Is there a way to determine the modem IP address in front of Firewalla?


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    Typically the cable modem speaks to the cable headends using DOCSIS, so it doesn't have an IP address, other than the one that's assigned by the headend, which is passed to you.

    And ... if you traceroute,  very likely the first hop is the router connecting to (or is) the cable headend.  (unless there are tunnels ...)

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