Xfinity router: What does the white blinking light mean?

A white light blinking on your Xfinity Gateway, modem, or router indicates a network connection issue. Generally, it means ...
Ars Technica

Pass thru router admin requests from outside network (Comcast business)

I am trying to get access to the admin functions of a Linksys wireless router that sits inside a network headed by a Comcast Business router/cable modem combo. I know the public IP address of the ...