Ch10 system administration
•Download as PPT, PDF•
0 likes•742 views
The document discusses user account management tasks for system administrators, including creating login names, assigning home directories and user IDs, setting passwords and password policies, and tools for managing user accounts. It covers challenges around reusable passwords and approaches to improve security such as password aging, lockouts for failed attempts, and one-time password tokens.
Report
Share
Report
Share
![Chapter Objectives ,[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
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.
Ch12
This document discusses disk and file system concepts including:
- Creating file systems using newfs and how it connects to mkfs
- Mounting file systems manually, via fstab, and using volume manager
- Identifying mounted file systems using mount, df, and mnttab
- Repairing file systems using fsck and handling recoverable vs unrecoverable damage
- Benefits of journaling file systems like reduced reboot time and data retention
Ch04
The document discusses the boot sequence of a computer system. It examines each step including the PROM monitor, boot block, secondary boot loader, and OS kernel initialization. It also covers modifying the boot process, selecting alternate boot devices, different boot loaders, and proper system shutdown procedures.
Ch10
The document discusses user account management tasks for system administrators, including creating login names, assigning home directories and user IDs, setting passwords and shells, and formatting the password file. It describes challenges around reusable passwords and methods to improve security such as password aging, lockouts for failed attempts, and one-time password tokens.
Ch02
This document defines operating system concepts and terminology, and explores the history of operating systems. It discusses early and modern operating systems, distinguishing features like resource sharing, storage access control, and memory protection. The document also covers UNIX and Windows architecture, hardware considerations, and the development history of UNIX, Windows, and Mac OS to provide context for system administration tasks.
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.
Ch14 system administration
Configuring and managing printers involves understanding printing concepts, print server and client configuration, and homogeneous and heterogeneous printing. It requires setting up print services under different operating systems like Windows, BSD and System V. Troubleshooting involves checking printers, print queues, filters and data files. Heterogeneous printing across operating systems is the most challenging.
Ch16 system administration
This document discusses network configuration files and utilities on UNIX systems. It examines common configuration files such as /etc/hosts, /etc/hostname.if_name, /etc/nodename, /etc/services, /etc/inetd.conf, and /etc/resolv.conf that store network settings. It also describes configuration commands like ifconfig and route that can be used to modify network interfaces and routing tables. The document notes that while network configuration methods are generally similar across UNIX, there are also OS-specific differences to consider.
Recommended
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.
Ch12
This document discusses disk and file system concepts including:
- Creating file systems using newfs and how it connects to mkfs
- Mounting file systems manually, via fstab, and using volume manager
- Identifying mounted file systems using mount, df, and mnttab
- Repairing file systems using fsck and handling recoverable vs unrecoverable damage
- Benefits of journaling file systems like reduced reboot time and data retention
Ch04
The document discusses the boot sequence of a computer system. It examines each step including the PROM monitor, boot block, secondary boot loader, and OS kernel initialization. It also covers modifying the boot process, selecting alternate boot devices, different boot loaders, and proper system shutdown procedures.
Ch10
The document discusses user account management tasks for system administrators, including creating login names, assigning home directories and user IDs, setting passwords and shells, and formatting the password file. It describes challenges around reusable passwords and methods to improve security such as password aging, lockouts for failed attempts, and one-time password tokens.
Ch02
This document defines operating system concepts and terminology, and explores the history of operating systems. It discusses early and modern operating systems, distinguishing features like resource sharing, storage access control, and memory protection. The document also covers UNIX and Windows architecture, hardware considerations, and the development history of UNIX, Windows, and Mac OS to provide context for system administration tasks.
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.
Ch14 system administration
Configuring and managing printers involves understanding printing concepts, print server and client configuration, and homogeneous and heterogeneous printing. It requires setting up print services under different operating systems like Windows, BSD and System V. Troubleshooting involves checking printers, print queues, filters and data files. Heterogeneous printing across operating systems is the most challenging.
Ch16 system administration
This document discusses network configuration files and utilities on UNIX systems. It examines common configuration files such as /etc/hosts, /etc/hostname.if_name, /etc/nodename, /etc/services, /etc/inetd.conf, and /etc/resolv.conf that store network settings. It also describes configuration commands like ifconfig and route that can be used to modify network interfaces and routing tables. The document notes that while network configuration methods are generally similar across UNIX, there are also OS-specific differences to consider.
Ch08
The document discusses disk drives and file systems. It covers disk components, geometry, partitioning, formatting, interfaces like SCSI, IDE, and Fibre Channel. It explains concepts such as cylinders, tracks, sectors, and how disk addressing works. It discusses disk formatting for SCSI and IDE drives, and how alternate sectors are used to map out bad blocks. Load balancing techniques like splitting file systems across multiple disks and spindles are also summarized.
UNIT II-Programming in Linux
This class notes is meant for M.Sc(Ele&Commun) II-semester students of SKU and other universities
Structure of operating system
The document discusses various components and structures of operating systems. It covers topics like process management, memory management, file management, I/O management, networking, protection systems, and system calls. Operating systems are commonly structured using layers or modules to separate mechanisms from policies and simplify debugging. Well-known examples like MS-DOS, UNIX, and OS/2 are discussed to illustrate different approaches to system design and implementation.
App A
The document provides an overview of the Unix operating system, including its history, design principles, and key components. It describes how Unix was developed at Bell Labs in the 1960s and later influenced by BSD at UC Berkeley. The core elements discussed include the process model, file system, I/O, and standard user interface through shells and commands.
Operating System Concepts Presentation
Operating System Concepts was presented by Nitish Jadia in Bhopal null meet, to make people aware of the internal workings of the OS they use.
The contents and explanation of this PPT was inspired and taken from Operating System Concepts by by silberschatz galvin gagne.
Ch07
This document discusses system devices and device configuration from both the hardware and software perspectives on various operating systems like Windows, UNIX, Linux, and Solaris. It covers device terminology, device naming schemes, how devices are represented in the operating system, and how to view the system's device configuration from both the PROM and software levels. The goal is to understand how devices are interconnected, configured, and accessed on the system.
Operating System Structure (documentation)
1. Operating system structures can be simple, layered, or use a microkernel approach. Simple structures like MS-DOS do not have well-defined layers, while layered structures break the OS into smaller, more modular components. Microkernel structures remove nonessential components from the kernel into user-level programs.
2. Modern OSes often use a hybrid approach, combining elements from different structures. They may also use loadable kernel modules to dynamically link additional services.
3. A task control block (TCB) contains the state of a thread of execution in an OS, and typically includes the program counter, CPU registers, stack, I/O assignments, timers, and kernel data structures.
Notes for LX0-101 Linux
These are notes I made while I was studying. The Linux community is so friendly and shares so much, so I am uploading my work to give back to the community. You won't find answers to test questions here, but you will find some solid notes around each of the exam points.
Windows Architecture Explained by Stacksol
Now here we explained the windows architecture. The inside view of Microsoft Windows. The architecture of Windows NT, a line of operating systems produced and sold by Microsoft, is a layered design that consists of two main components, user mode and kernel mode.
Operating System lab
This document summarizes an operating system lab presentation. It discusses the following key points:
- The presentation is about parallel processing, multithreading, concurrency, and distributed systems. Prerequisites include knowledge of operating systems and Java.
- Evaluation will include tests, projects, homework, classwork, and attendance.
- It covers Java threads including the Thread and Runnable interfaces, creating Runnable objects, starting threads, and getting/setting thread properties like name, priority, and daemon status.
- Synchronization techniques like Peterson's algorithm and semaphores are presented for solving the critical section problem in multithreaded programs. Sample code demonstrates implementing these techniques.
Chapter 01
This document provides an introduction to operating systems, covering their history, concepts, structure, and functions. It discusses what an operating system is, provides a brief history of early operating systems from batch systems to modern personal computers. It also describes different types of operating systems, computer hardware components, operating system concepts like processes and file systems, how system calls work, examples of common system calls, and different approaches to structuring operating systems.
System calls
This presentation discusses system calls and provides an overview of their key aspects:
System calls provide an interface between processes and the operating system. They allow programs to request services from the OS like reading/writing files. There are different methods of passing parameters to the OS, such as via registers, parameter blocks, or pushing to the stack. System calls fall into categories including process control, file management, device management, information maintenance, and communication. An example is given of how system calls would be used in a program to copy data between two files.
Windows 7 Architecture
History
Description of Windows Architecture
Layered Architecture
Portability
System Components
Processes & Threads
Kernel Scheduling
Object Manager
Virtual Memory Management
File System
Memory Management
LINUX Device Drivers
The Linux kernel acts as an interface between applications and hardware, managing system resources and providing access through system calls; it uses a monolithic design where all components run in the kernel thread for high performance but can be difficult to maintain, though Linux allows dynamic loading of modules. Device drivers interface hardware like keyboards, hard disks, and network devices with the operating system, and are implemented as loadable kernel modules that are compiled using special makefiles and registered with the kernel through system calls.
OPERATING SYSTEMS DESIGN AND IMPLEMENTATION
This document provides an overview of operating systems design and implementation. It discusses the basic functions of an operating system as an extended virtual machine and a resource manager. It describes the evolution of operating systems through four generations from the earliest batch systems using vacuum tubes and plugboards to today's personal computers. The document outlines key components of operating systems including processes, file systems, system calls, and virtual machines. It provides examples of early batch processing systems, multiprogramming, and the structure of system calls. Finally, it discusses different approaches to operating system structure such as layered systems, virtual machines, and the client-server model.
Input output in linux
Linux treats all devices as files that can be accessed in the same way. Devices are split into three categories: block devices, character devices, and network devices. Block devices represent storage devices and allow random access to fixed size blocks of data. Character devices like keyboards are accessed sequentially one character at a time. Network devices are accessed indirectly through opening a connection to the kernel's networking subsystem rather than direct data transfer.
Chapter 2 - Operating System Structures
The document summarizes key aspects of operating system structures including:
1) Operating systems provide services to users like user interfaces, program execution, I/O, file manipulation and resource allocation. They also ensure efficient system operation through accounting and protection.
2) System calls are the programming interface to OS services, accessed via APIs. Common APIs include Win32, POSIX, and Java.
3) Operating systems can have different structures like layered, modular, microkernel and virtual machine approaches. They are implemented through system programs, boot processes, and configuration for specific hardware.
OS - Ch2
The document summarizes key aspects of operating system structures including:
1) Operating systems provide services to users like user interfaces, program execution, I/O, file manipulation and resource allocation. They also ensure efficient system operation through accounting and protection.
2) System calls are the programming interface to OS services, accessed via APIs. Common APIs include Win32, POSIX, and Java.
3) Operating systems can have different structures like layered, modular, microkernel and virtual machine approaches. They are implemented through system programs, boot processes, and configuration for specific hardware.
linux kernel overview 2013
The document discusses the Linux kernel. It begins with background on Linux and defines a kernel. It describes the Linux kernel's monolithic architecture and discusses kernel modules. It provides details on module management, driver registration, and conflict resolution. It also provides an overview of key Linux kernel functions like process management, memory management, file systems, I/O management, and networking. It concludes with details on the Linux kernel development cycle.
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.
Ch22 system administration
This document provides an overview of electronic mail and email delivery systems. It discusses the basic roles of the Mail User Agent (MUA), Mail Delivery Agent (MDA), and Mail Transport Agent (MTA) in processing and delivering emails. It also covers common email protocols, the two primary models for email management ("every host" and "smart hub/thin client"), considerations for choosing an MTA like Sendmail, and key configuration files and variables used to customize Sendmail behavior.
Ch05 system administration
The document discusses various methods for installing operating systems. It covers hardware requirements, preparing for installation, different installation types including desktop, server and dual-boot installations. It also discusses Windows, Linux, Solaris and BSD installations and outlines unattended network installations using answer files.
More Related Content
What's hot
Ch08
The document discusses disk drives and file systems. It covers disk components, geometry, partitioning, formatting, interfaces like SCSI, IDE, and Fibre Channel. It explains concepts such as cylinders, tracks, sectors, and how disk addressing works. It discusses disk formatting for SCSI and IDE drives, and how alternate sectors are used to map out bad blocks. Load balancing techniques like splitting file systems across multiple disks and spindles are also summarized.
UNIT II-Programming in Linux
This class notes is meant for M.Sc(Ele&Commun) II-semester students of SKU and other universities
Structure of operating system
The document discusses various components and structures of operating systems. It covers topics like process management, memory management, file management, I/O management, networking, protection systems, and system calls. Operating systems are commonly structured using layers or modules to separate mechanisms from policies and simplify debugging. Well-known examples like MS-DOS, UNIX, and OS/2 are discussed to illustrate different approaches to system design and implementation.
App A
The document provides an overview of the Unix operating system, including its history, design principles, and key components. It describes how Unix was developed at Bell Labs in the 1960s and later influenced by BSD at UC Berkeley. The core elements discussed include the process model, file system, I/O, and standard user interface through shells and commands.
Operating System Concepts Presentation
Operating System Concepts was presented by Nitish Jadia in Bhopal null meet, to make people aware of the internal workings of the OS they use.
The contents and explanation of this PPT was inspired and taken from Operating System Concepts by by silberschatz galvin gagne.
Ch07
This document discusses system devices and device configuration from both the hardware and software perspectives on various operating systems like Windows, UNIX, Linux, and Solaris. It covers device terminology, device naming schemes, how devices are represented in the operating system, and how to view the system's device configuration from both the PROM and software levels. The goal is to understand how devices are interconnected, configured, and accessed on the system.
Operating System Structure (documentation)
1. Operating system structures can be simple, layered, or use a microkernel approach. Simple structures like MS-DOS do not have well-defined layers, while layered structures break the OS into smaller, more modular components. Microkernel structures remove nonessential components from the kernel into user-level programs.
2. Modern OSes often use a hybrid approach, combining elements from different structures. They may also use loadable kernel modules to dynamically link additional services.
3. A task control block (TCB) contains the state of a thread of execution in an OS, and typically includes the program counter, CPU registers, stack, I/O assignments, timers, and kernel data structures.
Notes for LX0-101 Linux
These are notes I made while I was studying. The Linux community is so friendly and shares so much, so I am uploading my work to give back to the community. You won't find answers to test questions here, but you will find some solid notes around each of the exam points.
Windows Architecture Explained by Stacksol
Now here we explained the windows architecture. The inside view of Microsoft Windows. The architecture of Windows NT, a line of operating systems produced and sold by Microsoft, is a layered design that consists of two main components, user mode and kernel mode.
Operating System lab
This document summarizes an operating system lab presentation. It discusses the following key points:
- The presentation is about parallel processing, multithreading, concurrency, and distributed systems. Prerequisites include knowledge of operating systems and Java.
- Evaluation will include tests, projects, homework, classwork, and attendance.
- It covers Java threads including the Thread and Runnable interfaces, creating Runnable objects, starting threads, and getting/setting thread properties like name, priority, and daemon status.
- Synchronization techniques like Peterson's algorithm and semaphores are presented for solving the critical section problem in multithreaded programs. Sample code demonstrates implementing these techniques.
Chapter 01
This document provides an introduction to operating systems, covering their history, concepts, structure, and functions. It discusses what an operating system is, provides a brief history of early operating systems from batch systems to modern personal computers. It also describes different types of operating systems, computer hardware components, operating system concepts like processes and file systems, how system calls work, examples of common system calls, and different approaches to structuring operating systems.
System calls
This presentation discusses system calls and provides an overview of their key aspects:
System calls provide an interface between processes and the operating system. They allow programs to request services from the OS like reading/writing files. There are different methods of passing parameters to the OS, such as via registers, parameter blocks, or pushing to the stack. System calls fall into categories including process control, file management, device management, information maintenance, and communication. An example is given of how system calls would be used in a program to copy data between two files.
Windows 7 Architecture
History
Description of Windows Architecture
Layered Architecture
Portability
System Components
Processes & Threads
Kernel Scheduling
Object Manager
Virtual Memory Management
File System
Memory Management
LINUX Device Drivers
The Linux kernel acts as an interface between applications and hardware, managing system resources and providing access through system calls; it uses a monolithic design where all components run in the kernel thread for high performance but can be difficult to maintain, though Linux allows dynamic loading of modules. Device drivers interface hardware like keyboards, hard disks, and network devices with the operating system, and are implemented as loadable kernel modules that are compiled using special makefiles and registered with the kernel through system calls.
OPERATING SYSTEMS DESIGN AND IMPLEMENTATION
This document provides an overview of operating systems design and implementation. It discusses the basic functions of an operating system as an extended virtual machine and a resource manager. It describes the evolution of operating systems through four generations from the earliest batch systems using vacuum tubes and plugboards to today's personal computers. The document outlines key components of operating systems including processes, file systems, system calls, and virtual machines. It provides examples of early batch processing systems, multiprogramming, and the structure of system calls. Finally, it discusses different approaches to operating system structure such as layered systems, virtual machines, and the client-server model.
Input output in linux
Linux treats all devices as files that can be accessed in the same way. Devices are split into three categories: block devices, character devices, and network devices. Block devices represent storage devices and allow random access to fixed size blocks of data. Character devices like keyboards are accessed sequentially one character at a time. Network devices are accessed indirectly through opening a connection to the kernel's networking subsystem rather than direct data transfer.
Chapter 2 - Operating System Structures
The document summarizes key aspects of operating system structures including:
1) Operating systems provide services to users like user interfaces, program execution, I/O, file manipulation and resource allocation. They also ensure efficient system operation through accounting and protection.
2) System calls are the programming interface to OS services, accessed via APIs. Common APIs include Win32, POSIX, and Java.
3) Operating systems can have different structures like layered, modular, microkernel and virtual machine approaches. They are implemented through system programs, boot processes, and configuration for specific hardware.
OS - Ch2
The document summarizes key aspects of operating system structures including:
1) Operating systems provide services to users like user interfaces, program execution, I/O, file manipulation and resource allocation. They also ensure efficient system operation through accounting and protection.
2) System calls are the programming interface to OS services, accessed via APIs. Common APIs include Win32, POSIX, and Java.
3) Operating systems can have different structures like layered, modular, microkernel and virtual machine approaches. They are implemented through system programs, boot processes, and configuration for specific hardware.
linux kernel overview 2013
The document discusses the Linux kernel. It begins with background on Linux and defines a kernel. It describes the Linux kernel's monolithic architecture and discusses kernel modules. It provides details on module management, driver registration, and conflict resolution. It also provides an overview of key Linux kernel functions like process management, memory management, file systems, I/O management, and networking. It concludes with details on the Linux kernel development cycle.
What's hot (19)
Viewers also liked
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.
Ch22 system administration
This document provides an overview of electronic mail and email delivery systems. It discusses the basic roles of the Mail User Agent (MUA), Mail Delivery Agent (MDA), and Mail Transport Agent (MTA) in processing and delivering emails. It also covers common email protocols, the two primary models for email management ("every host" and "smart hub/thin client"), considerations for choosing an MTA like Sendmail, and key configuration files and variables used to customize Sendmail behavior.
Ch05 system administration
The document discusses various methods for installing operating systems. It covers hardware requirements, preparing for installation, different installation types including desktop, server and dual-boot installations. It also discusses Windows, Linux, Solaris and BSD installations and outlines unattended network installations using answer files.
Drink Water To Your Health
The document discusses the importance of drinking water for health. Some key points:
- Humans are 50-75% water and adults need 10-12 gallons daily.
- Water regulates body temperature, carries nutrients and oxygen, keeps tissues moist, and more.
- Loss of 10% water leads to weakness, 20% loss is life threatening. Most adults lose around 10 cups daily through urine, sweat, breathing, etc.
- Drinking fluids, food, and metabolism provide the necessary fluids to the body. Factors like heat, exercise, and illnesses can increase water needs.
Chapter13 -- ensuring integrity and availability
The document discusses ensuring integrity and availability in networks. It covers viruses, fault tolerance techniques like redundant components and UPS systems, data backup strategies, and disaster recovery plans. Integrity ensures the soundness of network programs, data, services and connections, while availability refers to consistent access. General guidelines include limiting administrator access and regularly monitoring performance.
Ch08 system administration
The document discusses disk drives and file systems. It provides an overview of disk components like platters, heads, and sectors. It explains disk geometry including cylinders, tracks, and how addressing schemes allow unique identification of each sector. Different disk interfaces like SCSI, IDE, and Fibre Channel are covered. The document also discusses disk formatting, partitioning, and techniques for optimizing performance like load balancing and RAID.
Chapter11 -- networking with tcpip and the internet
This chapter discusses TCP/IP network design including subnetting, CIDR, and NAT. It describes protocols for email delivery and access like SMTP, POP, and IMAP. It also explains using TCP/IP networks for voice transmission (VoIP) and provides details on TCP/IP utilities like netstat, nslookup, traceroute, and ifconfig that can be used for network discovery and troubleshooting.
Ch04 system administration
The document discusses the boot sequence of a computer system. It examines each step including the PROM monitor, boot block, secondary boot loader, the OS kernel, and start-up scripts. The administrator should understand this boot process as well as how to modify the boot sequence, select alternate devices, and properly shut down the system.
Ch18 system administration
Network file sharing allows files to be accessed over a network. It employs Remote Procedure Calls and requires setup of both server and client software. While convenient for users, it complicates administration and can introduce security issues if not configured properly. NFS and SMB are common network file sharing protocols, each with their own advantages and disadvantages.
Ch01
This document provides an introduction to system administration. It outlines the roles and responsibilities of a system administrator (sysadmin), which can vary depending on the size of the organization. Common duties of a sysadmin include installing and maintaining operating systems, software and security patches; managing user accounts, backups and network services; and troubleshooting and documenting system issues. The document also lists important skills for sysadmins, such as technical knowledge, problem solving abilities, customer service skills and abilities to delegate tasks and manage time.
Namaz ka tareeqa
1) Salat Tasbeeh is a four rakat prayer where in each posture of the rakat (standing, bowing, prostrating, sitting), the phrase "Subhan Allah-e-Wal Hamd-o-lillah-e-Wala-Ilaha -Ilallaho-Wallaho-Akbar" is uttered a specified number of times.
2) In each rakat, the phrase must be uttered 75 times total across the seven postures - with 15 times while standing after recitation, 10 times while bowing, 10 times in each prostration, and 10 times while sitting between prostrations.
3) The specified numbers of times the phrase
Ch20 system administration
The document discusses name resolution services including NIS, DNS, and how they work together. NIS is a local name service, while DNS is global and hierarchical. It describes the components and configuration of DNS, including root, top-level, and subordinate domains as well as master, slave and caching nameservers. The document then provides an example of the name resolution process between a client, local nameserver, and external domain.
Ramadan 2008
The document provides guidance on planning for Ramadan by outlining important areas to focus on such as salat, Quran recitation, zikr, dua, Umrah, Itikaf, financial obligations, family, dawah, health, and stopping bad habits. It emphasizes that failing to plan is planning to fail, and Satan tries to discourage planning or engaging in lesser good. Proper planning in these areas can help one get closer to Allah and maximize rewards during the holy month.
Ch21 system administration
This document provides an overview of key concepts related to web services including web clients (browsers), web servers, and security issues. It discusses how browsers make requests to servers and display pages using URLs. It also covers important client-side issues like security vulnerabilities from downloaded content, cookies, and privacy. On the server side, it recommends the Apache web server and discusses choosing, installing, and configuring a server as well as common modules to extend functionality.
Chapter14 -- networking security
This document summarizes security risks and mitigation techniques for computer networks. It discusses risks associated with people, transmission, hardware, protocols, software, and internet access. It also outlines the goals of an effective security policy and describes physical security, firewalls, proxy servers, remote access, network operating system security, encryption, and wireless security. Key risks include social engineering, unauthorized access, transmission interception, insecure protocols, denial-of-service attacks, and improper firewall/remote access configurations. The chapter recommends conducting security audits, restricting physical access, using firewalls/proxy servers for access control, enforcing secure authentication/access, and encrypting sensitive data and wireless transmissions.
Ch03
The document introduces fundamental system administration tools and practices, including navigating file trees, using the vi text editor, command line tools like grep and tar, and adopting good practices like avoiding wildcards as root. It also covers using pipes, window managers, email and web browsers to juggle multiple tasks as a system administrator.
Indiansoldiers
Indian soldiers who were wounded fighting in World War 1 on the Western Front were sent to England for treatment. Many towns on the south coast of England, including Brighton, Bournemouth, Brockenhurst and New Milton helped care for the large numbers of wounded Indian soldiers. It is estimated that over 64,000 Indian soldiers died or went missing and more than 65,000 were wounded by the end of the war.
Ch09 system administration
This document provides an overview of serial ports, including their terminology, capabilities, signals, configuration, and management. It discusses the RS-232 standard for serial communication and newer standards like RS-422 and RS-423. It also covers topics like cable types, modem connections, terminal and port monitoring software, and commands for configuring serial ports and managing terminals. Common problems are addressed along with their solutions.
Excel 2007 Unit P
This document discusses various aspects of writing and using Visual Basic for Applications (VBA) macros in Microsoft Excel 2007, including viewing and analyzing existing VBA code, writing your own code in the Visual Basic Editor, adding conditional statements, prompting users for input, debugging macros, creating main procedures to combine multiple macros, and running macros and main procedures.
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.
Viewers also liked (20)
Chapter11 -- networking with tcpip and the internet
Chapter11 -- networking with tcpip and the internet
Similar to Ch10 system administration
Successful Enterprise Single Sign-on: Addressing Deployment Challenges
Summarizes the problems users experience when managing too many passwords. It describes the various approaches available to organizations to reduce the password burden on users and to improve the security of their authentication systems.
System security by Amin Pathan
This document discusses system security and password management. It describes how passwords authenticate users and determine their privileges. For example, in UNIX systems the password is encrypted using DES algorithm with a salt value to prevent duplicates. The document also discusses strategies for strong password selection, such as user education, computer-generated passwords, and reactive/proactive password checking. It provides guidelines for components of a good password. Additionally, it covers operating system hardening techniques like disabling unneeded services/accounts, updating software, and removing unneeded programs/utilities. Specific steps are outlined for securing Windows and UNIX systems.
CHAPTER 7 Authentication and Authorization On
CHAPTER
7
Authentication and
Authorization
One of the most common ways to control access to computer systems is to
identify who is at the keyboard (and prove that identity), and then decide what
they are allowed to do. These twin controls, authentication and authorization,
respectively, ensure that authorized users get access to the appropriate
computing resources, while blocking access to unauthorized users.
Authentication is the means of verifying who a person (or process) is, while
authorization determines what they’re allowed to do. This should always be done
in accordance with the principle of least privilege—giving each person only the
amount of access they require to be effective in their job function, and no more.
Authentication
Authentication is the process by which people prove they are who they say they
are. It’s composed of two parts: a public statement of identity (usually in the form
of a username) combined with a private response to a challenge (such as
a password). The secret response to the authentication challenge can be based on
one or more factors—something you know (a secret word, number, or passphrase
for example), something you have (such as a smartcard, ID tag, or code
generator), or something you are (like a biometric factor like a fingerprint or
retinal print). A password by itself, which is a means of identifying yourself
through something only you should know (and today’s most common form of
challenge response), is an example of single-factor authentication. This is not
considered to be a strong authentication method, because a password can be
intercepted or stolen in a variety of ways—for example, passwords are frequently
written down or shared with others, they can be captured from the system or the
network, and they are often weak and easy to guess.
Imagine if you could only identify your friends by being handed a previously
agreed secret phrase on a piece of paper instead of by looking at them or hearing
their voice. How reliable would that be? This type of identification is often
portrayed in spy movies, where a secret agent uses a password to impersonate
someone the victim is supposed to meet but has never seen. This trick works
precisely because it is so fallible—the password is the only means of identifying
the individual. Passwords are just not a good way of authenticating someone.
Unfortunately, password-based authentication was the easiest type to implement
in the early days of computing, and the model has persisted to this day.
Other single-factor authentication methods are better than passwords. Tokens
and smart cards are better than passwords because they must be in the physical
possession of the user. Biometrics, which use a sensor or scanner to identify
unique features of individual body parts, are better than passwords because they
can’t be shared—the user must be present to log in. However, there are ways to
defeat these methods. Tokens and card ...
CSI-503 - 10. Security & Protection (Operating System)
The document discusses security and protection in operating systems. It defines security as a mechanism that analyzes users and permits authorized access to system resources through authentication and encryption. Protection deals with controlling access to system resources and determining which files a user can access. The document provides examples of how organizations implement security and protection measures to restrict access to information.
A Novel Passwordless Authentication Scheme for Smart Phones Using Elliptic Cu...
Today, a large number of people access internet through their smart phones to login to their bank accounts, social networking accounts and various other blogs. In such a scenario, user authentication has emerged as a major security issue in mobile internet. To date, password based authentication schemes have been extensively used to provide authentication and security. The password based authentication has always been cumbersome for the users because human memory is transient and remembering a large number of long and complicated passwords is impossible. Also, it is vulnerable to various kinds of attacks like brute force, rainbow table, dictionary, sniffing, shoulder surfing and so on. As the main contribution of this paper, a new passwordless authentication scheme for smart phones is presented which not only resolves all the weaknesses of password based schemes but also provide robust security. The proposed scheme relieves users from memorizing and storing long and complicated passwords. The proposed scheme uses ECDSA which is based on Elliptic Curve Cryptography (ECC). ECC has remarkable strength and efficiency advantages in terms of bandwidth, key sizes and computational overheads over other public key cryptosystems. It is therefore suitable for resource constraint devices like smart phone. Furthermore, the proposed scheme incorporate CAPTCHA which play a very important role in protecting the web resources from spamming and other malicious activities. To the best of our knowledge, until now no passwordless user authentication protocol based on ECC has been proposed for smart phones. Finally, the security and functionality analysis shows that compared with existing password based authentication schemes, the proposed scheme is more secure and efficient.
8 passwordsecurity
The document discusses password security, explaining authentication and authorization, how passwords are used to control access, the importance of strong password selection to prevent cracking, and provides guidelines for password policies and creating strong passwords to protect against attacks. It examines common authentication methods, why passwords should be complex and regularly changed, and tools that can crack passwords if they are weak.
Unit4 NMA working with user accounts WINDOWS SERVER 2008
Working with user accounts,modification,deletion and creating a group its policies and share and printer sharing over a network and windows server backup 2008
AUTHENTICATION MECHANISM ENHANCEMENT UTILISING SECURE REPOSITORY FOR PASSWORD...
In this paper the idea of an enhanced security authentication procedure is presented. This procedure prohibits the transmission of the user’s password over the network while still providing the same authentication service. To achieve that, Kerberos Protocol and a secure password repository are adopted, namely a smart card. The conditional access to a smart card system provides a secure place to keep credentials safe. Then, by referencing to them through identifiers, an authentication system may perform its scope without revealing the secrets at all. This elevates the trustworthiness of the mechanism while at the same time it achieves to reduce the overhead of the authentication systems due to the elaborate encryptions procedures.
Lecture 4
This document provides a history of operating system development and discusses various methods for user authentication. It describes how early systems had no OS and each user had exclusive access. Timesharing systems introduced multiprogramming which allowed interleaved access and context switching between users. Passwords became a common authentication method, storing hashed passwords with salts to prevent duplicates. However, passwords are limited and can be cracked through brute force attacks or using dictionaries. The document recommends techniques like longer randomized passwords and one-time passwords to improve security.
Introduccion a la seguridad Windows 7
This document provides an overview of Windows authentication concepts including:
- Authentication verifies a user or object's identity while authorization determines what resources they can access.
- Accounts identify principals like users and services and are assigned to security groups which grant permissions.
- Logons authenticate users and applications, with interactive logons initiated by Winlogon and application logons for services.
- Authorization uses security tokens containing group memberships and privileges to determine resource access.
Problems with Password Change Lockout Periods in Password Policies
One common component of Password Policies, Password Lockout Periods, can cause worse security issues then the problem it is looking to solve
E-LEARNING
This document provides a high-level summary of an e-learning system. It includes sections on introduction, general description, specific requirements, and data design. The system allows administrators to manage the website and students to access study materials. Key features include user registration, login/logout, password recovery, and feedback submission. Functional requirements are defined through use cases. The system will use a relational database with tables for users, study materials, and feedback. This provides an overview of the system's purpose, users, functionality and basic design.
Introduction to SAP Security
This document provides an overview of SAP security. It discusses key concepts like user master records, roles, profiles, and authorization objects which form the building blocks of SAP security. It also explains common terminologies and tools used in SAP security like user buffer, authorization errors, and security matrix. The document demonstrates how authorization checks work when executing a transaction in SAP and lists some standard SAP password controls. It introduces the Central User Administration feature and provides examples of common security tools in SAP.
International Journal of Engineering Research and Development
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
Petroleum and Mining Engineering,
Marine and Agriculture engineering,
Aerospace Engineering.
Centralized Self-service Password Reset: From the Web and Windows Desktop
For companies of all sizes, the task of supporting users can prove to be taxing on the IT staff, especially the Help Desk and Administrators. Most studies show the cost of pass-word resets can range from $25 to $75 per incident and make up around 30 percent or more of Help Desk calls. This provides ample reason and demand for password reset and recovery tools which empower the user. By allowing users to self-service their own ac-count and password management needs, organizations can effectively offer 24/7 access and maintain productivity.
Os lecture 6
The document discusses the structure of operating systems and the services they provide. It describes how operating systems provide 1) a user interface, 2) program execution, 3) I/O operations, 4) file system manipulation, 5) communications, 6) error detection, and 7) resource allocation. It also discusses how operating systems provide accounting, protection, and security services. The document uses an example of copying a file to illustrate how programs use system calls to request services from the operating system.
Graphical Password Authentication using Image Segmentation
1) The document proposes a new graphical password authentication system using image segmentation. It aims to improve upon traditional alphanumeric passwords which are difficult for users to remember and tend to be insecure.
2) The proposed system works by having a user select a sequence of grids from a segmented image during registration. On login, the user must select the grids in the same order to authenticate. This provides clues to help remember the password but makes it difficult to guess.
3) The document discusses limitations of alphanumeric passwords and how graphical passwords could address problems of memorability and security. Prior systems like PassPoints are analyzed, and image segmentation is proposed as an improved recall-based graphical password scheme.
An Enhanced Security System for Web Authentication
Web authentication has low security in these days. Todays, For Authentication purpose,
Textual passwords are commonly used; however, users do not follow their requirements. Users tend to
choose meaningful words from dictionaries, which make textual passwords easy tobreak and vulnerable
to dictionary or brute force attacks. Also, Textual passwords can be identified by 3rd
party software’s.
Many available graphicalpasswords have a password space that is less than or equal to the textual
passwordspace. Smart cards or tokens can be stolen.There are so many biometric authentications have
been proposed; however, users tend to resistusing biometrics because of their intrusiveness and the effect
on their privacy. Moreover,biometrics cannot be evoked.In this paper, we present and evaluate our
contribution,i.e., the OTP and 3-D password. A one-time password (OTP) is a password that isvalid for
only one login session or transaction. OTPs avoid a number of shortcomingsthat are associated with
traditional (static) passwords. The most important shortcoming that is addressed by OTPs is that, in
contrast to static passwords, they are not vulnerable to replay attacks. It means that a potential intruder
who manages to record an OTPthat was already used to log into a service or to conduct a transaction
will not be able toabuse it, since it will be no longer valid. The 3-D password is a multifactor
authenticationscheme. To be authenticated, we present a 3-D virtual environment where the
usernavigates and interacts with various objects. The sequence of actions and interactionstoward the
objects inside the 3-D environment constructs the user’s 3-D password.
Operating System & Application Security
Operating System, Application Security- Authentication (Username/ Password, User Card/ key, User attribute- fingerprint/eye retina/ pattern), One time Password (Random Numbers, Secret Key, Network Password), Program Threats (Torjan Horse, Trap Door, Logic Bomb, Virus). Computer Security Classification
An Alternative to Single Sign-On
This document discusses the challenges of single sign-on systems and proposes password synchronization as an alternative. Password synchronization allows users to maintain uniform passwords across multiple login accounts and systems by enabling simultaneous password changes. This makes password management easier for users and reduces helpdesk costs compared to single sign-on, which has challenges like being an attractive target for intruders, causing service unavailability if the password server is damaged, and being complex and expensive to install.
Similar to Ch10 system administration (20)
Successful Enterprise Single Sign-on: Addressing Deployment Challenges
Successful Enterprise Single Sign-on: Addressing Deployment Challenges
CSI-503 - 10. Security & Protection (Operating System)
CSI-503 - 10. Security & Protection (Operating System)
A Novel Passwordless Authentication Scheme for Smart Phones Using Elliptic Cu...
A Novel Passwordless Authentication Scheme for Smart Phones Using Elliptic Cu...
Unit4 NMA working with user accounts WINDOWS SERVER 2008
Unit4 NMA working with user accounts WINDOWS SERVER 2008
AUTHENTICATION MECHANISM ENHANCEMENT UTILISING SECURE REPOSITORY FOR PASSWORD...
AUTHENTICATION MECHANISM ENHANCEMENT UTILISING SECURE REPOSITORY FOR PASSWORD...
Problems with Password Change Lockout Periods in Password Policies
Problems with Password Change Lockout Periods in Password Policies
International Journal of Engineering Research and Development
International Journal of Engineering Research and Development
Centralized Self-service Password Reset: From the Web and Windows Desktop
Centralized Self-service Password Reset: From the Web and Windows Desktop
Graphical Password Authentication using Image Segmentation
Graphical Password Authentication using Image Segmentation
An Enhanced Security System for Web Authentication
An Enhanced Security System for Web Authentication
More from Raja Waseem Akhtar
The prophet's wives
The document discusses reasons why the Prophet Muhammad had multiple wives. It states that he had 12 wives total, with 10 being with him when he passed away. It argues that lust was not the reason, pointing out that he married his first wife Khadijah at age 25 and stayed with her alone for 25 years until her death when he was 52. It says the marriages were for political, social and religious reasons like spreading Islamic culture, strengthening bonds with companions, and having ties with other nations.
God is Great
This document takes the reader on a trip through scales of size from micro to macro, jumping distances by factors of 10. It starts at 1 meter and increases the scale up to 10 million light years, observing different objects that come into view like planets, galaxies, and nebulae. It then returns back down to the micro scale, decreasing distances by factors of 10 until it reaches the scale of femtometers, observing subatomic particles. The document emphasizes the constancy of natural laws across all scales and encourages contemplating humanity's place in the vast universe.
Aayat ul qursi
This document discusses the benefits of reciting Aayathul Qursi. It states that reciting it when leaving the house will result in 70,000 angels protecting from all sides. Reciting it 40 times daily at sunset earns the reward of 40 Hajj pilgrimages. Reciting it before bed will result in an angel guarding the person until morning. Reciting it after returning home and after ablution increases a person's rank with every word. Sharing it with others also provides reward from God.
2ªwwii how did it fought
World War II involved major battles in the European Theater between November 1942 and May 1945. Allied forces led by generals Montgomery, Clark, Alexander, Patton, Bradley, and Devers fought against Axis forces in campaigns across Western, Central, and Eastern areas of engagement. Through coordinated operations between multiple army groups consisting of airborne, armored, and infantry divisions, the Allies were ultimately able to defeat Nazi Germany.
Fun with EMC2
1) A liter of water contains enough mass to produce 9 x 1016 Joules of energy if converted entirely, which could power a 1 Watt lightbulb for around 3 billion years.
2) The sun produces its energy through nuclear fusion, where hydrogen nuclei fuse into helium. A little bit of mass is lost in this process, appearing as energy according to E=mc2.
3) Scientists are trying to create controlled nuclear fusion on Earth for a sustainable energy source, but it requires maintaining temperatures over 15 million degrees, which is technically challenging.
Discover the discovery
This document provides a high-level overview of the shuttle processing steps before flight, including:
1) The external tank arrives by barge and is moved to the Vertical Assembly Building (VAB) for preparation.
2) Solid rocket boosters and shuttle engines are attached to the external tank in the VAB.
3) The shuttle is then lifted and attached to the external tank.
4) The payload is prepared separately in the Payload Preparation Room and then transported to the launch pad for insertion into the shuttle.
Solaris servers sec
This document provides guidance on securing Solaris servers through hardening and configuration best practices. It recommends removing unnecessary software and services, enabling detailed system logging, installing the latest security patches regularly, and configuring services like sendmail securely based on checklists from SANS and CIS. Key steps include a minimal OS installation, removing unneeded packages and services, setting secure permissions and logging levels, and installing tools like Tripwire and SSH.
The OSI - seven layers
The document discusses the benefits of meditation for reducing stress and anxiety. Regular meditation practice can help calm the mind and body by lowering heart rate and blood pressure. Studies have shown that meditating for just 10-20 minutes per day can have significant positive impacts on both mental and physical health.
Chapter16 - the internet and its tools
The document provides a history of the internet and explains how it works and some common tools used on it. It began as a US military network called ARPANET and later expanded. The Domain Name System translates website names to IP addresses. Web browsers allow viewing web pages while email and listservs allow communication. Search engines and portals help users find information and HTML defines webpage formatting.
Chapter15 -- implementing and managing networks
1. Project management is important for network implementation projects and involves determining feasibility, assessing needs, setting goals, planning tasks and timelines, managing communication, and contingency planning.
2. Network management includes monitoring performance and faults, tracking assets, and regularly maintaining and upgrading both hardware and software.
3. Careful planning is required for any network changes, including software updates, client and server upgrades, and adding or replacing physical equipment. Changes must be thoroughly tested and plans should allow for reverting changes if needed.
Chapter12 -- troubleshooting networking problems
The document discusses a methodology for effectively troubleshooting networking problems which includes identifying symptoms, determining the scope of the problem, establishing what has changed, selecting the most probable cause, verifying physical and logical connectivity, recognizing potential solution effects, implementing and testing a solution, and documenting the problem and resolution. It also discusses various software and hardware tools that can be used to diagnose networking issues, including cable testers, network monitors, protocol analyzers, and wireless network testing tools.
Chapter10 -- netware-based networking
The document discusses NetWare, a network operating system developed by Novell. It provides an overview of NetWare's history and versions. The key advantages of NetWare include centralized management, support for multiple protocols, and integration with other network operating systems. The document also describes planning and installing a NetWare server, including hardware requirements, the installation process, establishing user accounts and groups, and providing client access and interoperability with other operating systems.
Chapter09 -- networking with unix and linux
This chapter discusses the history and varieties of UNIX and Linux operating systems. It describes how to install Linux, configure users and permissions, and interconnect Linux with other network operating systems using tools like Samba, WINE, VMware and Telnet. The chapter also provides examples of basic Linux commands and how to set up a Linux server with the required hardware specifications.
Chapter08 -- network operating systems and windows server 2003-based networking
This chapter discusses network operating systems and Windows Server 2003. It covers the functions of a network OS like managing resources and users. Windows Server 2003 editions are examined along with installation requirements. Features like Active Directory, file systems, and integration with other OSs are described. The chapter concludes with instructions for a basic Windows Server 2003 installation and configuration of users and groups.
Chapter07 -- wa ns and remote connectivity
The document discusses wide area networks (WANs) and remote connectivity. It defines WANs and their essential components. It describes various WAN topologies including bus, ring, star, mesh and tiered. It also discusses several WAN transmission methods like PSTN, ISDN, T-carriers, DSL, cable, and SONET. The document concludes with an overview of remote connectivity options like dial-up networking, remote control, terminal services, web portals and virtual private networks.
Chapter06 -- topologies and access methods
This document provides an overview of network topologies and access methods. It describes physical topologies like bus, ring, and star, as well as hybrid topologies like star-wired ring and star-wired bus. It also covers backbone structures, switching methods, Ethernet, Token Ring, FDDI, ATM, and wireless networking standards like 802.11a, 802.11b, and 802.11g. Key aspects like frames, association, and quality of service are discussed for different network types.
Chapter05 -- networking hardware
This document provides an overview of various networking hardware components, including their functions and how they operate at different layers of the OSI model. It describes network adapters, repeaters, hubs, bridges, switches, routers, and gateways. It covers topics such as installing and configuring network adapters, choosing the right adapter, VLANs, and common routing protocols.
Chapter04 -- network protocols
The document summarizes key network protocols including TCP/IP, IPX/SPX, NetBIOS, and AppleTalk. It describes the layers of the TCP/IP protocol suite and how they correspond to the OSI model. It also discusses important TCP/IP protocols like TCP, IP, UDP, ICMP, and ARP as well as addressing schemes, dynamic host configuration protocol (DHCP), and port numbers.
More from Raja Waseem Akhtar (20)
Chapter08 -- network operating systems and windows server 2003-based networking
Chapter08 -- network operating systems and windows server 2003-based networking
Recently uploaded
Skybuffer AI: Advanced Conversational and Generative AI Solution on SAP Busin...
Skybuffer AI, built on the robust SAP Business Technology Platform (SAP BTP), is the latest and most advanced version of our AI development, reaffirming our commitment to delivering top-tier AI solutions. Skybuffer AI harnesses all the innovative capabilities of the SAP BTP in the AI domain, from Conversational AI to cutting-edge Generative AI and Retrieval-Augmented Generation (RAG). It also helps SAP customers safeguard their investments into SAP Conversational AI and ensure a seamless, one-click transition to SAP Business AI.
With Skybuffer AI, various AI models can be integrated into a single communication channel such as Microsoft Teams. This integration empowers business users with insights drawn from SAP backend systems, enterprise documents, and the expansive knowledge of Generative AI. And the best part of it is that it is all managed through our intuitive no-code Action Server interface, requiring no extensive coding knowledge and making the advanced AI accessible to more users.
Main news related to the CCS TSI 2023 (2023/1695)
An English 🇬🇧 translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers.
The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
Trusted Execution Environment for Decentralized Process Mining
Presentation of the paper "Trusted Execution Environment for Decentralized Process Mining" given during the CAiSE 2024 Conference in Cyprus on June 7, 2024.
5th LF Energy Power Grid Model Meet-up Slides
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
dbms calicut university B. sc Cs 4th sem.pdf
Its a seminar ppt on database management system using sql
Columbus Data & Analytics Wednesdays - June 2024
Columbus Data & Analytics Wednesdays, June 2024 with Maria Copot 20
HCL Notes and Domino License Cost Reduction in the World of DLAU
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
Energy Efficient Video Encoding for Cloud and Edge Computing Instances
Energy Efficient Video Encoding for Cloud and Edge Computing Instances
JavaLand 2024: Application Development Green Masterplan
My presentation slides I used at JavaLand 2024
Introduction of Cybersecurity with OSS at Code Europe 2024
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
leewayhertz.com-AI in predictive maintenance Use cases technologies benefits ...
Predictive maintenance is a proactive approach that anticipates equipment failures before they happen. At the forefront of this innovative strategy is Artificial Intelligence (AI), which brings unprecedented precision and efficiency. AI in predictive maintenance is transforming industries by reducing downtime, minimizing costs, and enhancing productivity.
Driving Business Innovation: Latest Generative AI Advancements & Success Story
Are you ready to revolutionize how you handle data? Join us for a webinar where we’ll bring you up to speed with the latest advancements in Generative AI technology and discover how leveraging FME with tools from giants like Google Gemini, Amazon, and Microsoft OpenAI can supercharge your workflow efficiency.
During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
Ollama Use Case: Learn how Scenario Specialist Dmitri Bagh has utilized Ollama within FME to input data, create custom models, and enhance security protocols. This segment will include demos to illustrate the full capabilities of FME in AI-driven processes.
Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
Fueling AI with Great Data with Airbyte Webinar
This talk will focus on how to collect data from a variety of sources, leveraging this data for RAG and other GenAI use cases, and finally charting your course to productionalization.
Azure API Management to expose backend services securely
How to use Azure API Management to expose backend service securely
Programming Foundation Models with DSPy - Meetup Slides
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
Digital Banking in the Cloud: How Citizens Bank Unlocked Their Mainframe
Inconsistent user experience and siloed data, high costs, and changing customer expectations – Citizens Bank was experiencing these challenges while it was attempting to deliver a superior digital banking experience for its clients. Its core banking applications run on the mainframe and Citizens was using legacy utilities to get the critical mainframe data to feed customer-facing channels, like call centers, web, and mobile. Ultimately, this led to higher operating costs (MIPS), delayed response times, and longer time to market.
Ever-changing customer expectations demand more modern digital experiences, and the bank needed to find a solution that could provide real-time data to its customer channels with low latency and operating costs. Join this session to learn how Citizens is leveraging Precisely to replicate mainframe data to its customer channels and deliver on their “modern digital bank” experiences.
Generating privacy-protected synthetic data using Secludy and Milvus
During this demo, the founders of Secludy will demonstrate how their system utilizes Milvus to store and manipulate embeddings for generating privacy-protected synthetic data. Their approach not only maintains the confidentiality of the original data but also enhances the utility and scalability of LLMs under privacy constraints. Attendees, including machine learning engineers, data scientists, and data managers, will witness first-hand how Secludy's integration with Milvus empowers organizations to harness the power of LLMs securely and efficiently.
June Patch Tuesday
Ivanti’s Patch Tuesday breakdown goes beyond patching your applications and brings you the intelligence and guidance needed to prioritize where to focus your attention first. Catch early analysis on our Ivanti blog, then join industry expert Chris Goettl for the Patch Tuesday Webinar Event. There we’ll do a deep dive into each of the bulletins and give guidance on the risks associated with the newly-identified vulnerabilities.
GNSS spoofing via SDR (Criptored Talks 2024)
In the realm of cybersecurity, offensive security practices act as a critical shield. By simulating real-world attacks in a controlled environment, these techniques expose vulnerabilities before malicious actors can exploit them. This proactive approach allows manufacturers to identify and fix weaknesses, significantly enhancing system security.
This presentation delves into the development of a system designed to mimic Galileo's Open Service signal using software-defined radio (SDR) technology. We'll begin with a foundational overview of both Global Navigation Satellite Systems (GNSS) and the intricacies of digital signal processing.
The presentation culminates in a live demonstration. We'll showcase the manipulation of Galileo's Open Service pilot signal, simulating an attack on various software and hardware systems. This practical demonstration serves to highlight the potential consequences of unaddressed vulnerabilities, emphasizing the importance of offensive security practices in safeguarding critical infrastructure.
Recently uploaded (20)
Skybuffer AI: Advanced Conversational and Generative AI Solution on SAP Busin...
Skybuffer AI: Advanced Conversational and Generative AI Solution on SAP Busin...
Trusted Execution Environment for Decentralized Process Mining
Trusted Execution Environment for Decentralized Process Mining
HCL Notes and Domino License Cost Reduction in the World of DLAU
HCL Notes and Domino License Cost Reduction in the World of DLAU
Energy Efficient Video Encoding for Cloud and Edge Computing Instances
Energy Efficient Video Encoding for Cloud and Edge Computing Instances
JavaLand 2024: Application Development Green Masterplan
JavaLand 2024: Application Development Green Masterplan
Introduction of Cybersecurity with OSS at Code Europe 2024
Introduction of Cybersecurity with OSS at Code Europe 2024
leewayhertz.com-AI in predictive maintenance Use cases technologies benefits ...
leewayhertz.com-AI in predictive maintenance Use cases technologies benefits ...
Driving Business Innovation: Latest Generative AI Advancements & Success Story
Driving Business Innovation: Latest Generative AI Advancements & Success Story
Azure API Management to expose backend services securely
Azure API Management to expose backend services securely
Programming Foundation Models with DSPy - Meetup Slides
Programming Foundation Models with DSPy - Meetup Slides
Overcoming the PLG Trap: Lessons from Canva's Head of Sales & Head of EMEA Da...
Overcoming the PLG Trap: Lessons from Canva's Head of Sales & Head of EMEA Da...
Digital Banking in the Cloud: How Citizens Bank Unlocked Their Mainframe
Digital Banking in the Cloud: How Citizens Bank Unlocked Their Mainframe
Generating privacy-protected synthetic data using Secludy and Milvus
Generating privacy-protected synthetic data using Secludy and Milvus
Ch10 system administration
- 1. User Accounts Chapter 10