How to block unwanted sites from your computer

How to block unwanted sites from your computer

Suppose if you want to block the sites:sitetobeblocked.com and dangersite.com from accessing your computer go to
C://windows/system32/drivers/etc folder
Here you will find a file by name hosts.  Open this file using note pad.  Add the following 4 lines

127.0.0.1 sitetobeblocked.com
127.0.0.1 www.sitetobeblocked.com
127.0.0.1 dangersite.com
127.0.0.1 www.dangersite.com

save and close.

That is all.  Here after it is not possible  to access the above 2 sites.  (Replace the names of sites you wish to block.  You can block any number of sites)