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user_xumw8a
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2 Messages

Saturday, August 16th, 2025

Port forwarding does not work correctly

The ip of the device I'm trying to port forward is 10.0.0.2, yet everytime I try port forwarding the device, it uses the ip 10.0.0.153. There are no devices offline or online that have this ip address. I have tried several variations to achieve a solution, turning the router off and on, turning the device off and on, turning both the router and device off and on, making sure the device is using a reserved ip, using DHCP instead of reserved ip, forgetting the device in the xfinity app. Nothing works! I have done extensive research on the internet and have found many people have this issue but it never seems to be resolved. I know it works sometimes because I have set up 2 other devices without issue.

Thank You

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XfinityRay

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3.1K Messages

2 days ago

Hello, user_xumw8a! We are happy to further help with the port forward. The steps you took were great! They usually resolve the problem so I apologize it is still not working. 

1. What type of device are you setting the port forward on?

2. Do you use an Xfinity modem or your own modem?

3. Do you see a certain error message or it shows the port forward it set but the port is not opened? 

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user_xumw8a

Visitor

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2 Messages

Hello,

1. The device I'm forwarding the port on is called the Ted 5000. It is part of a home energy monitoring system. A small firmware driven micro-computer.

2. I'm using one of the newest Xfinity wifi cable modems.

3. There are not any error messages. The error is the device is assigned IP 10.0.0.4 .When I open the port using the xfinity app it is automatically assigned port 10.0.0.153 and there is not a way

to change the IP to the correct IP. It seems like the IP table on the router has not updated to the current IP assignment.

Thank You 

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1 day ago

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XfinityRay

Official Employee

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3.1K Messages

The automatic DHCP setting should still open the correct port for the Ted 5000 though it looks different when you finish, user_xumw8a. Have you checked the port and device after you were done to confirm it is still closed and not working? If that is still not working after you check it, please send us a direct message with your full name and complete service address to “Xfinity Support”. To do so, click on the direct messaging icon located at the top right of this forums page.

 

Here's the detailed steps to direct message us:
• Click "Sign In" if necessary
• Click the "Direct Message” icon (upper right corner of this page)
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list
• Type your message in the text area near the bottom of the window
• Press Enter to send your message

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