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Information Regarding xFi and Third-Party WiFi Extenders, Access Points and Side-Car Routers

Official Employee

Information Regarding xFi and Third-Party WiFi Extenders, Access Points and Side-Car Routers

We recently had an issue where xFi was showing a large volume of connected devices and subsequently generating a large volume of "New Device Connected" notifications for customers with third-party extenders, access points, and/or side-car routers connected to their network. We apologize to those that were impacted by this.

 

The reason for these "new devices" appearing in xFi is due to how some of the third-party access points report the connecting device information back to the xFi Gateway. In many instances, they create a new virtual MAC address (the unique identifier of a connected device) for each connection - even for those device that have previously connected.

 

We have implemented a change that should minimize the impact of these connected devices. In addition, we are looking into ways to implement more robust device intelligence tools for device identification.

 

As we work to continually improve the xFi experience, please be advised that more complex network setups (defined by additional access points, switches, virtual machines, etc.) may potentially impact how devices connected to your network appear in xFi.





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Regular Visitor

Re: Information Regarding xFi and Third-Party WiFi Extenders, Access Points and Side-Car Routers

Hi. I have that problem -- my xFi has reported dozens of "new device connected" alerts over the past month, and they are NOT my devices.

 

However, I do NOT have an extender, or other wifi access points, or side-car routers on my network. My only active router is the XB6 (Arris TG3482G) from Xfinity, and my xfinitywifi is disabled.

 

For many of these Phantom / Intruder Devices, xFi says:

  • is connected to MyCoolNetwork     <--  connected to my WiFi 
  • connected with a cable    <-- yet not connecting by WiFi
  • wired device
  • connected to your Gateway with a cable
  • Connection Type:  Ethernet
  • Access Point:  Wireless Gateway

See screenshots below.

 

Also:

  • These devices never get an IP Address, and do not appear on a LAN scan.
  • They always disconnect within a minute or so, yet remain on my Devices list, under "Not Connected".
  • Some have no Manufacturer.
  • Some have very strange MAC addresses (000100000000, 000000000032, 0000000001D0).
  • Changing my WiFi password did not block these phantom/intruder devices.

Of course this is all very annoying. But it's also extremely concerning -- I want to know if my netowrk has been hacked. What is going on here?? 

 

 20180220c2.jpg  20180220c.jpg

Official Employee

Re: Information Regarding xFi and Third-Party WiFi Extenders, Access Points and Side-Car Routers

tex335, I have escalated this to the engineering team for further investigation. I will let you know when I have an update for you. 

 





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