Ahsun Taquveem Chohan

The openness of the Internet has dramatically transformed global communications, making it easy for people around the world to exchange information. But the very same openness also creates an enormous problem. Anyone can access the network, yet not everyone has good intentions.
Some engage in malicious mischief by unleashing destructive software programs, while others view hacking computer networks as sport. Then there are people with criminal goals in mind.
To avoid becoming a victim of misguided pranksters or cyber-crime, take the time to examine the security of your personal data. Here are our recommendations, along with links to more detailed information:
1. Use anti-virus software:
Viruses spread rapidly and can damage or destroy your computer. New ones appear almost daily. It’s critical that you install and update anti-virus software regularly. Use the program to scan all the files on your system once a week, deleting the infected ones. I use avg free edition, you can get it from http://free.avg.com
2. Beware of e-mail attachments:

A virus can hide in an attachment. Opening it will unleash the virus. Don’t open an attachment from anyone you don’t know. Even if you do know the sender, an infected attachment may have been surreptitiously sent from an infected machine. The safest thing to do is to scan the attachment with anti-virus software before you open it.
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I found that many people were thinking regarding IIS 7.0 installation on XP. To answer this question I did few searches and found out that IIS 7.0 is only for Vista+ or Windows Server 2008+ .

Here is the source

http://forums.iis.net/p/1156627/1899483.aspx

So answer to above question is , IIS 7.0 can not be installed on XP

If you want to use IIS 7.0 on XP then you can do it by downloading latest virtual server build which is available for free on the internet and then install vista on it.

Then install IIS on vista and enjoy IIS 7.0 but make sure your computer can run XP and VISTA, both at the same time.

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There were two errors which I faced

1. HTTP Error 500.19 – Internal Server Error  0×80070021
2. HTTP Error 404.3 – Not Found  0×80070032

How to remove HTTP Error 500.19 – Internal Server Error?

Error Code 0×80070021

This error occurs when IIS is not installed completely i.e. You’ve install IIS but asp.net isn’t installed and by default asp.net doesn’t install automatically so you have to install asp.net.

I’ve windows vista so I went to control panel > Program and Features > Turn Windows features on or off

There I selected IIS and asp.net as shown below

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This tutorial require 2 PHP files and 1 table of mySQL database.

1. index.php this file is the Login and Logout file.
2. main.php this file is the target when login is O.K.
3. Database “tutorial” and table “admin” with 3 fields: id(auto_increment), username(varchar, 50), password(varchar, 32).
   * The “password” field is design for md5() password for more sucurity.Then put a record into this table. In this tutorial, put a record with name “admin” and password “81dc9bdb52d04dc20036dbd8313ed055“. This password was encrypted by md5() function from the real password “1234“.

   * When you test this script you must to put the real password (1234) in “password” box.

• index.php

The mainly file for do 3 things.

• Login form. Including 2 fields “username” and “password” and submit button “Login”.
• Login authorize program. Do authorize check after you submit form, if passed in username and password, this page will re-direct to main.php. If not, show the invalid user or password message.
• Logout. Clear the login session when come back or refresh this page.

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