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Watchguard HTTPS Certificate

Last Updated: 7/22/2020 6:50 PM

Below are this instructions for installing the Watchguard HTTPS Content Inspection certificate.  This certificate allows HTTPS traffic to traverse through the systems correctly.

These directions include the three major Internet browsers as well as iOS and Android devices (at the bottom of this list).

Import a Certificate on a Client Device

Import a Certificate from the Certificate Portal on the Firebox

  **A client can download and install the Proxy Authority certificate from the Certificate Portal by Clicking Here. For more information, see Certificate Portal.


Import a Certificate on Windows Clients with Internet Explorer and Chrome

When you install a certificate in the Trusted Root Certification Authorities with Internet Explorer, this enables the entire system, including other programs or services that use the Windows certificate store, to use that certificate. For example, the Google Chrome browser for Windows and Windows Update will also use any installed certificates.

If the certificate is in DER format, you can format the file name with an extension of .der, .cer, or .crt. You can then distribute this certificate to users who can double-click the certificate file to start the Certificate Installer on their system.

To import a certificate with Internet Explorer manually:

  1. Select Tools.
  2. Select Internet Options.
  3. Select the Content tab.
  4. Click Certificates.
  5. Click Import and follow the steps in the Certificate Import Wizard to import the certificates. You must specify the Trusted Root Certification Authorities as the location for the certificate during this process.


Import a Certificate with Mozilla Firefox

To import a certificate with Mozilla Firefox:

  1. Select Options.
  2. Select the Advanced tab.
  3. Select the Certificates tab.
  4. Click View Certificates.
  5. Select the Authorities tab.
  6. Click Import.
  7. Browse to select the certificate file, then click Open.
  8. In the Downloading Certificate dialog box, select the Trust this CA to identify web sites check box.
  9. Click OK.
  10. Restart Firefox.

Import a Certificate with Mac OS X and Apple Safari

This process allows Safari and other programs or services that use the Mac OS X certificate store to get access to the certificate.

  1. Open the Keychain Access application.
  2. Select the Certificates category.
  3. Click + (the plus icon button) on the lower toolbar, then find and select the certificate.
  4. Select the System keychain, then click Open
    Or, select the System keychain, then drag-and-drop the certificate file into the list.
  5. Right-click the certificate and select Get Info.
    A certificate information window appears.
  6. Expand the Trust category.
  7. In the When using this certificate drop-down list, select Always Trust.
  8. Close the certificate information window.
  9. Type your administrator password to confirm your changes.


Import a Certificate with an Apple iOS Device

To import a certificate with an Apple iOS device, such as an iPhone or iPad, you need to use a DER format certificate file. 

The certificate file can be distributed to end users in several ways, such as email, website download, iOS configuration profile, or installation by the Simple Certificate Enrollment Protocol (SCEP).


Click Here to download the .DER certificate.


If you receive a certificate file by email or website download, tap the certificate to add it to the device. For example, to add a certificate distributed by email:

  1. Open the Mail app.
  2. Open the email that contains the attached certificate.
  3. Tap the attached certificate.
    The Install Profile Dialog appears.
  4. Tap Install.

If a warning message appears, you may safely ignore it at this time and tap Install. This message appears if the iOS device does not trust the signing authority for this certificate.

Import a Certificate with an Android Device

The instructions to add a certificate to an Android device are different depending on the device manufacturer. These general rules apply:

  • You must have a version of Android that is 4.3 and higher to add a certificate.
  • Android supports DER-encoded X.509 certificates. Certain devices require the certificates to be saved with a .crt or .cer file extension.

Click Here to download the .DER certificate.

If you have a copy of the certificate on your device as an email attachment or file download, some devices allow you to tap the certificate to import it to your device.

  1. Open the email application on your Android device.
  2. Open the email that contains the attached certificate.
  3. Tap the attached certificate.
    The Name the Certificate dialog box appears.
  4. Type a descriptive name for the certificate.
  5. Tap OK.

To import a certificate saved to the internal storage of an Android device:

  1. In your Android device settings, go to the security settings where certificates and credentials are stored.
  2. Import the certificate.