Comcast Business Support Community

Phone scammers block?

Four calls so far today. Several yesterday. What is Comcast doing to block scammers using spoofed numbers?

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Port Forwarding Problem with DPC3941

We are using the Comcast (Cisco) DPC3941B router/gateway on a small office network. We need to forward Port 443 to the server. The IP value of the Comcast gateway is 192.168.16.1. The fixed IP value for the server is 192.168.16.2. Whenever I try to create a port forwarding rule on Port 80 or Por

John:Port forwarding on the DPC3941 is sporadic at best. As IT for my company, I have tried many times to open ports to my internal resources. To illustrate, I'll relate a call I had with a long time Comcast rep who prided himself on being able to fi

Port forwarding will not work.

I've setup routers/modems before so this is not my first rodeo. I've configured the router properly on the 192.168.1.0/24 network and all of our internal clients can access resources outside the private network. My DynDNS address will successfully ping resulting with the internet IP address assigned

As IT/admin for my company, I've had to deal with this router many times. I have tried to open ports on many occasions - ALL FAILED - whether it's a web server, mail server or security cameras, etc. Now I'm trying to open a Jamulus port on my "busine

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