Intelligentedu Best New Free Computer IT Training Tutorial Resources

Asynchronous JavaScript and XML (Ajax), has become the most popular new Web development technology. This is the first of a new two-part "Developing PHP the Ajax way" series (2nd part is not posted yet). In this Ajax tutorial and coding demonstation, you'll develop an online Web photo album application using PHP and the Simple Ajax Toolkit (Sajax). It starts be coding a simple photo album app using the usual method of PHP programming, to which Sajax is then applied and used to create it into an active Web application.

This tutorial article teaches the reader how to develop a simple photo album using two methods: a traditional Web application and a Sajax-powered application. The PHP album application reads the contents of a directory, displaying a thumbnail table to the user. When the user selects a thumbnail, the image expands to full size. Because a traditional application is being coded, every click generates a new HTTP request, and parameters are sent within the URL.

Developing PHP the Ajax Way, Part 1: Getting Started
A simple photo album


Here are some more resources from IBM with which you can learn more about how to use PHP, Ajax, and related web development technologies:

• PHP can be installed with built-in GD support. GD can be used, for example, to generate photo thumbnails. For more information, read the developerWorks article "Create graphics the smart way with PHP."
  
  
• Read the five-part "Mastering Ajax" series on developerWorks for a comprehensive overview of Ajax.
  
  
• Start with the "Considering Ajax" series to learn what developers need to know before using Ajax techniques when creating a Web site.
  
  
• If you aren't familiar with Ajax or Sajax, read "Using Ajax with PHP and Sajax."
  
  
• Be sure to check out "Reading and writing the XML DOM with PHP."

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The Computer Technology Documentation Project hosts the online version of four volumes of Agustin Velasco's Series about Linux. Agustin has generously made this four volume book, with over 200 pages of Linux documentation, freely available to the public through this site. The book is centered on Mandrake Linux, however, the content is worthwhile for all Linux versions. The book provides many screen shots that assist the reader to follow its step-by-step tutorials.

Agustin's Linux Manual - Vol. 1

1. Installation
2. Choosing a Linux Distribution
3. Partition types
4. Fdisk
5. Understanding Mount Point /mnt
6. Linux File Structure
7. Creating a boot disk
8. Welcome to Linux Installation
9. Installation mode
10. Partitioning
11. Creating partitions with Druid
12. Creating partitions manually
13. Formatting Partitions
14. Individual packages selection
15. The root account
16. Network configuration
17. The time zone
18. Configuring Services
19. Configuring X
20. Installing Mandrake 9.1 & 9.2
21. Installation Class
22. The Drake X Partitioning
23. Package Selection
24. Configuring X
25. The Internet
26. Creating a new user
27. Getting online
28. Configuring the connection (Dial UP)
29. High Speed Internet
30. DSL Modems and Cable modems
31. Connecting DSL as DHCP
32. Setting up a Plain Cable Modem (DOCSIS)
33. Connecting an ISDN
34. Using Routers
35. Login Protocols
36. PPPoE
37. WAN IP Address
38. Commercial Configuration
39. Troubleshooting

Agustin's Linux Manual - Vol. 2

1. Administration
2. Terminals
3. Command Basics
4. Root Directory
5. Executing Commands
6. File specs
7. File Permission
8. How permissions are assigned
9. Change ownership chown
10. Running multiple commands
11. Killing Processes
12. Bash configuration files
13. VI Editor
14. Creating path environment
15. Midnight Commander
16. Linuxconf Utility
17. Networking
18. Domain Name Service DNS
19. Router and Gateway
20. Adding Users
21. User Accounts
22. Managing Groups
23. Mounting File System
24. NFS Mounts
25. Disk Quotas
26. Run levels
27. Linuxconf Control
28. Mandrake Control Center
29. Creating a Boot Disk
30. Switching Boot Mode
31. Hardware Configurations
32. Printer Configuration
33. Installing Printers
34. Samba Printer
35. Managing services
36. Managing Users
37. Program Scheduler
38. Software Management
39. Installing CUPS

Agustin's Linux Manual - Vol. 3

1. Multimedia
2. Default Audio Setting
3. Audio Application
4. The Play Directory
5. The Equalizer
6. Options Sub-menu
7. Movies & DVDs
8. Starting Xine
9. Video Conferencing
10. GnomeMeeting's Main Window
11. The Desktop
12. Office
13. Networking
14. Multimedia Submenu
15. Web Browsers
16. Installing New Hardware
17. Loading Modules for Hardware
18. Introduction to IDEs
19. Tweaking the Hard Drive
20. Setting (U) DMA
21. Installing a CD/RW
22. Floppy Disk, Zip Drives
23. Installing USB Devices
24. Fire wire IEEE 1394
25. Using the CD-Writer

Agustin's Linux Manual - Vol. 4

1. IP Addresses Networks and Subnets
2. Network Classes
3. IP Address in Decimal Notation
4. Sub-netting
5. Designing Subnets
6. Allocating Subnets
7. Defining Host Addresses
8. Variable Length Subnet Mask
9. Routing Protocols
10. Classless Internet Domain Routing
11. Servers - Chapter 9
12. Apache Web Server
13. Configuring Apache
14. Uploading Web Pages
15. Apache Overview
16. MIMEMagic
17. DNS Servers
18. Welcome to Webmin
19. Creating the Master Domain
20. Adding the Reverse Zone
21. Querying the DNS server
22. Adding Virtual Domain to DNS Server
23. Reverse Zone for Virtual Zone
24. Binding IP Address for Virtual Domain
25. Virtual Web Hosting
26. DNS Security Options
27. FTP Server
28. Securing the FTP Server
29. Email Server
30. Postfix Configuration
31. Dealing with Identical Users
32. Configuring Email Clients
33. Configuring Outlook
34. Samba Server
35. Configuring SAMBA Server
36. The smb.conf File
37. smb.conf Analysis
38. Adding Users to Samba

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Python, the open source scripting language, has grown tremendously popular in the last five years. Python boasts a sophisticated object model that wise developers can exploit in ways that Java, C++, and C# developers can only dream of. These two tutorial articles describe and teach the internals of coding in Python using some of its advances and cutting-edge features.


Dig Deep into Python Internals - Part 1

This tutorial article is the first in a two-part series that digs deep to explore the fascinating new-style Python object model, which was introduced in Python 2.2 and improved in 2.3 and 2.4. The object model and type system are very dynamic and allow quite a few interesting tricks. This tutorial describes the object, model, and type system; explores various entities; explains the life cycle of an object; and introduces some of the ways to modify and customize almost everything you thought immutable at runtime.


Dig Deep into Python Internals - Part 2

In this tutorial article the author, Gigi Sayfan, contrasts meta-classes with decorators, explores the Python execution model and explains how to examine stack frames at runtime. Finally, he demonstrates how to augment the Python language itself using these techniques. A private access-checking feature that can be enforced at runtime is introduced to accomplish this.

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This free book, The .NET Developer's Guide to Windows Security, was written for the many thousands of people involved in designing and writing software for the Microsoft .NET platform. It is chock-full of tips and insights about user-based security. The format of this book consists of 75 concise tidbits of helpful reference information. The “what is” items focus on explaining concepts, and the “how to” items focus on helping you perform a common task. Code samples can be downloaded here.

The .NET Developer's Guide to Windows Security


Table of Contents

Preface

Acknowledgements


Part 1: The Big Picture

Item 1: What is secure code?

Item 2: What is a countermeasure?

Item 3: What is threat modeling?

Item 4: What is the principle of least privilege?

Item 5: What is the principle of defense in depth?

Item 6: What is authentication?

Item 7: What is a luring attack?

Item 8: What is a non privileged user?

Item 9: How to develop code as a non admin

Item 10: How to enable auditing

Item 11: How to audit access to files

Part 2: Security Context

Item 12: What is a security principal?

Item 13: What is a SID?

Item 14: How to program with SIDs

Item 15: What is security context?

Item 16: What is a token?

Item 17: What is a logon session?

Item 18: What is a window station?

Item 19: What is a user profile?

Item 20: What is a group?

Item 21: What is a privilege?

Item 22: How to use a privilege

Item 23: How to grant or revoke privileges via security policy

Item 24: What is WindowsIdentity and WindowsPrincipal?

Item 25: How to create a WindowsPrincipal given a token

Item 26: How to get a token for a user

Item 27: What is a daemon?

Item 28: How to choose an identity for a daemon

Item 29: How to display a user interface from a daemon

Item 30: How to run a program as another user

Item 31: What is impersonation?

Item 32: How to impersonate a user given her token

Item 33: What is Thread.CurrentPrincipal?

Item 34: How to track client identity using Thread.CurrentPrincipal

Item 35: What is a null session?

Item 36: What is a guest logon?

Item 37: How to deal with unauthenticated clients

Part 3: Access Control

Item 38: What is role based security?

Item 39: What is ACL based security?

Item 40: What is discretionary access control?

Item 41: What is ownership?

Item 42: What is a security descriptor?

Item 43: What is an access control list?

Item 44: What is a permission?

Item 45: What is ACL inheritance?

Item 46: How to take ownership of an object

Item 47: How to program ACLs

Item 48: How to persist a security descriptor

Item 49: What is Authorization Manager?

Part 4: COM(+)

Item 50: What is the COM authentication level?

Item 51: What is the COM impersonation level?

Item 52: What is CoInitializeSecurity?

Item 53: How to configure security for a COM client

Item 54: How to configure the authentication and impersonation level for a COM app

Item 55: How to configure the authentication and impersonation level for an ASP.NET app

Item 56: How to implement role based security for a managed COM app

Item 57: How to configure process identity for a COM server app

Part 5: Network Security

Item 58: What is CIA?

Item 59: What is Kerberos?

Item 60: What is a service principal name SPN?

Item 61: How to use service principal names

Item 62: What is delegation?

Item 63: What is protocol transition?

Item 64: How to configure delegation via security policy

Item 65: What is SSPI?

Item 66: How to add CIA to a socket based app using SSPI

Item 67: How to add CIA to .NET Remoting

Item 68: What is IPSEC?

Item 69: How to use IPSEC to protect your network

Part 6: Misc

Item 70: How to store secrets on a machine

Item 71: How to prompt for a password

Item 72: How to programmatically lock the console

Item 73: How to programatically log off or reboot the machine

Item 74: What is group policy?

Item 75: How to deploy software securely via group policy

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This free online book, Sams Teach Yourself Visual Studio .NET in 21 Days, will help developers that are new to application development and experienced developers understand how to use the .NET Framework and Visual Studio .NET to rapidly develop any type of computer application. By going through these lessons, you'll learn about the key components that make up Visual Studio .NET and the .NET Framework. This book will teach you how to start writing .Net (dotNet) applications immediately. Throughout the book, all the code examples are in both Visual Basic .NET and C# (C Sharp), so if you have a preference for one language, you can implement any of the code immediately.

Sams Teach Yourself Visual Studio .NET 2003 in 21 Days


Table of Contents

• Acknowledgments
  
• We Want to Hear from You
  
• Introduction
  
• Week 1: At a Glance
  
• Day 1. Introduction to the Microsoft .NET Framework
• What Is .NET?
• Windows of the Past
• The Common Language Runtime
• Understanding the Common Language Specification
• Understanding the Common Type System
• Handling Memory and Garbage
• The .NET Framework Class Library
• What about C++?
• .NET Servers and the Future of .NET
• Summary
• Q&A
• Quiz
• Exercises
  
• Day 2. Introduction to Visual Studio .NET
• Introducing the Start Page
• Using Dynamic Help
• The New Projects Dialog
• Exploring the Visual Studio .NET IDE
• Using the Project Menu
• Using the Build Menu
• Managing Code Windows and Designers
• Getting the Right Toolbars
• Customizing Your Environment
• Summary
• Q&A
• Quiz
• Exercises
  
• Day 3. Writing Windows Forms Applications
• Hello .NET!