Visitor
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2 Messages
Connected Ethernet Device Missing from Xfinity Port Forwarding Device List
Hello,
My Ubuntu 24.04 server is connected directly to my Xfinity gateway by Ethernet and appears online in the Xfinity device list.
However, under:
WiFi → Advanced Settings → Port Forwarding → Add Port Forward
the device does not appear in the dropdown. Only two Nest devices are available.
In the device list, this server was originally misidentified as Device Type: Misc Device and Operating System: Android Baklava 16, instead of Ubuntu. I manually changed the device type to Desktop, but the operating system is still incorrectly identified and cannot be changed to Ubuntu.
I have already restarted the gateway and the Xfinity app, confirmed the server is online, renamed the device, changed its device type, and temporarily disabled IPv6. The device still appears normally under connected devices but remains missing from the port forwarding list.
I need to forward UDP port to my inet address.
Could Xfinity support refresh or repair the port forwarding device inventory for my gateway?
I also noticed that users with similar port forwarding issues were asked to send a direct message to the Xfinity Support team. However, I cannot find a Direct Message button anywhere on the forum. Could someone please explain how I can contact the support team privately?
Thank you.
EG
Expert
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119.2K Messages
19 hours ago
Concern moved here to the Customer Service help section for greater exposure to Comcast corporate employees (The Digital Care Team) for assistance.
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EG
Expert
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119.2K Messages
19 hours ago
@kl2056
Be advised that sending an unrequested direct message to the support team is a violation of their forum guidelines. It may get ignored.
Please see this post about direct messaging the support team;
https://forums.xfinity.com/conversations/getting-started/direct-message/6445fb0eb9339b2013e8ff9c?commentId=6446bf50b9339b2013e93478
A representative will reply to you here shortly.
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XfinityRichard
Official Employee
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3.4K Messages
19 hours ago
That's correct, @kl2056 . If your Ubuntu 24.04 server is configured with a static IP address at the operating system level, it may not appear in the device list for port forwarding within the Xfinity app. The app typically requires the device to obtain its IP address through DHCP before it can be selected for port forwarding.
Please try the following steps:
Switch the server to DHCP
Update your Ubuntu network settings so the server receives its IP address automatically via DHCP instead of using a manually assigned static IP.
Remove the device from the Xfinity app
In the Xfinity app, select the device and choose Forget Device (if available).
Disconnect the Ethernet cable from the server.
Restart the equipment
Reboot the Xfinity Gateway.
Restart the Ubuntu server.
Reconnect the server
Plug the Ethernet cable back in and allow the server to come online.
Wait for the device to appear in the Xfinity app and receive a dynamically assigned IPv4 address.
Set up port forwarding
Once the device is visible in the app, try configuring the desired port forwarding rule again.
If the server still does not appear after completing these steps, please let us know which Xfinity Gateway model you're using and whether the server is connected via Ethernet or Wi-Fi, and we can continue troubleshooting. 💙
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