Gateway Mess

@flatlander3​   Thank you so much...   I don't have an xfinity box, because I don't have cable.  They wanted to give me a Flex Box but I did not wanted, considering that I have issues right now, and did not want to complicate things more than they are.  Should I still get the MoCA PoE?    Please let me know before I continue reading.  :)

@user_0e11af​ Well, this is going to be your call, and it matters what you want.  If you are going to use their gear going forward, you do NEED an MoCA point of entry filter, and it can screw right to the back of your gateway for your config.  It's better if your hardware does not even have the 'feature', but they don't rent that.  All it is, is just a low pass filter that blocks the higher frequency range used by the MoCA protocol.  It won't change anything else.

Personally, I can't use their stuff for what I do.  Their gear fails my security audit, and also the security audits of places I have to work with.  This has to do with closed source software, and remote management of critical infrastructure via 3rd party, using the least secure device you own -- a phone app, and physical network isolation.

Based on your own experience, if there are 49 devices on your network, and you can see them in the first place, and even worse, control their network access right along with your neighbor, you've got a data breach.  I'd do something else.

Will an MoCA filter solve everything?  Dunno.  I don't use their gear, but that's one problem for sure.

@flatlander3​ Hi again and thank you for your help with this.  Do you think if I bought my own wireless router this would get fixed?  

@user_0e11af​ Well, the data use not showing up can be IPV6 related, so you may not be getting an IPV6 address, or getting one all the time.  I don't know if a router will change that problem in your market area or not.  That could be your end, or upstream from you, but if you want to break Xfinity's data counter, that's one way to do it.

Devices showing up on your network part?  If it doesn't have MoCA capability, you won't have stray devices showing up, and better security than you will from a flaky Xfinity rental gateway.  No public "hotspot", or hidden "security" WiFi network broadcasting from your gateway either.  No phone app to compromise depending on what you buy.

Does contracted BIOS guy scream "security" on any of these gateways?  Well no.  If you want that, you'll put in a firewall too and handle the security part yourself. It's more equipment.  That goes like this:

Internet <-> cheap cable modem <-> firewall <-> WiFi router <-> your gear.

@user_0e11af Thank you for reaching out to our Xfinity Community Forums regarding your concerns over unfamiliar devices showing up in your Xfinity app. Reading over your conversation with our Problem Solvers and Experts in this thread, I see you mentioned working with our Xfinity specialists. What steps had they already taken with you to attempt to resolve the unfamiliar device's appearance on the network? Have you already had a technician out to have a look at the exterior wiring at the location? (checking things like MoCA filters such as mentioned earlier)

Additionally, have you attempted to remove the unfamiliar devices from the Xfinity app by following the steps here to see if they return or not?