Skip to main content

    Support

    Offers

U
user_a7c6df
1st Topic
1st Reply
1st Like

Visitor

 • 

6 Messages

Friday, September 23rd, 2022 12:51 AM

Closed

ARRIS GATEWAY

Setting up a new modem from xfinity and before I has connected any devices there were 5 devices by the name CTDI CMTX
And had the icon of a router I've been having problems ever since saying my smartphone is connected when I'm not even home also it renames the devices connected as I have a Samsung a53 and it renamed the device to SWDK3560 and I wastnt even connected to the network yet. Also my wife's iPhone connected to the gate way at 3am and she her device wasn't even near the area I mean she was at least a few miles away so Comcast seems to do nothing about my situation but tell me I need new modem. Got the new modem and same thing happened. Please let me know what I can do to fix this it's a bit of  a hassle and I feel not secured enough I've tried VPN and it doesn't seem to stay on and random settings are always being changed. I'm in need of some serious help.. 

Question

 • 

Updated 

2 years ago

1.9K

7

Was this helpful?

CCTambrey

Gold Problem Solver

 • 

3.4K Messages

3 years ago

Hello @user_a7c6df! Thanks for reaching out to us here for support. This definitely sounds like a strange issue and I would love to take a closer look from our end to see what we can do to make this right. Please send us a DM with your first/last name and service address, so we can help. 

To send a Direct Message, please click on the chat icon on the top right of this page, next to the bell. Make sure to send the message to our singular handle "Xfinity Support" and we will get back to you ASAP.

0

user_83d7a5

Visitor

 • 

1 Message

3 years ago

Also having this issue - what was solution? 

0

user_1731db

Visitor

 • 

1 Message

3 years ago

My xfinity app just notified me that 4 new such devices connected to my network. I tried pausing one and was not allowed to do so. I added it to my unknown devices group and paused it and and now my xFi app shows that my Gateway is Offline but when I access my gateway locally, it all seems to be fine.

0

0

user_a7c6df

Visitor

 • 

6 Messages

3 years ago

I recently just upgraded the modem and my speed package the operator  Professionally assured me that this wouldn't happen again anShe even gave me a $25 bill credit which didn't help much because as soon as I got the new modem I got hacked again oh my God it hacked again with the same exact devices CmBTX and their device bases we're logged on  the company is out of Texas and they make CT machines for the hospitals and doctors office.

1

0

XfinityRichard

Official Employee

 • 

1.7K Messages

Hi there @user_a7c6df Thank you so much for your time and patience today. I'm very sorry for the inconvience you are going through. Were here to assist you, if you like to DM us your full first and last name along with your full service address so that I can assist you further.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

3 years ago

0

user_58d1db

Visitor

 • 

1 Message

2 years ago

I also just went and got a new router and the same issue. 5 I don’t know connected. 

3

0

XfinityDilary

Official Employee

 • 

2.1K Messages

Hey, @user_58d1db! Thanks for your comment. I'm sorry to hear you are experiencing a similar issue. I'd be happy to help troubleshoot and get to the bottom of this. Are you currently renting a modem from us or using your own? 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

2 years ago

0

user_a7c6df

Visitor

 • 

6 Messages

@user_58d1db​ I've returned my modem three times and same thing happened same devices it's so frustrating all my devices OS seemed to be recoded and all my apps seem to modified.. is that problem happened with you or is it just me?

2 years ago

0

user_a7c6df

Visitor

 • 

6 Messages

im going thru the same exact stuff.. ive got screen shoots for days... 

2 years ago

0

user_147ecf

Visitor

 • 

3 Messages

2 years ago

Similar situation here - three unknown  devices connected during the activation process…  except I was able to pause the CTDI devices.   Did you ever find out what was going on with the unknown devices?? Thx. 

4

0

CCLamont

Problem Solver

 • 

519 Messages

Hey @user_147ecf I am here and will investigate. I replied back to your peer to peer message. 

I no longer work for Comcast.

2 years ago

0

user_a7c6df

Visitor

 • 

6 Messages

@user_147ecf​ never found out xfinity kept giving me the texas two step around my question and transferred. Me back and forth to Comcast home security then back to the internet department. Their are a lot of cloned devices that have signed on to my gateway claiming to be my phone but are labeled SWDK3009. It's getting frustrating all my devices seem like they are being monitored. Instead of the xfi giving me the option to monitor my devices it's more like an excuse for them to monitor me. Too much weird connection errors that don't make since. And my connection was labeled CTDI_CMTX they never could yell me what it was..

2 years ago

0

user_a7c6df

Visitor

 • 

6 Messages

I CANT DO THIS ANYMORE I CANT EVE TRUST MY OWN XFINITY HOME SECURITY SYSTEM EVERYTHING IS DELAYED SOMETHINGS GOTTA GIVE.. i DONT EVEN SIGN ON WITH MY SMART PHONE ANYMORE YET IT SAYS I DO DURRING THE TIMES IM ASLEEEP... SMH.. I WAS TOLD THE ITS CALLED A POINT OF ENTRY I DON'T KNOW HOW BUT THIS IS GETTING REDICULOUS. IM PAYING ALL THIS MONEY AND FOR WHAT JUST FOR MY COMPUTERS TO BE UNSAFE AND MY IDENTITY TO BE STOLEN.  NO THANK U .. MY ADDRESS IS [Edited: personal information] YAL KNOW HOW TO GET AHOLD OF ME

(edited)

2 years ago

0

XfinityJorge

Official Employee

 • 

2K Messages

Hello there @user_a7c6df thank you so much for contacting our Xfinity Support Team via our Forums. We are sorry you are having issues with your Xfinity Home services, and we are here to help. In order to get started, can you please send me a private message to Xfinity Support with your full name and full address by clicking the chat icon in the top right?

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

2 years ago

0

user_dcb18c

Visitor

 • 

1 Message

2 years ago

I am having the exact same issue here, multiple devices trying to join my network. This just started happening a few weeks after I installed a new xfinity router (the white one). I spent 2+ hours on the phone with xfinity, was disconnected twice. Told me to make up a new user name and password, which I did, still hasn’t stopped the issue as another 15 new devices were added. 

it says: “A device called CTDI CMTX just connected to your home network for the first time”

Does anyone have any idea what this is? Xfinity has been absolutely of zero help

3

0

RB_MD

Contributor

 • 

20 Messages

@user_dcb18c​ 

I'd try getting a MOCA POE filter if you don't have one already. Normally they're installed at your point of service entry, but for a test, you could just screw it onto the back of your gateway and see if it helps.

check this thread for more info:
Ctdi cmtx listed 4 x

(edited)

2 years ago

0

user_8998c6

Visitor

 • 

1 Message

Can installation techs code or would be able to override the modems?  There's a password name all that on the back of box. Why? My tech went on his phone and made up a name and temp password he said to activate the system. I thought I would be required to do that on my xfinity app not the techs apple phone. And i hadna connected apple device on my app and I dont have apple. Is this the normal setup procedure? 

2 years ago

0

CCChe

Official Employee

 • 

6.9K Messages

That's a great question @user_8998c6. Was there tech there for an installation? If so, there is a way that they can help while there at your home. If you wish to view or change the Wi-Fi Name and password that were set up by the technician, you can do so by following the steps listed here. 

I no longer work for Comcast.

2 years ago

0

forum icon

New to the Community?

Start Here