In this post we will see how to edit hosts file (Eg. windows hosts file) to Block unwanted Sites, ads, banners, cookies etc. Hosts file is used to map hostnames to IP addresses.
The hosts file is used by the operating system and it assists the OS in addressing network nodes in a computer network.
The hosts file is named as “hosts” without any extension. It file is a plain text file. In this article we discuss about the structure and location of the hosts file in different operating systems and how we can configure the HOSTS file to block online advertising, or malicious websites.
You can edit the file using any text editor. You can even create the hosts file if there is none.

Location of Hosts file and structure.

windows-hosts-file-edit hosts fileThe hosts file location is different in different operating systems. Location of the files in some of the operating systems are given below,

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Windows NT	:	%SystemRoot%system32driversetc
Windows 2000	:	%SystemRoot%system32driversetc
Windows XP	:	%SystemRoot%system32driversetc
Windows 2003	:	%SystemRoot%system32driversetc
Windows Vista	:	%SystemRoot%system32driversetc
Windows 7	:	%SystemRoot%system32driversetc
Mac OS X 10.2 or newer and iOS	:	/private/etc/hosts
Unix, Unix-like (AIX, HP-UX, IRIX, Linux, Minix, Ultrix etc) , POSIX	:	/etc/hosts
Android		:	 /system/etc/hosts
Symbian OS 9.1+ :	C:private10000882hosts

Each line in the hosts file consists of an IP address in the first text field followed by one or more hostnames. These entries are separated by white space or tab. See example below,
127.0.0.1 localhost
The above entry is called “loopback” entry and it defines a local address and can be used to direct the computer to send a packet to itself. See below other examples of Google and Yahoo

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216.109.118.74 www.google.com
64.233.183.99 wwww.yahoo.com

Using Hosts file to Block unwanted sites or content like advertisements

To block any site, you just add the following entry in the hosts file.
127.0.0.1 samplesite.com
In the above example replace “samplesite.com” with which ever site you want to block. The above entry prevents access to the site by redirecting any connection attempts back to the loopback address, that is 127.0.0.1.
So if you want to block “cpalead.com” just add the following entry in the hosts file.
127.0.0.1 cpalead.com

There are hundreads of such ad sites in internet. Finding and adding each one of them to the hosts file may be a tedious job. The MVPS HOSTS file is an excellent choice here. MVPS HOSTS includes most major parasites, hijackers and unwanted Adware and  Spyware programs. You can check it here.
Since this method blocks all unwanted sites from downloading content it will speed up internet browsing and is really useful even for blocking download of malicious code from malware sites.

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Binu GeorgeTechnology & Toolsedit hosts file,hosts file vista,how-to guides,location hosts file,productivity,Top 10,ubuntu hosts file,windows 7 hosts,windows hostsIn this post we will see how to edit hosts file (Eg. windows hosts file) to Block unwanted Sites, ads, banners, cookies etc. Hosts file is used to map hostnames to IP addresses. The hosts file is used by the operating system and it assists the OS in...Tech-Knowledge that helps