Sunday 31 August 2014

How To Remove Your Windows 7 Password.

How To Remove Your Windows 7 Password

  1. Click on Start and then Control Panel.
     
  2. Click on the User Accounts and Family Safety link.

    Note: If you're viewing the Large icons or Small icons view of Control Panel, you won't see this link. Simply click on the User Accounts icon and proceed to Step 4.
     
  3. Click on the User Accounts link.
     
  4. In the Make changes to your user account area of the User Accounts window, click the Remove your password link.
     
  5. In the text box on the next screen, enter your current Windows 7 password.
     
  6. Click the Remove Password button to confirm that you'd like to remove your Windows 7 password.
     
  7. You can now close the User Accounts window.
     
  8. Now that your Windows 7 account password has been deleted, you will no longer need to log on when your computer starts.

    Your computer should now boot all the way to the Windows 7 desktop.

Saturday 30 August 2014

How to Enable & Disable Administrator Account in Windows.

1. Enable Built-in Administrator Account :

First you’ll need to open a command prompt in administrator mode by right-clicking and choosing
“Run as administrator” (or use the Ctrl+Shift+Enter shortcut from the search box).

image

If you are in Windows 8.x you can right-click on the Start button and choose to open a command
prompt that way.



Now type the following command:

net user administrator /active:yes

image

You should see a message that the command completed successfully. Log out, and you’ll now see the Administrator account as a choice. (Note that the screenshots are from Vista, but this works on
Windows 7 and Windows 8)

image

You’ll note that there’s no password for this account, so if you want to leave it enabled you should change the password.

2. Disable Built-in Administrator Account :

Make sure you are logged on as your regular user account, and then open an administrator mode command prompt as above. Type the following command:

net user administrator /active:no

image

The administrator account will now be disabled, and shouldn’t show up on the login screen anymore.

Saturday 23 August 2014

Basic Concept Of INTERNET, INTRANET, EXTRANET and VPN Connections.


Lesson Objective

1.1: Understand the concepts of the Internet, intranet, and extranet. This objective may include but is not limited to: VPN, security zones, firewalls.


Content

1.      The Internet has been called the “Information Superhighway.” Define the Internet and discuss why you would agree or disagree with this alternative label for the Internet.
Sample answer:
Internet:
A worldwide computer network that allows people to communicate and exchange information. The Internet is not owned by any particular company or person.
Most students would probably agree with the label Information Superhighway, citing such things as the global/international reach of the Internet, the high-speed connections of the Internet’s backbone
.

2.      The term extranet was coined by Mark Andreesen, a key developer of the early Web browser Mosaic, in 1996. He was actually criticized by Network World . The editorial stated that "... extranet is just a piece of marketing-speak gobbledygook that some people with too much time on their keyboards and a lack of inspiration are using" and ended with the statement, "an extranet by any other name is still an intranet."
Define an intranet and an extranet. Discuss your view of this editorial: do you think a single term should be used or are both terms necessary?

Sample answer:
Intranet:
A private network based on Internet protocols such as TCP/IP that is strictly internal to the organization and is not connected to the Internet directly. It is designed for information management within a company or organization, and includes such services as specialized applications, document distribution, software distribution, access to databases, and training.
Extranet: An extension of a corporate intranet using World Wide Web technology to facilitate communication with the corporation’s suppliers, customers, and business partners. An extranet allows limited access to a company’s intranet in order to enhance the speed and efficiency of their business relationship.
Yes, both terms are necessary—if we take net to mean network then intranet means internal network and extranet means external network, which makes it easier to understand how that type of network is being used.
Networking can be a complicated subject, so when you can capture the meaning of something in a single word it helps the public grasp a concept in a simple way. Yes, it can be a catchy marketing tool, but if it’s useful it will continue to be used over time. Intranet and extranet have become useful words such that they are now part of the networking lexicon.

3.      Provide a brief overview of each of the four basic features common to all VPN connections.
Sample answer:
The four basic features common to all VPN connections are:
Authentication:
The process of assuring the person who is accessing the VPN is really the person who is authorized to use the system.
Authorization:
The capability of limiting access to only authorized users to the
VPN.
Confidentiality: The capability of preventing anyone else from reading the data outside of the VPN.
Data integrity:
The process of ensuring the data that
leaves the source and arrives at the destination has not been tampered with while passing through the VPN.

4.      A company wants to connect all employees’ computers so they can share information without accessing the Internet—what type of network should they implement?
Sample answer:
An intranet would be the best network for this company.

Friday 22 August 2014

Networking Basic Terms.

Essential Vocabulary Regarding Networking:

Internet—a public worldwide computer network that anyone can access and use; allows people to communicate and exchange information.

intranet—a computer network; includes some of the same technologies as the Internet, but is strictly internal and confidential to the organization and is not connected to the Internet directly.

extranet—an extension of a corporate intranet and some combination of public and private networks to facilitate communication with the corporation’s suppliers, customers, and associates.

firewalls—a computer system or network firewall designed to permit authorized communications while blocking unauthorized access.

security zone—business/organization's need for physical and logical boundaries for accessing, controlling, and securing information throughout an organization's network.

virtual private network (VPN)—an independent network created with specialized software over a public network such as the Internet that allows secure communication on the private network.