I have theTechnicolor CGM4140COM gateway, and I am having the same issue! Ports show open but will NOT pass traffic!
When I could go DIRECTLY into the gateway. and add a "user defined" port they all WORKED!
Now that I have to use the webapp, I have lost ALL access to my all 6 of my home cams!
I have called more than 3 times to tier 1 customer service and this issue is still not fixed.
I need direct access again, or for tier 3 to open all the ports I need to program my home network.
THIS A WEBAPP SOFTWARE ISSUE, NOT A HARDWARE ISSUE!! My ports worked for 2 years BEFORE the WEBAPP!
Hello I am sorry about the problems you have been experiencing with opening the ports for your XH cameras on Xfinity. I will escalate the issue for you because you said you have tried everything you could and please uninstall the app as well and install it back.
I'm having the same issue with my gateway.
None of the ports configured to passthrough are actually working, standard or non-standard.
Gateway logs show that the configuration message appears to have been sent back to the gateway from xfi, but nothing going through.
I decided to create my own question as I realized I have a different gateway hardware. Mine does not allow for turing off the "advanced" security option, but even completely turing off the firewall does not allow ports to pass through.
Hello, martinhouse905! Thanks for reaching out to us for help with these port forwarding issues on your gateway. I'd love to work with you and take a closer look to help get this issue resolved.
Please send me a private message with your first and last name, as well as your service address so I can help get those cameras up, and you can feel more secure in your hope again! 🙂
To send a private message, click my name "ComcastTambrey", then click "send a message".