Few days ago i go through a threat in which peoples were asking about How they can block websites/or WebPages by using DNS or ISA , So according to their needs and their question we are finally just come to write the solution for this threat . Before telling you the solution we just strongly recommend you that you use ISA for blocking website or webpages , as blocking a website through DNS is not very effective one . So lets follow these Steps

1- First of all lets assume that you have XP so you just need to Use host file in order to block websites . So open the below path for retrieving a Host File

C:WindowsSystem32Driversetchosts

2- Once you have found the hosts file, right click it and select Properties. Uncheck the “Read-Only” attribute (if checked). Click OK.

3- Now what you need to just make a Double click the ‘Hosts’ file and select “Notepad” from the list of programs to open it with.

4- Once you have the hosts file open in Notepad, you will see an entry such as:

Code:

# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host

127.0.0.1       localhost

5- Now what you need to do in this step just block a certain web page from loading, add the following:

127.0.0.1 www.webpage.com

Your Hosts file will now look like this:

127.0.0.1 localhost

127.0.0.1 www.webpage.com

Similarly Add as many web addresses as you like in the same fashion.

6-Once you are finished, go up to ‘File’ and click ‘Save’.

The web pages listed in your ‘Hosts’ file should be blocked from access. It may be necessary for you to reboot your computer for these changes to take effect .