לעברית לחצו כאן
Update: as of 3 May 2019, a new certificate installation software was released, the new software automatically installs the certificate also in Firefox browser.
Install the certificate for browsing:
The Firefox browser has its own certificate / certificate list, therefore, it is necessary to install NetFree's certificate on it.
Download certificate from this link http://netfree.link/netfree-ca.crt, (you must be connected to NetFree).
Open Firefox settings > privacy & security , search for Security , click "View Certificates ..."
In the "Authorities" area, click "Import" and select the certificate file you downloaded Sometimes you need to restart your browser.