interested in purchasing the core router but my current cable modem is also my router...can i use both or do i need to get just a cable modem?
See this thread. https://community.norton.com/en/forums/how-set-norton-core-fios-cable-ro...
Your best course of action is to place your cable modem/router in bridged mode. Then use the Core router as your main control of your local network.