Visitor

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2 Messages

Sunday, January 18th, 2026 1:19 AM

Legacy Tablo ports forwarding

Been asked, but asking again since this seems simple and was not an issue under ATT

I would have stayed with ATT but pricing is horrible, and only supported a failing DSL infrastructure in my area

Tablo external access uses 2 port forwards with a different public port mapped to a private port

Xfinity uses very limited port forwarding with only the same public and private ports allowed

Port Triggering does not seem to be the correct answer since the Tablo does not constantly connect out to a service(I am trying this but so far not working)

UPnP works for some time but randomly stops and or does not save the port mapping beyond a certain period of time.

Xfinity if you are listening, why can't this be accomplished and could you allow us more access to features?  

Finally what would be the best practice work around?

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Official Employee

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1.3K Messages

16 days ago

@user_jattqg  Thanks for posting to the community and sharing your feedback. This https://www.xfinity.com/support/articles/xfi-port-forwarding page has all the steps for port forwarding. The section we recommend reviewing is the Advanced Security one, as that may be causing what you experience. If disabling doesn't change or resolve the port changing automatically, you can place the modem in Bridge Mode, and use your own router to manage the network. That will allow the devices you need to access the internet. 

Visitor

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2 Messages

Thanks for the reply, but this does not address the issue of public and private ports differing or the UPnP not holding settings.  I was trying to avoid using another router.

Official Employee

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3K Messages

 

user_jattqg If the advanced security feature built into our equipment blocks access at any given time, it was set to do so for a reason by our online security team that keeps that feature updated. The only way to fully bypass it is with your own router, and I can't provide any other way as we don't have one. The only 2 things I know of that would change UPnP settings without you doing it would be an update we push out, or the device being reset might also set them to defaults. 

 

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Expert

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33.4K Messages

16 days ago

Moved to Customer Service as this has nothing to do with Accessibility/disability.

(edited)

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