Security certificate

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A security certificate is a small data file that allows the web browser to verify that the server it is communicating with has been checked and signed by the issuer of the Security certificate on which we rely.

NetFree users need to install a Security certificate so that NetFree can filter the secure sites, see here for more details.

Without installing the Security certificate, the sites will still be filtered, but the computer will refuse to enter them because it does not trust the signature of the site that changed after filtering.

Please note that each Netfree Internet provider has its own Security certificate. If you change a provider, you will need to reinstall the Security certificate.
Here you can download a Security certificate from any provider.

Note: If you have installed the security certificate and http://netfree.link/start#/auto-check-problems Auto troubleshooter] did not find any problem, But there is still an error with the Security certificate see Possible problems with installing a certificate and their solutions.

installation:

Standard certificate installer

Installation on different operating systems:

•   Installing certificate on computer manually
•   Installation of certificate by CMD in Windows
•   Installation of certificate in Ubuntu operating system
•   Installation of certificate in MacBook OSX operating system
•   Installation of certificate in CentOS
•   Installation of certificate in ChromeBook
•   Installation of certificate in Android
•   Installation of certificate on a IPhone

Installation in various software:

•   Installation of certificate in Firefox browser
•   Installation of certificate in Chrome browser in Linux
•   Installation of certificate in Thunderbird
•   Installation of Certificate in NOD32 Antivirus Software
•   Installation of certificate in the Backup and Sync software from Google \ Drive File Stream
•   Installation of certificate in Waze app
•   Installation of certificate in filemail Software
•   ?
•   ?
•   ?
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Installation on mobile devices:

•   Installation of certificate in Android
•   Installation of certificate on a IPhone

Installation on various devices:

Installation of certificate in printers

Installation of certificate in security equipment

Advanced installation for developers:

Tools

•   Docker
•   curl
•   postman
•   GIT
•   github desktop

Text editors

•   Visual Studio Code
•   Atom

Development environments

•   Android Studio
•   IntelliJ IDEA
•   PyCharm
•   PhpStorm
•   Flutter

Javascript

•   Installation of certificate in all Node products
•   npm
•   Yarn
•   bower

Python

•   Installing Certificate for the Python requests library
•   pip

Java (And Java-based software)

•   Java
  •   Android Studio
  •   IntelliJ IDEA
  •   PyCharm
  •   PhpStorm
  •   Memento Database

PHP

•   PHP
•   Composer

Various

•   WAMP
•   Wordpress
•   ruby
•   mix

Uninstalling Security certificate:

Uninstalling security certificate in windows operating system