Access Keys:
Skip to content (Access Key - 0)

Installing and Renewing Certificates in Firefox

This page will guide you through installing and renewing certificates in Mozilla Firefox.

Note: IS&T strongly advises that you set a master password to protect your certificates and any stored passwords. See: How do I set a master password in Firefox?

Click on the thumbnails to view the full size images.

Install MIT Personal Certificate.

  1. Navigate, in Firefox, to http://ca.mit.edu.
  2. Enter your Kerberos username and password, and your MIT identification number, and click Next.
    Identification page

  3. On the page Generate a Private Key, leave the Key Size at the highest grade for your browser. The Certificate Lifetime gives the default number of days until this personal certificate expires. Click Next to accept the defaults.
    Result: The message "Key Generation in progress ..." appears.
    Certificate life screen

  4. An Alert message confirms that the certificate has been installed, and instructs the user to backup the personal certificate.
    Alert message

    Note: It is not necessary to backup your personal certificate. If you do wish to backup your personal certificates locally, in Firefox go to Preferences/Options > Advanced > View Certificates, click Backup All, and follow the instructions.
  5. Your certificate is now installed.

  6. If this is your first time installing certs on Firefox, you also need to install the MIT Certificate Authority. The web installer will prompt you to install it by clicking a link.
    MIT CA
    From here, choose MIT to "trust this CA to identify websites"
    Trust this CA
    And you are good to go.

Delete Expired and Duplicate Certificates

  1. Open Firefox Preferences
    1. Open Preferences from menu path:
      • On Windows: Tools > Options (or Firefox > Options)
      • On Linux: Edit > Preferences
      • On Mac OS X: Firefox > Preferences
    2. Open Preferences from the 3 bars in the upper right.
      firefox preferences

  2. Select the Advanced pane. Then select the Certificates tab.
    firefox prefereences

  3. From Your Certificates, click View Certificates.
    firefox preferences

  4. Select the expired or duplicate certificate and click the Delete button. You will be prompted if you want to delete the certificate. Click OK to continue.
    firefox preferences

  5. Close and re-open Firefox, and confirm that you have one, non-expired certificate.

Install the MIT Certificate Authority (CA).

  1. If you are viewing this page in Firefox, select here to download the MIT CA (Certificate Authority).
    Alternatively, copy and paste the following URL into Firefox: http://ca.mit.edu/mitca.crt
  2. Click to check the box Trust this CA to identify web sites.
Not what you're looking for?
See Troubleshooting Certificates in Firefox or go to Certificates at MIT

IS&T Contributions

Documentation and information provided by IS&T staff members


Last Modified:

September 26, 2012

Get Help

Request help
from the Help Desk
Report a security incident
to the Security Team
Labels:
firefox-cert-issue firefox-cert-issue Delete
c-firefox-certs c-firefox-certs Delete
firefox firefox Delete
certificate certificate Delete
install install Delete
renew renew Delete
delete delete Delete
Enter labels to add to this page:
Please wait 
Looking for a label? Just start typing.
Feedback
This product/service is:
Easy to use
Average
Difficult to use

This article is:
Helpful
Inaccurate
Obsolete
Adaptavist Theme Builder (4.2.3) Powered by Atlassian Confluence 3.5.13, the Enterprise Wiki