Use NoScript on FireFox, and block URLs you absolutely never want your computer connecting to in the hosts file. There are many other things that can be done, but these have the largest effect as far as blocking yourself from accessing servers you do not want to.
To change your browser to not query Google if you type a URL incorrectly into the address bar:
Open a new tab, type about
:config, and press enter.
In the search bar at the top of the about
:config page, search for the term "keyword" without quotes.
To have the browser do nothing when a URL is typed incorrectly, change the "keyword.enabled" key to "disabled".
To have the browser open a secure search page instead of Google when a URL is typed incorrectly, change the "keyword.URL" key to one of the following:
https://ssl.scroogle.org
https://www.startpage.com
https://www.duckduckgo.com
To block google-analytics.com in the hosts file:
Navigate to C:\WINDOWS\system32\drivers\etc.
Right click on the hosts file | click Properties | uncheck "Read Only" if it is checked | press OK.
Open the hosts file using notepad.
Add the following text under where it says "127.0.0.1 localhost":
127.0.0.1 google-analytics.com
127.0.0.1 ssl.google-analytics.com
127.0.0.1
www.google-analytics.com
Save and close the file.
Right click on the hosts file | click Properties | check "Read Only" if it is not checked | press OK.
It is important to make sure the file is Read Only after you save and close it so that other programs cannot alter the hosts file.
To add NoScript as a FireFox add-on:
In FireFox, go to Tools | Add-ons.
Search for the add-on NoScript and click "Add to FireFox".
Other suggested add-ons are:
Adblock+: to block ads on websites, use the EasyList and EasyPrivacy filters.
HTTPS-Everywhere by EFF: to force a set list of websites to use SSL/HTTPS encryption, which encrypts the data sent between your browser and the webserver.
BetterPrivacy: to quickly delete Flash cookies.
CookieCuller: to help you keep the cookies you want to keep, and quickly delete the rest of the cookies.
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