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Secure Internet and SaaS Access (ZIA)

Configuring Mozilla Firefox to Use a PAC File

To redirect your web traffic to the Zscaler cloud, configure your browser to use a PAC file. A PAC file is a text file that directs a browser to forward traffic to a proxy server before going to the destination server. The Zscaler service hosts a default PAC file that uses geolocation technology to forward traffic to the nearest ZIA Public Service Edge. To learn more, see Using Default PAC Files to Forward Traffic to ZIA.

The browser version used in this example is Mozilla Firefox 94.0.2.

To configure Mozilla Firefox to use Zscaler’s PAC file URL:

  1. Copy the default PAC file URL from your ZIA Admin Portal:
    1. Go to Administration > Hosted PAC Files.

    1. Copy the URL of the Proxy PAC to your clipboard.

  1. Open Mozilla Firefox, open the menu, then click Settings.

  1. Under the General section, scroll down to Network Settings and then click Settings....

The Connection Settings window appears.

  1. In the Connection Settings window, select Automatic proxy configuration URL and paste the PAC file URL that you copied from the ZIA Admin Portal.

  1. Click OK to save the configuration.

For more information about getting started on the Zscaler service, see Getting Started.

Related Articles
Writing a PAC FileBest Practices for Writing PAC FilesFirewall Requirements for Using PAC FilesUsing Default PAC Files to Forward Traffic to ZIAUsing Custom PAC Files to Forward Traffic to ZIAForwarding Traffic Based on User's Location Using PAC FilesLoad Balancing for PAC Forwarded TrafficDistributing a PAC File URL to UsersConfiguring Internet Explorer to Use a PAC FileConfiguring Google Chrome to Use a PAC FileConfiguring Mozilla Firefox to Use a PAC FileConfiguring Safari to Use a PAC FileIdentifying the PAC File on a Device Using Browsers