Port Forwarding not working

I recently purchased a new laptop and followed the Xfinity directions on setting up port forwarding (https://www.xfinity.com/support/articles/xfi-port-forwarding). I opened up the app, deleted my old laptop from the list, selected my new laptop, and added the port (2346). Nothing. The port remains closed. I reset my modem. Nothing. The port remains closed. I scoured these forums and followed various directions from Xfinity employees. Nothing. The port remains closed. I opened up the old Gateway Admin and verified I had not set up a static IP. Nothing. The port remains closed. I made sure my old laptop was set to DHCP and not for Reserved IP. Nothing. The port remains closed.

Edit: I now no longer have access to 10.0.0.1

Responses

EG

Expert

•

107.1K Messages

1 year ago

The concern is not "Xfinity Home Security / Devices And Equipment" help related. Topic moved here to the proper help section for assistance.

0

XfinityDena

Official Employee

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2.5K Messages

1 year ago

Thank you for reaching out @user_6e14a6. I'm sorry to hear you're having issues with your port forwarding, but you have definitely come to the right place for assistance. Normally the following troubleshooting should assist you:

In the Xfinity app, navigate to Connect > your network > Advanced Settings > Port Forward.
Locate the port forward that you are trying to use.
If the port forward settings that are in use are associated with a device, select Edit to adjust these settings or delete the port forward.
If the port forward settings are in use but not associated with a device, select Delete.
Confirm that you did not set a static IP for the device using the Gateway Admin page (10.0.0.1). If you did, the static IP should be removed, the Xfinity app will use the IP address from DHCP to set a static MAC bind and establish the port forward rule.
Check Device Details and confirm that the device is using an IPv4 address to connect to the network and not an IPv6 address. The Xfinity app can only support port forwards for devices using IPv4 addresses.
- If the device is dual-stack, you should check with the device manufacturer on how to disable the IPv6 or set the IPv4 as “Preferred”.

Are you getting any error messages during any of the processes to set up the port forwarding?

2

0

U

user_349b7f

1 Message

@XfinityDena

August 31 2023.

Port Forwarding Not Working.... VERY FRUSTRATING....

Hvae done everything suggested multiple times.

Do you know of a good online tool to test if the port forwarding is working?

I am currently using https://www.yougetsignal.com/tools/open-ports/ and it tells me the ports are closed.

While I am using NMAP from my internal lan and it tells me those same ports are open on the computer in question.

Please advise

1 year ago

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XfinityNicolas

Official Employee

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1.1K Messages

Hey @user_349b7f, thank you for trying those steps and getting back to us. Since those didn't work, it may be xFi not communicating with the modem those settings. I'd like to take a deeper look. Can you send us a direct message so I can?

To send a direct message:

Click "Sign In" if necessary

• Click the "Direct messaging" icon near the top right of the 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 which appears. The "Xfinity Support" graphic replaces the "To:" line

• Type your message in the text area near the bottom of the window

• Press Enter to send it

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1 year ago

0

Xfinity App

user_6e14a6

Port Forwarding not working

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