Deploying a WatchGuard DPI Certificate on an iPhone

Step 1: First, make sure the iPhone is connected to a network controlled by the firewall.  On the phone, navigate to the Certificate Portal of the firewall.  This can be accessed by going to
http://<IP of Interface>:4126/certportal

Step 2: Once you access the Certificate Portal, download the certificate that is available.

WatchGuard DPI on an iPhone

Step 3: After the certificate downloads, select Install to set it up as a profile on the phone.  You may be prompted to enter the phone’s password.  Click Install on the following two screens as well.

WatchGuard HTTPS Proxy on an iPhone

Step 4: The certificate will now be trusted on the device.

WatchGuard DPI on iPhone

Step 5: On the iPhone go to

Settings>General>About>Certificate Trust Settings then enable the certificate.  

You are ready to go.  Don't forget this last step as it is key to get iOS to trust the certificate.