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Firefox: Add a Trusted CA

September 8, 2019

The default Firefox comes with certificates from well-known commercial CAs. My ISP is also CA and Firefox cannot verified it because the CA is not recognized. How do I force Firefox to accept my ISPs certificate?

Like many apps Firefox needs to have a certificate from the CA that signed the web server’s certificate. However, you can import a new CA certificate into Firefox version 3.5 using the following simple procedure:

Fire a Firefox browser (i.e. Launch Firefox)

Choose Preferences from the Edit menu.

Click the Advanced button.

Select the Encryption pane.

Fig.01: Firefox View Certificate

Click the View Certificates button.

Click the Authorities tab.

Click the Import button at the bottom of the screen.

Fig.02: Firefox Install / Import CA Certificate

Navigate to the CA certificate and import it.

Posted by: SXI ADMIN

The author is the creator of SXI LLC and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.

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