Chapter 10
•
1 like•381 views
The document discusses various methods for securing Linux files, including setting proper file permissions, monitoring log files for suspicious activity, and automating checks for unauthorized file modifications through tools like Tripwire and Samhain. It emphasizes the importance of carefully configuring file permissions, reviewing log files regularly, and detecting any changes to important system files to maintain security and integrity.
Report
Share
Report
Share
![File Security ,[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
OSCh19
This document discusses various security issues related to computer systems and networks. It covers authentication methods, threats like Trojan horses and viruses, intrusion detection techniques, and encryption standards. It also describes security classifications from the Department of Defense and how Windows NT implements configurable security policies ranging from minimal to discretionary protection.
OSCh20
The document provides an overview of the history and components of the Linux operating system. It discusses how Linux originated as a small kernel developed by Linus Torvalds in 1991 and has since evolved through collaborations. The core components of Linux include the kernel, system libraries, system utilities, and kernel modules. It also describes key aspects of Linux such as process management, scheduling, memory management, and file systems.
Ch22
The document provides an overview of the history and design of the Linux operating system in 3 paragraphs:
Linux was first developed in 1991 by Linus Torvalds as a small kernel for compatibility with UNIX. It has since grown through collaboration over the internet to run on various hardware platforms while remaining free and open source. Early versions only supported 386 processors and basic functionality, while later versions added support for new hardware, file systems, and networking.
The core components of Linux include the kernel, system libraries, and system utilities. The kernel provides core system functions and resource management. Libraries and utilities are developed separately but work together to provide a full UNIX-compatible system. Device drivers, file systems, and network protocols can
Factors Affecting the System Safety || Linux
Factors Affecting the System Safety
• Hazard Analysis
• Requirements and Specification
• System Reliability and Safety
• Design
• Testing & Debugging
• Safety Integrity and Risk assessment
• Documentation
Follow : Zain Abid
Main Channel : http://bit.ly/ZainAbid736
Facebook : https://facebook.com/zaiinabid736
Instagram : https://instagram.com/zainabid736
Twitter : https://twitter.com/zainabid736
SnapChat : https://snapchat.com/add/zainabid736
Вячеслав Кабак "Microsoft Sysinternals-Useful Utilities"
This document provides summaries of various system utilities from Sysinternals.com. It groups the utilities into categories such as File and Disk Utilities, Networking Utilities, Process Utilities, Security Utilities, System Information Utilities, and Miscellaneous Utilities. Key utilities are highlighted including PsTools, Process Monitor, Process Explorer, Autoruns, and BgInfo which provide information on processes, system activity in real-time, open files and registry keys, auto-starting programs, and system information for desktop backgrounds. The document serves as a reference guide to powerful free command line tools and applications that can help optimize, troubleshoot, and secure Windows systems.
Runtime potential updater file(s) identification does your software updates a...
One of the major hurdles to widespread usage of application whitelisting with today’s dynamically changing and updating software’s; is the static environment it creates that leaves little scope for changes to the system once whitelisting is enforced. The de-facto method to allow for trusted changes to system is to make selected executable files as trusted and allow changes made to the system through these files even when whitelisting is enforced. The problem with this is; difficulty the user faces in identifying the updater files for third party software. In this paper, we present the method to identify the potential updater files for the third party software in a Microsoft Windows environment. Further we test the method for commonly used third party software, presenting the results of experimentation and effectiveness of our approach.
2009-08-11 IBM Teach the Teachers (IBM T3), Linux Security Overview
Co-presented with Matt Jamison (Sr Architect, DoD Programs) at the IBM Teach the Teacher (IBM T3) conference. Discussed SELinux, Policy Enforcement, Discretionary Access Control, Multi-Level Security vs Multi-Category Security, Role-Based Access Control, usage of SELinux, Linux Audit Subsystem, and host hardening procedures.
Ppt linux
The document discusses Linux security concepts including user accounts, file permissions, groups, auditing, and PAM authentication. It covers the three layers of the Linux OS - the kernel layer, system layer, and user layer. The kernel layer houses core OS resources while the system and user layers provide interfaces and services to users and applications. Access is controlled through permissions assigned to files and directories for different user categories. Security features like auditing and PAM help enforce access controls and authenticate users.
Recommended
OSCh19
This document discusses various security issues related to computer systems and networks. It covers authentication methods, threats like Trojan horses and viruses, intrusion detection techniques, and encryption standards. It also describes security classifications from the Department of Defense and how Windows NT implements configurable security policies ranging from minimal to discretionary protection.
OSCh20
The document provides an overview of the history and components of the Linux operating system. It discusses how Linux originated as a small kernel developed by Linus Torvalds in 1991 and has since evolved through collaborations. The core components of Linux include the kernel, system libraries, system utilities, and kernel modules. It also describes key aspects of Linux such as process management, scheduling, memory management, and file systems.
Ch22
The document provides an overview of the history and design of the Linux operating system in 3 paragraphs:
Linux was first developed in 1991 by Linus Torvalds as a small kernel for compatibility with UNIX. It has since grown through collaboration over the internet to run on various hardware platforms while remaining free and open source. Early versions only supported 386 processors and basic functionality, while later versions added support for new hardware, file systems, and networking.
The core components of Linux include the kernel, system libraries, and system utilities. The kernel provides core system functions and resource management. Libraries and utilities are developed separately but work together to provide a full UNIX-compatible system. Device drivers, file systems, and network protocols can
Factors Affecting the System Safety || Linux
Factors Affecting the System Safety
• Hazard Analysis
• Requirements and Specification
• System Reliability and Safety
• Design
• Testing & Debugging
• Safety Integrity and Risk assessment
• Documentation
Follow : Zain Abid
Main Channel : http://bit.ly/ZainAbid736
Facebook : https://facebook.com/zaiinabid736
Instagram : https://instagram.com/zainabid736
Twitter : https://twitter.com/zainabid736
SnapChat : https://snapchat.com/add/zainabid736
Вячеслав Кабак "Microsoft Sysinternals-Useful Utilities"
This document provides summaries of various system utilities from Sysinternals.com. It groups the utilities into categories such as File and Disk Utilities, Networking Utilities, Process Utilities, Security Utilities, System Information Utilities, and Miscellaneous Utilities. Key utilities are highlighted including PsTools, Process Monitor, Process Explorer, Autoruns, and BgInfo which provide information on processes, system activity in real-time, open files and registry keys, auto-starting programs, and system information for desktop backgrounds. The document serves as a reference guide to powerful free command line tools and applications that can help optimize, troubleshoot, and secure Windows systems.
Runtime potential updater file(s) identification does your software updates a...
One of the major hurdles to widespread usage of application whitelisting with today’s dynamically changing and updating software’s; is the static environment it creates that leaves little scope for changes to the system once whitelisting is enforced. The de-facto method to allow for trusted changes to system is to make selected executable files as trusted and allow changes made to the system through these files even when whitelisting is enforced. The problem with this is; difficulty the user faces in identifying the updater files for third party software. In this paper, we present the method to identify the potential updater files for the third party software in a Microsoft Windows environment. Further we test the method for commonly used third party software, presenting the results of experimentation and effectiveness of our approach.
2009-08-11 IBM Teach the Teachers (IBM T3), Linux Security Overview
Co-presented with Matt Jamison (Sr Architect, DoD Programs) at the IBM Teach the Teacher (IBM T3) conference. Discussed SELinux, Policy Enforcement, Discretionary Access Control, Multi-Level Security vs Multi-Category Security, Role-Based Access Control, usage of SELinux, Linux Audit Subsystem, and host hardening procedures.
Ppt linux
The document discusses Linux security concepts including user accounts, file permissions, groups, auditing, and PAM authentication. It covers the three layers of the Linux OS - the kernel layer, system layer, and user layer. The kernel layer houses core OS resources while the system and user layers provide interfaces and services to users and applications. Access is controlled through permissions assigned to files and directories for different user categories. Security features like auditing and PAM help enforce access controls and authenticate users.
Dominique
- The document discusses securing Windows NT systems by reviewing the NT security architecture, known vulnerabilities, and methods for exploiting them. It provides guidance on hardening NT security through measures like reducing unnecessary services, restricting file and registry permissions, and enforcing stronger passwords. System administrators can assess their security posture using various scanning and auditing tools to detect vulnerabilities, non-compliant configurations, and potential security breaches.
System protection in Operating System
This document discusses computer system protection. It outlines goals of protection like preventing unauthorized access. Principles like least privilege aim to minimize damage from compromised access. Protection domains define which objects and operations processes can access. Access matrices represent these access rights. Examples of early capability-based and language-based protection systems are described.
Intrusion Discovery on Windows
The document describes a procedure for using batch scripting and common tools to identify intrusions on a Microsoft Windows system. The script generates trending data by checking for unusual processes, services, accounts, files and connections. It analyzes the operating system version, registry entries, scheduled tasks, event logs and more. The final summary is a sample batch script that automates running various commands to collect security-related data and output it to log files for administrator review.
SFS (Secure File System)
The document describes a Secure File System (SFS) that is implemented in the Linux kernel to provide encryption of file data for confidentiality. SFS sits between the Virtual File System (VFS) layer and underlying file systems. It transparently encrypts and decrypts file data on read/write. SFS uses AES for encryption and has components for key management, access control, encryption/decryption. It generates per-file random keys, encrypts them with user public keys and stores in a file header for access control. This provides file-level encryption and access control within the kernel for improved security and performance compared to user-space solutions.
Selinux
This document provides an introduction to SELinux, including a brief history of how it was created by the NSA and adopted in major Linux distributions. It explains the differences between Discretionary Access Control (DAC) and Mandatory Access Control (MAC) models. It also describes how SELinux works by enforcing security policies at the kernel level to confine processes and provide fine-grained access controls, and outlines some of the key benefits it provides like auditing and strengthening server security.
Security Enhanced Linux Overview
SELinux (Security Enhanced Linux) is an internal firewall that confines processes and protects the operating system through mandatory access controls. It prevents processes from accessing files or resources without permission. SELinux enforces a security policy that defines what subjects (users and programs) can access which objects (files, devices, ports). It provides confinement for untrusted programs and limits the damage that can be caused by malicious software.
Threats, Vulnerabilities & Security measures in Linux
This presentation is made for my college presentation of explaining "Threats, Vulnerabilities & Security measures in Linux' and also suggestion how you could enhance ur Linux OS security.
Chapter 21 - The Linux System
Linux is an open-source operating system based on UNIX with a modular kernel. It uses processes, memory management and file systems similar to UNIX. The Linux kernel supports features like symmetric multiprocessing, virtual memory and loading of kernel modules. Popular Linux distributions package and distribute the Linux system along with utilities and applications.
Linux intro to advance
The document provides an overview of the Linux operating system, including its history, design principles, components, and key features. It discusses the kernel, processes and threads, scheduling, memory management, file systems, I/O, inter-process communication, networking, and security in Linux. The document is intended to introduce the fundamental concepts and architecture of the Linux system.
First Responders Course - Session 6 - Detection Systems [2004]
The sixth session from a two day training course for potential first responders I ran for a large financial services client.
2008 08-12 SELinux: A Key Component in Secure Infrastructures
Presented at SHARE Conference, "SELinux: A Key Component in Secure Infrastructures"
Covers "what is SELinux?," Type Enforcement, SELinux Usage, and example scenarios.
Linux Security
This document provides an overview of Linux security and auditing. It discusses the history and architecture of Linux, important security concepts like physical security, operating system security, network security, file system security and user/group security. It also describes various Linux security tools that can be used for tasks like vulnerability scanning, auditing, intrusion detection and password cracking.
Asp net whitepaper
This document provides an overview of authentication and security mechanisms in ASP.NET web applications. It discusses the .NET security model, including the Common Language Runtime (CLR) which provides an additional layer of security on top of core OS security. It also covers ASP.NET web application security configurations like permissions, roles, and authentication methods. Configuring options in the web.config file and machine.config file allows enforcing security policies for web applications.
Disabling windows file protection
This document discusses Windows File Protection (WFP) in Windows 2000 and Windows XP. WFP prevents certain system files from being overwritten or replaced to avoid system instability. It can be disabled by changing the SFCDisable registry value, but a kernel debugger is required for a permanent disable. The System File Checker utility verifies and repairs protected files. Driver developers should provide separate INF files for Windows 2000/XP and Windows NT 4.0 to avoid installing system files.
Basic Linux Security
This document discusses basic Linux system security. It recommends securing physical access to machines, using the principle of least privilege by limiting accounts, ports, and applications. It also recommends strong passwords, closing unnecessary ports, encrypting network connections, keeping software updated, using intrusion detection, and advanced techniques like auditing OSes and using virtual machines.
Cs seminar 20070426
The document proposes a desktop security architecture that isolates user data and applications to improve attack resistance. It separates applications into virtual machine appliances with the ability to rollback to known good states. It also proposes using a secured file server in a separate VM, network intrusion detection, and file system intrusion detection enforced through application-specific access contracts. This is intended to limit the impact of attacks and allow faster recovery without system downtime or reboots.
A Critical Analysis of Microsoft Data Protection Solutions
This document provides an overview and analysis of three Microsoft data protection solutions: BitLocker Drive Encryption (BDE), Encrypting File System (EFS), and Rights Management Services (RMS). BDE encrypts the entire hard drive to protect data from offline attacks. EFS encrypts individual files and folders on a system or shared network drive. RMS allows users to control access to documents and emails through usage policies enforced by a server.
Trust is Broken:Incident Response Cases
This document summarizes case studies of software supply chain attacks and discusses challenges in tracking and responding to such attacks. It describes five cases where attackers compromised software vendors or development environments to inject malicious code into legitimate software updates or new installations. The document also outlines trends in shorter attack dwell times and use of VPNs, backdoors, and lateral movement to evade detection. It concludes that cooperation between CSIRT teams and use of threat intelligence are key to quickly responding to sophisticated attackers that can bypass traditional defenses.
Microsoft (Data Protection Solutions)
This document provides an overview and comparison of Microsoft's data protection solutions: BitLocker Drive Encryption (BDE), Encrypting File System (EFS), and Rights Management Services (RMS). BDE encrypts the entire hard drive to protect data when a device is lost or stolen. EFS encrypts individual files and folders on a system and when files are shared remotely. RMS allows document owners to control usage rights and enforce policies when content is distributed externally.
SANS Windows Artifact Analysis 2012
This document summarizes several Windows registry keys and artifacts that can provide information about a user's digital activities. It describes keys that track recently opened files, installed applications, browser history and search terms, network connections, and more. Examining these locations can reveal details like the files and websites a user accessed, when they were accessed, and from where they originated.
Authentication Modules For Linux - PAM Architecture
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
Pluggable authentication modules
This document discusses Pluggable Authentication Modules (PAM) and how they provide a flexible framework for authentication in Linux systems. PAM allows authentication methods to be configured per application using configuration files in /etc/pam.d. Common PAM modules like pam_unix, pam_rootok, and pam_tally2 are described along with their uses for authentication, authorization, password management, and session control. The document provides examples of configuring PAM for applications like SSHD to implement features like limited login attempts, time-based access restrictions, and auditing of user activities.
More Related Content
What's hot
Dominique
- The document discusses securing Windows NT systems by reviewing the NT security architecture, known vulnerabilities, and methods for exploiting them. It provides guidance on hardening NT security through measures like reducing unnecessary services, restricting file and registry permissions, and enforcing stronger passwords. System administrators can assess their security posture using various scanning and auditing tools to detect vulnerabilities, non-compliant configurations, and potential security breaches.
System protection in Operating System
This document discusses computer system protection. It outlines goals of protection like preventing unauthorized access. Principles like least privilege aim to minimize damage from compromised access. Protection domains define which objects and operations processes can access. Access matrices represent these access rights. Examples of early capability-based and language-based protection systems are described.
Intrusion Discovery on Windows
The document describes a procedure for using batch scripting and common tools to identify intrusions on a Microsoft Windows system. The script generates trending data by checking for unusual processes, services, accounts, files and connections. It analyzes the operating system version, registry entries, scheduled tasks, event logs and more. The final summary is a sample batch script that automates running various commands to collect security-related data and output it to log files for administrator review.
SFS (Secure File System)
The document describes a Secure File System (SFS) that is implemented in the Linux kernel to provide encryption of file data for confidentiality. SFS sits between the Virtual File System (VFS) layer and underlying file systems. It transparently encrypts and decrypts file data on read/write. SFS uses AES for encryption and has components for key management, access control, encryption/decryption. It generates per-file random keys, encrypts them with user public keys and stores in a file header for access control. This provides file-level encryption and access control within the kernel for improved security and performance compared to user-space solutions.
Selinux
This document provides an introduction to SELinux, including a brief history of how it was created by the NSA and adopted in major Linux distributions. It explains the differences between Discretionary Access Control (DAC) and Mandatory Access Control (MAC) models. It also describes how SELinux works by enforcing security policies at the kernel level to confine processes and provide fine-grained access controls, and outlines some of the key benefits it provides like auditing and strengthening server security.
Security Enhanced Linux Overview
SELinux (Security Enhanced Linux) is an internal firewall that confines processes and protects the operating system through mandatory access controls. It prevents processes from accessing files or resources without permission. SELinux enforces a security policy that defines what subjects (users and programs) can access which objects (files, devices, ports). It provides confinement for untrusted programs and limits the damage that can be caused by malicious software.
Threats, Vulnerabilities & Security measures in Linux
This presentation is made for my college presentation of explaining "Threats, Vulnerabilities & Security measures in Linux' and also suggestion how you could enhance ur Linux OS security.
Chapter 21 - The Linux System
Linux is an open-source operating system based on UNIX with a modular kernel. It uses processes, memory management and file systems similar to UNIX. The Linux kernel supports features like symmetric multiprocessing, virtual memory and loading of kernel modules. Popular Linux distributions package and distribute the Linux system along with utilities and applications.
Linux intro to advance
The document provides an overview of the Linux operating system, including its history, design principles, components, and key features. It discusses the kernel, processes and threads, scheduling, memory management, file systems, I/O, inter-process communication, networking, and security in Linux. The document is intended to introduce the fundamental concepts and architecture of the Linux system.
First Responders Course - Session 6 - Detection Systems [2004]
The sixth session from a two day training course for potential first responders I ran for a large financial services client.
2008 08-12 SELinux: A Key Component in Secure Infrastructures
Presented at SHARE Conference, "SELinux: A Key Component in Secure Infrastructures"
Covers "what is SELinux?," Type Enforcement, SELinux Usage, and example scenarios.
Linux Security
This document provides an overview of Linux security and auditing. It discusses the history and architecture of Linux, important security concepts like physical security, operating system security, network security, file system security and user/group security. It also describes various Linux security tools that can be used for tasks like vulnerability scanning, auditing, intrusion detection and password cracking.
Asp net whitepaper
This document provides an overview of authentication and security mechanisms in ASP.NET web applications. It discusses the .NET security model, including the Common Language Runtime (CLR) which provides an additional layer of security on top of core OS security. It also covers ASP.NET web application security configurations like permissions, roles, and authentication methods. Configuring options in the web.config file and machine.config file allows enforcing security policies for web applications.
Disabling windows file protection
This document discusses Windows File Protection (WFP) in Windows 2000 and Windows XP. WFP prevents certain system files from being overwritten or replaced to avoid system instability. It can be disabled by changing the SFCDisable registry value, but a kernel debugger is required for a permanent disable. The System File Checker utility verifies and repairs protected files. Driver developers should provide separate INF files for Windows 2000/XP and Windows NT 4.0 to avoid installing system files.
Basic Linux Security
This document discusses basic Linux system security. It recommends securing physical access to machines, using the principle of least privilege by limiting accounts, ports, and applications. It also recommends strong passwords, closing unnecessary ports, encrypting network connections, keeping software updated, using intrusion detection, and advanced techniques like auditing OSes and using virtual machines.
Cs seminar 20070426
The document proposes a desktop security architecture that isolates user data and applications to improve attack resistance. It separates applications into virtual machine appliances with the ability to rollback to known good states. It also proposes using a secured file server in a separate VM, network intrusion detection, and file system intrusion detection enforced through application-specific access contracts. This is intended to limit the impact of attacks and allow faster recovery without system downtime or reboots.
A Critical Analysis of Microsoft Data Protection Solutions
This document provides an overview and analysis of three Microsoft data protection solutions: BitLocker Drive Encryption (BDE), Encrypting File System (EFS), and Rights Management Services (RMS). BDE encrypts the entire hard drive to protect data from offline attacks. EFS encrypts individual files and folders on a system or shared network drive. RMS allows users to control access to documents and emails through usage policies enforced by a server.
Trust is Broken:Incident Response Cases
This document summarizes case studies of software supply chain attacks and discusses challenges in tracking and responding to such attacks. It describes five cases where attackers compromised software vendors or development environments to inject malicious code into legitimate software updates or new installations. The document also outlines trends in shorter attack dwell times and use of VPNs, backdoors, and lateral movement to evade detection. It concludes that cooperation between CSIRT teams and use of threat intelligence are key to quickly responding to sophisticated attackers that can bypass traditional defenses.
Microsoft (Data Protection Solutions)
This document provides an overview and comparison of Microsoft's data protection solutions: BitLocker Drive Encryption (BDE), Encrypting File System (EFS), and Rights Management Services (RMS). BDE encrypts the entire hard drive to protect data when a device is lost or stolen. EFS encrypts individual files and folders on a system and when files are shared remotely. RMS allows document owners to control usage rights and enforce policies when content is distributed externally.
SANS Windows Artifact Analysis 2012
This document summarizes several Windows registry keys and artifacts that can provide information about a user's digital activities. It describes keys that track recently opened files, installed applications, browser history and search terms, network connections, and more. Examining these locations can reveal details like the files and websites a user accessed, when they were accessed, and from where they originated.
What's hot (20)
Threats, Vulnerabilities & Security measures in Linux
Threats, Vulnerabilities & Security measures in Linux
First Responders Course - Session 6 - Detection Systems [2004]
First Responders Course - Session 6 - Detection Systems [2004]
2008 08-12 SELinux: A Key Component in Secure Infrastructures
2008 08-12 SELinux: A Key Component in Secure Infrastructures
A Critical Analysis of Microsoft Data Protection Solutions
A Critical Analysis of Microsoft Data Protection Solutions
Viewers also liked
Authentication Modules For Linux - PAM Architecture
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
Pluggable authentication modules
This document discusses Pluggable Authentication Modules (PAM) and how they provide a flexible framework for authentication in Linux systems. PAM allows authentication methods to be configured per application using configuration files in /etc/pam.d. Common PAM modules like pam_unix, pam_rootok, and pam_tally2 are described along with their uses for authentication, authorization, password management, and session control. The document provides examples of configuring PAM for applications like SSHD to implement features like limited login attempts, time-based access restrictions, and auditing of user activities.
CTU June 2011 - Guided Hands on Lab on GPO - GPP
This document outlines an agenda for a guided hands-on lab on Group Policy Objects (GPO) and Group Policy Preferences (GPP). The lab includes 5 sessions that demonstrate how to restrict local administrator groups, deploy printers, manage Office settings, use WMI filters for targeting, and perform basic troubleshooting. It provides instructions for configuring GPOs and GPPs to achieve specific results on virtual client machines. Tips are also shared on GPO/GPP functionality like apply once settings and identifying conflicting preferences.
Chapter 09
The document discusses various topics related to user security in Linux systems. It covers selecting strong passwords, managing passwords using tools like passwd and PAM, using utilities like sudo and vlock to control access, and seeing who is logged into the system. It emphasizes the importance of password security and provides tips for creating secure passwords.
01 server manager spiffy
Server Manager in Windows Server 2012 was redesigned to improve the admin experience. It features a metro style interface for managing local and remote servers simultaneously. Admins can now multi-select servers and start services together, create custom server groups, filter servers, and remotely add roles to local and remote servers including Server Core. Server Manager also integrates with PowerShell for automating management tasks.
Active Directory Upgrade
This document discusses upgrading an existing Active Directory environment from Windows Server 2003 to Windows Server 2008 R2, including new features in Windows Server 2008 R2, server version requirements, installation options, recommended upgrade scenarios to address, and considerations for time configuration, network ports, Kerberos encryption changes, and other known issues.
Agile in Action - Act 2: Development
The document discusses how developers can use Visual Studio 2010 and Team Foundation Server (TFS) to work in an Agile environment. It describes how developers can set up their development environment by getting the required source code from TFS, identify and manage their work using work items and queries, work offline by making source code available, and enhance code quality using check-in policies and notes.
As Algas
O documento descreve as principais características do Reino Protoctista, incluindo que pode ter formas unicelulares ou pluricelulares, são eucariontes, podem ser autótrofos ou heterótrofos e possuem organelas verdadeiras. Ele também lista as divisões de protozoários e algas protistas que compõem o reino.
Viewers also liked (8)
Authentication Modules For Linux - PAM Architecture
Authentication Modules For Linux - PAM Architecture
Similar to Chapter 10
Title Fedora Linux OS Access Control__20231104_222610_0000.pptx
Fedora Linux is a popular open source operating system developed by Red Hat. The document discusses Fedora's access control features including file permissions, user and group management, ACLs, SELinux, and firewall configuration. It also covers the importance of access control for security, data protection, and system integrity. Logging and auditing tools are also described.
Linux security
In this PPT we are discussing about the Linux security and in that we have Linux server ,operating system , selinux, users and groups
Expo ciberseguridad
Linux is an open source operating system first created in 1991. It is maintained by a community of programmers and comes in various distributions. The source code is freely available and can be modified. Linux is widely used as a network operating system, including in security operations centers (SOC), due to its security, customizability and control over the operating system. It allows analysts to build customized security distributions with just the tools needed for their jobs, such as packet capture, malware analysis, intrusion detection and firewall tools.
cibers
Linux is an open source operating system first created in 1991. It is maintained by a community of programmers and comes in various distributions like CentOS and Fedora. Some distributions are free while others like Red Hat Enterprise Server require payment but include support services. Linux is widely used as the operating system of choice in security operations centers due to its security, customizability, and powerful command line interface.
Vista Presentation
A presentation which you can portray to your customer. It is very difficult to put forward the Value Proposition of Windows Vista and other OS to an investor. They require very specific points.
Ch06
Managing system software involves installing software packages and patches periodically. This task is conceptually straightforward but challenging due to the variety of package formats, management tools, and missing features. Before installing software, administrators should understand hardware and software requirements, installation types, tools, disk layout, and pre-installation steps.
Ch06 system administration
Managing system software involves maintaining operating systems, utilities, and applications through periodic installation of software packages and patches. The key challenges are the wide variety of package formats, management tools, and missing features in specific tool sets. Before installing software, administrators should understand hardware and software requirements, installation types and tools, disk layouts, and pre-installation steps.
Poking The Filesystem For Fun And Profit
1) The document discusses writing a rogue filesystem driver that could be used as an attacker tool. It covers motivation, filesystem internals, types of filesystem drivers, and how to write a rogue filesystem driver by implementing functions like superblock operations, inode operations, and file operations.
2) A rogue filesystem driver could be difficult to detect and could selectively spoof, block, or hide file contents to gain a strong foothold in the system. It does not require hooking system calls or compromising the kernel in the same way.
3) Key aspects of developing a rogue driver involve registering the filesystem type, setting up superblock operations, and implementing inode, directory, and file operations to handle
Description Of A Network Administrator
The document discusses functions for defining the volume of a study block diagram for finite element analysis. It involves projecting important topographic nodes onto a desired depth, locating reference nodes along lines, automatically generating a 3D tetrahedron mesh, defining nodal conditions, and validating the solid model. Stress analysis is then performed on the finite element model by calculating stresses based on the relationship between reaction forces and stresses, and producing stress outputs and energy diagrams.
9.system analysis
The document discusses a system analysis of a cloud storage security system. It analyzes the current system and requirements to specify a new system. A feasibility study is then conducted to determine if the new system is worth developing. The feasibility study examines operational feasibility like whether the system will be used and supported. It also looks at technical feasibility to ensure the necessary technology exists and financial/economic feasibility to determine if it provides benefits without requiring additional resources. Finally, the document describes the proposed new system which has modules for the graphical user interface, authentication/authorization, connection management, and security implementation.
Hiding files.pptx
This document discusses various techniques that hackers use to hide files on a compromised system in order to avoid detection. It describes methods such as using hidden file attributes, placing files in unusual locations like the recycling bin or system folders, using alternate data streams, modifying system tools to ignore certain files, and advanced techniques like function hooking that intercept calls between programs and the operating system kernel. The most effective techniques for deeply hiding files require elevated privileges but are also more difficult to detect than simple methods.
First Responders Course - Session 7 - Incident Scope Assessment [2004]
The seventh session from a two day course I ran for potential first responders in a large financial services client.
SELinux Basic Usage
This document provides an overview of Security Enhanced Linux (SELinux). It discusses what SELinux is, how it implements mandatory access control on Linux systems, and some basic SELinux concepts like types, users, roles, and the policy. It also covers installing SELinux on CentOS 7 and checking the mode.
Ch11 system administration
The document discusses system security and provides seven common sense rules for security. It covers account security, file permissions, data encryption, single user security, dialup modems, security tools, and an overview of viruses, trojans, and worms. Monitoring logs, using security scanning tools, and educating yourself on security best practices are emphasized as important ways to help secure systems.
Ch11
The document discusses system security and provides seven common sense rules for security. It covers account security, file permissions, data encryption, single user security, dialup modems, security tools, and an overview of viruses, trojans, and worms. Monitoring logs, using security scanning tools, and educating yourself on security best practices are emphasized as important ways to help secure systems.
The “Tripwire” system calculates all the hashes for all executable f.pdf
The “Tripwire” system calculates all the hashes for all executable files on a clean computer and
then compares the hashes with the actual files, when the machine is scanned, to ensure nothing
has changed and no malware is hiding as legitimate programs.
1) What kind of attacks will not be detectable by such a scheme?
2) What attack will render the above strategy useless (i.e. will not find infected files, even if they
exist).
Solution
The near-ubiquitous UNIX system is an example of a file system where such monitoring is
useful. Flaws
and weaknesses in typical UNIX systems are well-documented (e.g., [8, 25, 19, 4, 9]). UNIX
file systems
are susceptible to threats in the guise of unauthorized users, intruders, viruses, worms, and logic
bombs
as well as failures and bugs. As such, UNIX system administrators are faced with prospects of
subtle,
difficult-to-detect damage to files, malicious and accidental.
Tripwire is an integrity checking tool designed for the UNIX environment to aid system
administrators to
monitor their file systems for unauthorized modifications. First made available on November 2,
1992, it has
proven to be a popular tool, being portable, configurable, scalable, flexible, manageable,
automatable, and
secure. It was written in response to repeated break-in activity on the Internet, and the difficulty
experienced
by affected administrators in finding all of the “backdoors” left by the intruders.
To aid in the detection of the appropriate threats, system administrators would use an integrity
checker to
monitor file systems for added, deleted, and changed files. Meaningfully reporting changed files
is difficult,
because most files are expected to change: system log files are written to, program sources are
updated,
and documents are revised. Typically, these changes would not concern system administrators.
However,
changes to certain files, such as system binaries, might elicit a different reaction.
The database used by the integrity checker should be protected from unauthorized
modifications; an intruder
who can change the database can subvert the entire integrity checking scheme. Although the
system administrator
can secure the database by storing it on some media inaccessible to remote intruders (e.g., paper
printout), usability is sacrificed. A database stored in some machine readable format may risk
unauthorized
modification, but allows the integrity checking process to be automated. Storing the database on
read-only
media provides the best of both approaches, allowing machine access but preventing changes.
Most available UNIX security tools fall into two categories: static audit tools and integrity
checkers.
Among the most prominent are COPS[8], TAMU[22], crc check[8], Hobgoblin[15], and
ATP[28].5 A few
commercial security tools also exist, but they are comparable to the user-community tools
mentioned here.
While many of these tools may be outstanding in their own right, most are mismatches for
integrity checking
in UNIX env.
prateekporwal
This document provides an overview of network management with Linux. It discusses key topics such as:
- Why Linux is significant, including its growing popularity, power, ability to run on multiple hardware platforms, and speed and stability.
- The basic Linux system structure including user commands, the shell for interpreting commands, and the kernel for managing hardware resources.
- Common shells like Bash used for calling commands and programming.
- Basic Linux file system organization with directories, pathnames, and special filenames.
- File permissions including read, write, and execute permissions for owners, groups and others.
- Virtual file systems and how they provide a consistent view of data storage.
- User management with tools like useradd
101 4.5 manage file permissions and ownership v3
This document discusses Linux file permissions and ownership. It covers commands used to manage permissions and ownership, including chmod, chown, chgrp, umask. Key areas covered include permissions for users, groups and others; permission levels for files and directories; and configuring user and group information stored in /etc/passwd, /etc/shadow, and /etc/groups files. The goal is to teach system administrators how to manage access permissions on files and directories to maintain security.
16. Computer Systems Basic Software 2
The document provides an overview of basic computer operating systems concepts. It discusses file management, file systems, directories, paths, file operations, and roles in file management. It also summarizes concepts related to security management, failure management, supervisors, and where to find more information on operating systems.
Linux remote
Linux systems often have opportunities for privilege escalation through misconfigured files, directories, or binaries. An attacker can use tools like Metasploit, searchsploit, and exploitDB to search for known exploits to escalate privileges on older or outdated systems. System enumeration reveals useful information for privilege escalation like kernel versions, user accounts, permissions, and processes. Misconfigured permissions on files, directories, or binaries with sudo/setuid/setgid can allow escalating privileges by modifying or executing files as a privileged user.
Similar to Chapter 10 (20)
Title Fedora Linux OS Access Control__20231104_222610_0000.pptx
Title Fedora Linux OS Access Control__20231104_222610_0000.pptx
First Responders Course - Session 7 - Incident Scope Assessment [2004]
First Responders Course - Session 7 - Incident Scope Assessment [2004]
The “Tripwire” system calculates all the hashes for all executable f.pdf
The “Tripwire” system calculates all the hashes for all executable f.pdf
More from cclay3
Chapter 08
This chapter discusses commonly used cryptographic systems and how cryptography is applied to make computer systems more secure. It covers symmetric and asymmetric encryption algorithms, digital signatures, certificates, and encryption utilities like PGP and GPG. Specific techniques covered include DES, Triple DES, AES, SSL, Kerberos, VPNs, and how tools like SSH, RPM, and encrypted file systems provide additional security.
Chapter 06
This chapter discusses configuring major network services on Linux servers including dynamic routing protocols, DNS servers, email servers, and web servers. It covers setting up routing protocols like RIP and OSPF, configuring the BIND DNS server software, setting up a sendmail email server, and using the Apache web server on Linux.
Chapter 05
The document discusses several methods for configuring file sharing services on Linux systems. It covers setting up an FTP server, using NFS to share files between Linux and UNIX systems, emulating a NetWare file server using the mars-nwe package, and implementing Windows file sharing protocols using Samba. Key components covered include configuring the wu-ftpd FTP server, using the mount command and /etc/exports file for NFS, and setting up Samba servers and clients for Windows integration.
Chapter 04
The document discusses configuring various client services on Linux networks, including superservers that handle multiple services, administrative services like logging and printing, and basic information services like finger and talk. It provides details on setting up and using services like TCP Wrappers, NTP, SNMP, printing with lpd, networking testing with tools like echo and chargen, mailing lists, news servers, and more.
Chapter 03
The document discusses configuring client services on Linux such as DNS name resolution, dial-up network access using PPP, DHCP, LDAP, and running graphical applications remotely. It also covers using common client tools like web browsers and email clients. Key topics include configuring the DNS resolver manually or graphically, understanding PPP connections, DHCP, LDAP, running X applications remotely, and popular Linux email clients.
Chapter 02
Linux networking devices differ from other devices in that they are installed in the kernel and handle networking. Networking can be configured using scripts and command line utilities like ifconfig and route or graphical tools. Basic networking utilities like ping, telnet, and traceroute can be used to test and troubleshoot network connectivity.
Chapter 12
The document discusses network security tools in Linux including port scanners, packet sniffers, and intrusion detection systems. Port scanners like Nmap can identify services on a system by probing open ports, while packet sniffers such as Ethereal examine all network traffic. Intrusion detection software watches for intrusion attempts, with PortSentry monitoring for port scans and LIDS securing the system. System administrators can use these tools along with security audits to test vulnerabilities and improve their network security.
Chapter 11
This chapter discusses various types of network security threats such as Trojan horses, viruses, worms, denial-of-service attacks, and buffer overflow attacks. It describes how Linux uses IP Chains and IP Tables to implement firewalls through packet filtering and rules. Network address translation, transparent proxies, and Secure Shell (SSH) are presented as methods to protect and encrypt network traffic. Commercial firewall products and virtual private networks are also summarized.
Chapter 01
This document provides an overview of networking fundamentals including the development of computer networks, common networking hardware and technologies, networking software and protocols, IP addressing, routing concepts, and transport layer protocols. Key topics covered include local area networks, peer-to-peer and client-server models, Ethernet, wireless LANs, cabling options, network topologies, the OSI and Internet models, IPv4 and IPv6, TCP, UDP, domain name services, and routing tables.
More from cclay3 (9)
Recently uploaded
clinical examination of hip joint (1).pdf
described clinical examination all orthopeadic conditions .
DRUGS AND ITS classification slide share
Any substance (other than food) that is used to prevent, diagnose, treat, or relieve symptoms of a
disease or abnormal condition
Top five deadliest dog breeds in America
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
PCOS corelations and management through Ayurveda.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
-------------------------------------------------------------------------------
Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
-------------------------------------------------------------------------------
For more information about PECB:
Website: https://pecb.com/
LinkedIn: https://www.linkedin.com/company/pecb/
Facebook: https://www.facebook.com/PECBInternational/
Slideshare: http://www.slideshare.net/PECBCERTIFICATION
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)Academy of Science of South Africa
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.Assessment and Planning in Educational technology.pptx
In an education system, it is understood that assessment is only for the students, but on the other hand, the Assessment of teachers is also an important aspect of the education system that ensures teachers are providing high-quality instruction to students. The assessment process can be used to provide feedback and support for professional development, to inform decisions about teacher retention or promotion, or to evaluate teacher effectiveness for accountability purposes.
How to Manage Your Lost Opportunities in Odoo 17 CRM
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
The History of Stoke Newington Street Names
Presented at the Stoke Newington Literary Festival on 9th June 2024
www.StokeNewingtonHistory.com
Introduction to AI for Nonprofits with Tapp Network
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Recently uploaded (20)
Film vocab for eal 3 students: Australia the movie
Film vocab for eal 3 students: Australia the movie
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
Assessment and Planning in Educational technology.pptx
Assessment and Planning in Educational technology.pptx
How to Manage Your Lost Opportunities in Odoo 17 CRM
How to Manage Your Lost Opportunities in Odoo 17 CRM
Pride Month Slides 2024 David Douglas School District
Pride Month Slides 2024 David Douglas School District
Introduction to AI for Nonprofits with Tapp Network
Introduction to AI for Nonprofits with Tapp Network
Chapter 10
- 1. Linux Networking and Security Chapter 10 File Security
- 4. Reviewing Linux File Permissions
- 5. Reviewing Linux File Permissions
- 12. Using the System Log for Security Checks
- 13. Using the System Log for Security Checks