Set Firefox Check Web Server Certificate Mandatory to Ensure Security

Last Updated:-March 30, 2011
We are living in a world where security and user-friendly concepts fight each other. If one system is secure, definitely it will lack user-friendly nature. If one system is user-friendly, then it should suffer some security flaws. Reason for I am saying this is, many users (average users) want to use software or services without any troubles in terms of security. In the case of web security, as a normal user, it is our duty to ensure that the websites we are visiting have proper security certificates and safe to browse. One of the most recognized schemes for maintaining the security of a website is OCSP. OCSP stands for Online Certificate Status Protocol and it checks the status of the web server security certificate. There are 3 common responses usually get and they are currently expired, or unknown. If you are really concern about web safety, it is your duty to ensure that your browser always checks the certificate status of the website you are visiting. By default most browsers (Including Mozilla Firefox) disable this feature to make sure your speed is not reduced and prevents the situation where users cannot access websites with expired certificate any longer. If you are using Firefox browser it is easy to set the status "strict" about checking server certificate by enabling OCSP requirement.

Set Firefox strict in Checking Server Certificate by Configuring OCSP Mandatory

In order to set strict about checking server certificate by enabling OCSP check, follow the steps below.

  1. Go to Firefox Config Page

    To login Config page, type about:config on the address bar and press enter. Now you will see a warning message.

  2. Click on I'll be careful, I promise button shown by Firefox
    Check the Server level of safety

  3. Search for security.OCSP.require and set the value True
    Enable OCSP.require
To set the value of the security.OCSP.require to true in Firefox, you may right click on it and click on value. After changing the value to true, Mozilla will strictly check for the web server certificate. If you suspect any website, it is better to enable this feature and then continue browsing. If the web server certificate is outdated or fake, Mozilla browser will find it out and prevent you from accessing that page.

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