Blocking Unwanted Connections with a Hosts File in Windows


You can use a HOSTS file to block ads, banners, 3rd party Cookies, 3rd party page counters, web bugs, and even most hijackers. This is accomplished by blocking the connection(s) that supplies these little gems. The Hosts file is loaded into memory (cache) at startup, so there is no need to turn on, adjust or change any settings with the exception of the DNS Client service . Windows automatically looks for the existence of a HOSTS file and if found, checks the HOSTS file first for entries to the web page you just requested. The 127.0.0.1 is considered the location of your computer, so when an entry listed in the MVPS HOSTS file is requested on a page you are viewing, your computer thinks 127.0.0.1 is the location of the file. When this file is not located it skips onto the next file and thus the ad server is blocked from loading the banner, Cookie, or some unscrupulous ActiveX, or javascript file.

Example – the following entry 127.0.0.1 ad.doubleclick.net blocks all files supplied by that DoubleClick Server to the web page you are viewing. This also prevents the server from tracking your movements. Why? … because in certain cases “Ad Servers” like Doubleclick (and many others) will try silently to open a separate connection on the webpage you are viewing, record your movements then yes … follow you to additional sites you may visit.

Using a well designed HOSTS file can speed the loading of web pages by not having to wait for these ads, annoying banners, hit counters, etc. to load. This also helps to protect your Privacy and Security by blocking sites that may track your viewing habits, also known as  “click-thru tracking” or Data Miners. Simply using a HOSTS file is not a cure-all against all the dangers on the Internet, but it does provide another very effective “Layer of Protection”.

In case you’re wondering … this all happens in microseconds, which is much faster than trying to fetch a file from half way around the world. Another great feature of the HOSTS file is that it is a two-way file, meaning if some parasite does get into your system (usually bundled with other products) the culprit can not get out (call home) as long as the necessary entries exist. This is why it’s important to keep your HOSTS file up to Date.

Instructions :

Step 1: You can download the hosts file here.

Step 2: Extract the downloaded zip.

Step 3: right-click the installer “mvps.bat” and select: Run as Administrator. Ok the UAC prompt and the batch file will run … which will backup the existing HOSTS file (HOSTS.MVP) then copy the updated HOSTS file to the proper location. You should see a completed prompt (press any key).
Thats it … !!!

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