iso9660 gfs ocfs ... devtmpfs ... ceph usbfs target_core_iblock target_core_pscsi network optional stackable struct bio - sector on disk BIOs (Block I/O) BIOs (Block I/O) - sector cnt devices on top of “normal” - bio_vec cnt block devices drbd LVM - bio_vec index - bio_vec list device mapper mdraid dm-crypt dm-mirror ... dm-cache dm-thin bcache BIOs BIOs Block Layer BIOs I/O Scheduler blkmq maps bios to requests multi queue hooked in device drivers noop Software (they hook in like stacked ... Queues cfq devices do) deadline Hardware Hardware Dispatch ... Dispatch Queue Queues Request Request BIO based Drivers based Drivers based Drivers request-based device mapper targets /dev/nullb* /dev/vd* /dev/rssd* dm-multipath SCSI Mid Layer /dev/rbd* null_blk SCSI upper level drivers virtio_blk mtip32xx /dev/sda /dev/sdb ... sysfs (transport attributes) /dev/nvme#n# /dev/skd* rbd Transport Classes nvme skd scsi_transport_fc network -
The Apple Ecosystem
APPENDIX A The Apple Ecosystem There are a lot of applications used to manage Apple devices in one way or another. Additionally, here’s a list of tools, sorted alphabetically per category in order to remain vendor agnostic. Antivirus Solutions for scanning Macs for viruses and other malware. • AVG: Basic antivirus and spyware detection and remediation. • Avast: Centralized antivirus with a cloud console for tracking incidents and device status. • Avira: Antivirus and a browser extension. Avira Connect allows you to view device status online. • BitDefender: Antivirus and malware managed from a central console. • CarbonBlack: Antivirus and Application Control. • Cylance: Ransomware, advanced threats, fileless malware, and malicious documents in addition to standard antivirus. • Kaspersky: Antivirus with a centralized cloud dashboard to track device status. © Charles Edge and Rich Trouton 2020 707 C. Edge and R. Trouton, Apple Device Management, https://doi.org/10.1007/978-1-4842-5388-5 APPENDIX A THe AppLe ECOSYSteM • Malware Bytes: Antivirus and malware managed from a central console. • McAfee Endpoint Security: Antivirus and advanced threat management with a centralized server to track devices. • Sophos: Antivirus and malware managed from a central console. • Symantec Mobile Device Management: Antivirus and malware managed from a central console. • Trend Micro Endpoint Security: Application whitelisting, antivirus, and ransomware protection in a centralized console. • Wandera: Malicious hot-spot monitoring, jailbreak detection, web gateway for mobile threat detection that integrates with common MDM solutions. Automation Tools Scripty tools used to automate management on the Mac • AutoCasperNBI: Automates the creation of NetBoot Images (read: NBI’s) for use with Casper Imaging. • AutoDMG: Takes a macOS installer (10.10 or newer) and builds a system image suitable for deployment with Imagr, DeployStudio, LANrev, Jamf Pro, and other asr or Apple Systems Restore-based imaging tools. -
PDF File .Pdf
Software Learn what software is available and the installation processes. General Software Software Availability (link) Service Level Agreements How to Register for & Purchase Software from the Spartan Store Setting Up Slack Desktop Notifications Flickr FAQ Import and export Firefox bookmarks Installing Web Browser Extensions: Google Chrome, Safari, FireFox Recommended Software (link) Remote Software & Computer Access Procedure General Software Information Reference Page (Link) Operating Systems Recommended Operating Systems: MacOS & Windows Computer Backup Computer Storage Management Computer Performance Change your macOS Login Password Change your Windows 10 Login Password Backing Up with Windows File History Change the Default Application Associated with a File Type How do I install device drivers? Help for New Mac Users Start your Windows Computer in Safe Mode macOS Startup Key Commands Use VirtualBox to Create a Windows Virtual Machine Create a Disk Image Backup with Macrium Reflect Microsoft Office Request Microsoft Office for State-Owned Computers Microsoft Office Installation for Students Microsoft Office 365 Info and Tutorials Configure Office to Save in Compatibility Mode OneDrive Image Management FAQ Using PowerPoint's Presenter View Saving a Portable PowerPoint Presentation How do I Uninstall Office? Word, Excel, or PowerPoint Crashes or Freezes (macOS) Converting your PowerPoint Presentation to Widescreen (16:9) Convert Columns to Rows, or Rows to Columns using Excel Adobe Adobe Creative Cloud Information & Installation Save