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Use SSL Inspector to Inspect SMTPS and HTTPS Traffic

Important note: SSL Inspector requires the root certificate of your NGFW to be installed on the workstations / browsers that would be subjected for HTTPS inspection. 

For manually installing the root certificate via GPO-

https://support.untangle.com/hc/en-us/articles/216752327

 

For manually installing the root certificate on Mac OSX ( Yosemite ) -

https://support.untangle.com/hc/en-us/articles/216191898

 

For installing the root certificate on Windows using the installer-

  1. Login to the web admin interface.
    AdminUILogin.jpg
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  2. Navigate to Apps > SSL Inspector Settings.

  3. Click the Configuration tab.  
    SSLInspectorStatusTab.jpg
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  4. Click the "Download root certificate installer" button and run through the installation wizard.
    SSLInspectorConfigTab.jpg


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  5. By default, processing of HTTPS is enabled under Configuration tab. Enable SMTPS processing as well.
    SSLInspectorConfigProtocolProcessing.jpg
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  6. Under the Rules tab, by default it inspects SMTPS ( port 25 ) and inspects Youtube, Google, Twitter, Yahoo, Bing, Wikipedia for HTTPS traffic. Check "Inspect all traffic" to process all other HTTPS sites.
    SSLInspectorRulesInspectAll.jpg
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  7. Click "Enable" button under Status tab to turn on SSL Inspector.SSLInspectorStatusTabEnable.jpg

 

 

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