Any Weblock is a free utility that allows you to block access to any web page. It works with all browsers and has a backup function, useful for undoing changes.  Before starting, Any Weblock asks that you create a password to restrict access to the program. The pages to be blocked are added with a click on Add: specify the domain, add an explanatory note and press OK. Another click on Apply changes and the page will be blocked. The technique used by Any Weblock - it publishes the hosts file - it is safe and effective, although it limits the possibilities of blocking a lot, since the blocked page will show a generic connection error instead of a warning. Any Weblock does not record access attempts either.