I am on DHCP and have GX20 connected to the internet via a LAN port of my ISP's router. How do I verify if GX20 is actually doing what it is supposed to do? Do I need the optional Cisco Umbrella subscription or there are some basic security that it already provides? There should be a verification that I can do myself. I am not sure if "This Security Appliance is functioning normally" provides the level of assurance that I need.
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