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ppt
ppt

...  Too slow! Linux – ugly, monolithic, but fast ...
Document
Document

... and Advanced Log Analysis (ALA) on Backtrack – Agile strategy for escalating defenses – Cyber investigations process – Scenario for eradicating browser-based spyware – Instructions for implementing the processes Cyber Security: Managing Networks, Conducting Tests, and Investigating Intrusions ...
Red Hat Enterprise Linux 5 EAL4 High-Level Design Version 1.0.1
Red Hat Enterprise Linux 5 EAL4 High-Level Design Version 1.0.1

... This document is provided “AS IS” with no express or implied warranties. Use the information in this document at your own risk. This document may be reproduced or distributed in any form without prior permission provided the copyright notice is retained on all copies. Modified versions of this docum ...
SLES High Level Design  Version 2.25 1
SLES High Level Design Version 2.25 1

... document at your own risk. This document may be reproduced or distributed in any form without prior permission provided the copyright notice is retained on all copies. Modified versions of this document may be freely distributed provided that they are clearly identified as such, and this copyright i ...
Processes and Threads
Processes and Threads

...  Process’ resources are deallocated by operating system.  Parent may terminate execution of children ...
Process Description and Control
Process Description and Control

...  then resume the running process or choose a process of higher priority  Memory ...
IDS and IPS
IDS and IPS

...  An IPS looks at the contents of the packets and/or can correlate over time to determine if an attack is happening.  An IPS works in tandem with a firewall to make sure that the traffic the firewall permitted is actual legitimate traffic. ...
INTRUSION DETECTION SYSTEM (IDS)
INTRUSION DETECTION SYSTEM (IDS)

... • Attacker maintain hard fought access by covering tracks. Hide from users and system admin using variety of techniques • covering track in Unix, Windows and network is different – Hide files to simply name like dot space ...
Chapter 1 – 15 Essay Question Review
Chapter 1 – 15 Essay Question Review

... operating system. All new services are added to user space and consequently do not require modification of the kernel. The microkernel also provides more security and reliability, since most services are running as user — rather than kernel — processes. Unfortunately, microkernels can suffer from pe ...
chubby and paxos
chubby and paxos

... Pick a new client epoch number(sent by clients) Master responds to master location requests Rebuilds session memory strucuture KeepAlives allowed Notifies clients of failure Master waits sessions syncs Fully operational While operating, handles are verified Ephemeral files removed Dennis Kafura – CS ...
EE-EmbeddedOperatingSystems-II
EE-EmbeddedOperatingSystems-II

... Ref: http://developer.android.com/reference/org/apache/http/package-summary.html http://developer.android.com/reference/javax/net/ssl/package-summary.html http://www.ibm.com/developerworks/opensource/library/x-android/index.html ...
Attacks and vulnerabilities
Attacks and vulnerabilities

... mass audience, collect response from the gullible ...
OS Virtualization
OS Virtualization

... table, page fault traps to hypervisor. – Paravirtualized OS: Since OS has been modified to account for hypervisor, page table updates can be followed by call to hypervisor about changes. ...
OS Virtualization
OS Virtualization

... table, page fault traps to hypervisor. – Paravirtualized OS: Since OS has been modified to account for hypervisor, page table updates can be followed by call to hypervisor about changes. ...
Under Threat or Compromise - Every Detail Counts
Under Threat or Compromise - Every Detail Counts

... commands the attackers sent. This may lead investigators to other compromised machines or machines the attackers were scanning for vulnerabilities. Understanding the attackers’ actions and intent helps defenders build successful containment and mitigation strategies. Once the scope has been conclusi ...
Interrupts and interrupt handlers - Washington University in St. Louis
Interrupts and interrupt handlers - Washington University in St. Louis

... Register new handlers with request_irq(), three key attributes: – IRQ number – IRQ handler function – Whether the IRQ is shared ...
資工系網媒所NEWS實驗室
資工系網媒所NEWS實驗室

... separate module of the operating system, allowing it to be replaced with a different algorithm if necessary. Either SSTF or LOOK is a reasonable choice for the default algorithm. 資工系網媒所 NEWS實驗室 ...
Slide 1 - RSWiki
Slide 1 - RSWiki

... separate module of the operating system, allowing it to be replaced with a different algorithm if necessary. Either SSTF or LOOK is a reasonable choice for the default algorithm. 資工系網媒所 NEWS實驗室 ...
Figure 5.01
Figure 5.01

...  Thread Specific Data  Allows each thread to have its own copy of data  Useful when you do not have control over the thread creation process (i.e., when using a thread pool) ...
IPSec
IPSec

...  IPSec is an abbreviation for IP security, which is used to transfer data securely over unprotected networks like “Internet”.  It acts at the networks layer and is part of IPv6.  The protocol/process is as follows :  Sender encrypts packets before sending them on the network.  Receiver authenti ...
Abstract View of System Components
Abstract View of System Components

... Why Study Operating Systems?  We want to have an efficient O/S because it  consumes more resources than any other program.  is the most complex program.  is necessary for any use of the computer.  is used by many users.  Efficiency is measured through  Functionality  Performance: Time and U ...
Chapter 9 Embedded Operating Systems: The Hidden Threat
Chapter 9 Embedded Operating Systems: The Hidden Threat

... Windows and Other Embedded Operating Systems  Recycling common code and reusing technologies  Sound software engineering practices  Also introduce common points of failure  Viruses, worms, Trojans, and other attack vectors ...
Operating-System Structures
Operating-System Structures

... Computer Science, Columbia University ...
Windows
Windows

...  Why not pure microkernel? ...
Monolithic kernel vs. Microkernel
Monolithic kernel vs. Microkernel

... kernel. With the introduction of multitasking (and multithreading) new problems arised, concerning isolation of memory and processes. These problems include issues like race conditions, memory protection and system security itself. The kernel must be able to grant that in case a process cracks down, ...
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Unix security

Unix security refers to the means of securing a Unix or Unix-like operating system. A secure environment is achieved not only by the design concepts of these operating systems, but also through vigilant user and administrative practices.
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