Just got my home security installation today. I actually use my router to configure power forwarding, QoS, filtering, etc. Was not happy when Comcast told me I needed to put their router in front of mine. He couldn't even tell me why Comcast needed to put their first, just that "they like it that way." Yea, well I don't. As soon as the tech left, I put my router back to connecting directly to my modem, and have the Comcast security router behind mine. Works just fine. Don't listen to them! You can put their router behind yours.
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