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Cisco Certificate Import

Advanced Umbrella features, such as IP Layer Enforcement, SSL Decryption through the Intelligent Proxy and the ability to block your own custom URLs require that the Cisco Root CA be installed locally. Other features, such as File Inspection, gain greater efficacy from having the certificate present as we're able to proxy and block more traffic.

For more about the importance of SSL Decryption, watch this quick video.

In addition, by installing the certificate, you avoid a common problem with block pages that your users may encounter. When HTTPS enabled domains are blocked by your policy, Cisco Umbrella presents a block page to you which is also served over HTTPS. This block page is encrypted with a certificate signed by the Cisco Root CA. In order to avoid certificate errors when accessing the block page, you must install the Cisco Root CA in your browser, or if you have a network of computers, in your users' browsers.

Why take these steps?

Umbrella’s Block Page and Block Page Bypass feature present an SSL certificate to browsers that make connections to HTTPS sites. The certificate will match the requested site but will be signed by the Cisco Root Certificate Authority (CA). If the Cisco Root CA is not trusted by your browser, an error may be displayed. Typical errors include "The security certificate presented by this website was not issued by a trusted certificate authority" (Internet Explorer), "The site's security certificate is not trusted!" (Google Chrome) or "This Connection is Untrusted" (Mozilla Firefox). Although the error is expected, the messages displayed can be confusing and annoying and you may wish to stop them from appearing.

To avoid these errors entirely, install the Cisco Root CA in your browser, or the browsers of your users (if you're a network admin). This can be done on a per-browser, per-machine basis for personal use or small deployments. For larger deployments, an automatic installation via Group Policy (GPO) can be done. Note that the automatic installation via GPO will only work for users with Internet Explorer or Chrome on Windows systems. As such, if your network includes some users who use Firefox or Safari browsers, and for users on non-Windows operating systems, the manual installation procedures must be followed.

This article describes the procedures required to manually install the Cisco Root CA in your browser

For advanced users or systems administrators with larger networks, this article also describes how to install the Cisco Root CA automatically (via Active Directory Group Policy Objects) for a group of users in Microsoft Windows Active Directory. This automatic installation of the Cisco Root CA only works for users with Internet Explorer or Chrome on Windows systems, so if your network includes some users who use Firefox or Safari browsers, and for users on non-Windows operating systems, the manual installation procedures must be followed for those users.

IMPORTANT: You must be a local administrator over the computer (or a network administrator over the network) in order to perform these steps.

How to install the Cisco Root CA

The procedures included in this article are:

Automatically Installing the Cisco Root CA

As a network administrator of an Active Directory network environment, you can automatically install the Root CA in all of your users' browsers by creating a Group Policy Object (GPO) on your Active Directory server. This can be created by using either the Microsoft Management Console (MMC) or the Group Policy Management Console (GPMC).

Installing the CA with Group Policy Using the Microsoft Management Console (MMC)

  1. Download the Cisco Root CA. For more information, see Download the Certificate.
  2. Log in to your Active Directory server using a domain administrator account.
  3. Select Start | All Programs | Administrative Tools | Active Directory Users and Computers. The Microsoft Management Console (MMC) is displayed.
  4. To create a domain-wide policy, right-click your domain root Organizational Unit (OU), which is displayed as your domain name, and select Properties from the context menu.
  5. In the <OU_Name> Properties dialog box, click the Group Policy tab.
  6. Click New, and name the policy Umbrella Certificate Installer and press Return / Enter.
  7. Select the new Group Policy Object, click Edit. The Group Policy Object Editor is displayed.
  8. In the left configuration options sidebar, expand Computer Configuration | Windows Settings | Security Settings | Public Key Policies, right-click Trusted Root Certification Authorities, and select Import from the context menu.
  9. In the Certificate Import wizard, click Next, and in the File to Import page, click Browse and navigate to where you downloaded the certificate authority on your local system, and double-click the Cisco_Umbrella_Root_CA.cer file.
  10. With the full path to the certificate displayed in the File name field, click Next.
  11. Accept the default option, place all certificates in the following store (Trusted Root Certification Authorities), click Next, and then click Finish and OK.

You have now created the Group Policy Object to install the certificate on all the computers in your domain. The new policy may not take effect immediately on all client machines. By default, the background synchronization processing happens every 90 to 120 minutes at randomized times. Rebooting the client machines will force the synchronization.

You can check that the Group Policy has propagated to all computers in the domain by opening Internet Explorer on a workstation PC, opening Tools|Internet Options | Content | Certificates | Trusted Root Certification Authorities, and ensuring that the Cisco Root CA certificate is present.

Installing the CA with Group Policy Using the Group Policy Management Console (GPMC)

The Microsoft Group Policy Management Console (GPMC) with Service Pack 1 (SP1) unifies management of Group Policy across the enterprise. The GPMC consists of an MMC snap-in and a set of programmable interfaces for managing Group Policy.

  1. Download the Cisco Root CA. For more information, see Download the Certificate.
  2. Log in to your Active Directory server using a domain administrator account.
  3. Select Start | All Programs | Administrative Tools | Group Policy Management. The Group Policy Management Console (GPMC) appears.
  4. To create a domain-wide policy, right-click your domain root Organizational Unit (OU), which is displayed as your domain name, and select Create and Link a GPO Here from the context menu.
    The New GPO dialog box appears.
  5. In the Name field of the New GPO dialog box, enter a meaningful name for the policy object. For example, Umbrella Certificate Installer.
  6. Right-click the new Group Policy Object, Umbrella Certificate Installer, on the right-side of the window, and select Edit from the context menu. The Group Policy Object Editor appears.
  7. In the left configuration options sidebar, expand Computer Configuration | Policies | Windows Settings | Security Settings | Public Key Policies, right-click Trusted Root Certification Authorities, and select Import from the context menu.
  8. In the Certificate Import Wizard click Next, and in the File to Import page, click Browse and navigate to where you downloaded the certificate authority on your local system, and double-click the Cisco_Umbrella_Root_CA.cer file.
  9. With the full path to the certificate displayed in the File name field, click Next.
  10. Accept the default option, Place all certificates in the following store (Trusted Root Certification Authorities), click Next, and then click Finish and OK.

You have now created the Group Policy Object to install the certificate on all the computers in your domain. The new policy may not take affect immediately on all client machines. By default, the background synchronization processing “only” happens every 90 to 120 minutes (at randomized times). Rebooting the client machines will force the synchronization.

You can check that the Group Policy has propagated to all computers in the domain by opening Internet Explorer on a workstation PC, opening Tools|Internet Options | Content | Certificates | Trusted Root Certification Authorities, and ensuring that the Cisco Root CA certificate is present.

Installing the CA in Firefox using Group Policy

By default, Group Policy cannot configure Firefox and, in general, deploying the Cisco Umbrella Root CA can be difficult for Firefox users, because there is no built-in way to centrally manage Firefox. This article describes how Firefox can be configured to trust certificates in the Windows certificate store:
https://support.umbrella.com/hc/en-us/articles/115000669728

This makes certificate management via group policy much easier in the long run.

Installing the Cisco Root CA on a single computer

The following procedures describe the manual methods for installing the Cisco Root CA in Internet Explorer, Firefox, and Safari browsers on an individual computer.

Installing the CA in Internet Explorer or Chrome on Windows

To manually install the Cisco Root CA in your Internet Explorer browser, use the following procedure. Chrome uses Internet Explorer's certificate store, so the same procedure will also configure Chrome.

  1. Download the Cisco Root CA file. For more information, see Download the Certificate.
    Note: If the Open File - Security Warning dialog appears, click Open.
  2. Click Install Certificate.
  3. In the Certificate Import Wizard window, click Next.
  4. In the Certificate Store window, select Place all certificates in the following store and then click Browse.
  5. In the Select Certificate Store window, select Trusted Root Certification Authorities and click OK.
    In the Certificate Store window, the Certificate store: shows Trusted Root Certification Authorities.
  6. Click Next and then click Finish.
  7. In the Security Warning windows, click Yes to install the certificate.
    The Certificate Import Wizard will notify you that "The import was successful."
  8. Click OK.
  9. Restart Internet Explorer.

Installing the CA in Firefox on Windows

To manually install the Cisco Root CA in your Firefox browser on Windows, use the following procedure. This procedure assumes that you, the computer administrator, have already downloaded the Cisco Root CA and that you have sufficient access privileges to install the certificate on the local system

  1. Download the Cisco Root CA file, Cisco_Umbrella_Root_CA.cer.
  2. Click the Open Menu icon near the top right-hand corner of the browser window.
  3. Click Options > Advanced > Certificates > View Certificates > Authorities > Import.
  4. Browse for and select the Cisco Root Cert, downloaded in the first step.
  5. Select Trust this CA to identify websites, then click OK and OK again.
  6. Restart Firefox.
    The Firefox certificate store can also be manipulated from the command line using the certutil tool from the NSS Tools package. For more information, see Mozzila's Using the Certificate Database Tool.

Installing the CA on Mac OS X (for the Safari browser, or all browsers)

To manually install the Cisco Root CA in your Safari browser (or all browsers) on Mac OS X, use the following procedure. You must be the computer administrator to perform this action.

  1. Download the Cisco Root CA file, Cisco_Umbrella_Root_CA.cer.
  2. Double-click the file or drag and drop it on top of the Keychain Access icon in the Applications | Utilities folder. The Add Certificate windowappears.
  3. Click Always Trust.
  4. Double-click the Cisco Root CA to open its properties window. Change the When using this certificate pulldown to Always Trust:

Installing the CA on Mac OS X Command line

To install the CA on the OS X command line, download the CA and run the following command.
Note: You must be the computer administrator to perform this action.

sudo /usr/bin/security add-trusted-cert -d -r trustRoot -p ssl -p basic -k /Library/Keychains/System.keychain /path/to/Cisco_Umbrella_Root_CA.cer

Installing the CA in Chromium or Chrome on Linux

If you want to manually install the Cisco Root CA in a Chromium based browser in Linux, use the following procedure.

  1. Download the Cisco Root CA file, Cisco_Umbrella_Root_CA.cer.
  2. Open Chromium Settings.
  3. Scroll down to HTTPS/SSL.
  4. Click Manage certificates.
  5. Click Authorities.
  6. Click Import.
  7. Select the Cisco_Umbrella_Root_CA.cer and click Open.
  8. Select Trust this CA to identify Websites.
  9. Click OK.

Download the Certificate

  1. In Umbrella navigate to Deployments > Configuration > Root Certificate.
  2. Click Download Certificate.

Alternatively, click here to download the certificate.


Enable File Inspection < Cisco Certificate Import Information > Manage Umbrella User Roles

Cisco Certificate Import