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This is one of several good reason to buy and use your own modem. The security of sharing your service with others is questionable, for starters, and Cox does

This is one of several good reason to buy and use your own modem. The security of sharing your service with others is questionable, for starters, and Cox does not have a good security history. Every "reset" of the modem (where they remotely check in on it) will turn off your preferences, and many people have reported disabling this wifi "sharing" only to come back to see it re-enabled. Cox, or any ISP, having access to your internal network by virtue of having administrative access to your modem / NAT router is problematic. People can be bought or are sometimes evil. People click on links and get compromised. It's better that they stay outside of your home network, where they belong. Cox rents this modem / router device for $12 a month. That's $144 a year. A high end DOCSIS 3.1 modem would pay for itself in less than a year, plus you can get a NAT router / wifi access point of your choosing, keeping the function of the two devices separate. This means that if you want to upgrade wifi later, you're not paying to replace everything. Or if there's a security issue that the vendor isn't going to fix, or is in hardware, like the Intel Puma chipsets, you're only replacing one of the devices. This is true of all ISPs, really.

AdmiralAsshat 5y ago
Indeed. I bought my own modem and router when I last moved to a new apartment under Cox in 2017. At the time I paid $130 for a Netgear CMS500 DOCSIS 3.0 modem and a Nighthawk AC1750 router. They paid for themselves in a year, but I'm still here four years later.
mwcampbell 5y ago
How difficult is it to switch from the Cox-owned Panoramic WiFi gateway to one's own modem and router? Is it necessary to contact Cox technical support, e.g. so they can change the MAC address (or equivalent) associated with the customer's account?
- EvanDotPro 5y ago
  In my experience with Cox, you simply plug it in and it just works. It might take a little longer to initialize with a new MAC, but I've never had to call or notify them of a modem swap.
- grioghar 5y ago
  Just a heads up: if you’re asking these questions, you might want to reconsider until you understand it more. You’re going to need: A new modem A new router You’ll need to talk to Cox and give them the HFC ID and Serial number. Then, you’ll need to connect everything, and configure your router so that it’s secure. That’s a nebulous word, ‘secure,’ because my security might be different than yours, but you’ll want to make sure the router is locked down so outside attacks are avoided, and the neighborhood isn’t using your services. So, take that in consideration.
  - tolbish 5y ago
    > you’ll want to make sure the router is locked down so outside attacks are avoided, and the neighborhood isn’t using your services What are some key settings you would recommend to prevent these exact things? It's a bit challenging to grok all of the advanced router settings, and I don't think mine comes with "locked down against outside attacks" presets.
    - simcop2387 5y ago
      One of the big ones is upnp port forwarding. Your router might call it something else, but it's essentially a way for software to request a port forward from your router. This sounds alright at first but it's frequently abused to allow stuff that shouldn't be publically accessible bypass any firewall. The biggest issues with it is that it's completely unauthenticated so with the right commands sent, an attacker can cause anything to be exposed. Port forwarding alone isn't a bad thing, but the automated unauthenticated setup is just usually too much.
- lttlrck 5y ago
  They have a list of certified modems. https://www.cox.com/residential/support/cox-certified-cable-modems.html https://www.cox.com/residential/support/cox-certified-cable-... I had a bit of an issue with such a modem. It took a couple of support chats calls to get it going but it's been fine ever since. I did seem to be related to the MAC, but the expectation was that it should have just worked.
  - cbsks 5y ago
    I just got a new Motorola MB8600 modem which is on their list. I swapped modems, called support and gave them the model and MAC address. It took about 10 minutes total. Very painless.
- alexjplant 5y ago
  I had to mess with some settings [1] to get my OpenWRT router to work, but my TP-Link modem works great. [1] https://alexplant.org/post/openwrt-cox/ https://alexplant.org/post/openwrt-cox/
- encryptluks2 5y ago
  Yes, usually it is that simple. Sometimes you can just plugin the modem and switch it yourself using your browser or their mobile app.
- bendbro 5y ago
  I just bought a modem and then started service on the website. I never had their modem in my house.
dopidopHN 5y ago
Cox started giving the modem away. I pay $65/month and it came with a router that I don’t have to send back. It works fine. It’s not a “panorama gateway” tho. I’m not sharing your reservations on security or sharing your personal bandwidth. But I do share your concern over cox handling security. Ha. Are you aware of project like Althea or Helium. Or libreMesh if you want to weed out the blockchain aspect. Anyway, I was surprised how those stack seems ready to “disrupt the last mile delivery of bandwidth/broadband.” (Sorry for the use of “disrupt” )
dclusin 5y ago
It depends on the implementation details. Comcasts implementation had a separate wifi chip that was separate from the customer wifi network for its network. I remember reading some years ago some hackers managed to spoof its Mac Address to double their bandwidth with interface bonding... Found one: https://msol.io/blog/tech/how-i-doubled-my-internet-speed-with-openwrt/ https://msol.io/blog/tech/how-i-doubled-my-internet-speed-wi...

AdmiralAsshat 5y ago

Indeed. I bought my own modem and router when I last moved to a new apartment under Cox in 2017. At the time I paid $130 for a Netgear CMS500 DOCSIS 3.0 modem and a Nighthawk AC1750 router. They paid for themselves in a year, but I'm still here four years later.

mwcampbell 5y ago

How difficult is it to switch from the Cox-owned Panoramic WiFi gateway to one's own modem and router? Is it necessary to contact Cox technical support, e.g. so they can change the MAC address (or equivalent) associated with the customer's account?

EvanDotPro 5y ago
In my experience with Cox, you simply plug it in and it just works. It might take a little longer to initialize with a new MAC, but I've never had to call or notify them of a modem swap.
grioghar 5y ago
Just a heads up: if you’re asking these questions, you might want to reconsider until you understand it more. You’re going to need: A new modem A new router You’ll need to talk to Cox and give them the HFC ID and Serial number. Then, you’ll need to connect everything, and configure your router so that it’s secure. That’s a nebulous word, ‘secure,’ because my security might be different than yours, but you’ll want to make sure the router is locked down so outside attacks are avoided, and the neighborhood isn’t using your services. So, take that in consideration.
- tolbish 5y ago
  > you’ll want to make sure the router is locked down so outside attacks are avoided, and the neighborhood isn’t using your services What are some key settings you would recommend to prevent these exact things? It's a bit challenging to grok all of the advanced router settings, and I don't think mine comes with "locked down against outside attacks" presets.
  - simcop2387 5y ago
    One of the big ones is upnp port forwarding. Your router might call it something else, but it's essentially a way for software to request a port forward from your router. This sounds alright at first but it's frequently abused to allow stuff that shouldn't be publically accessible bypass any firewall. The biggest issues with it is that it's completely unauthenticated so with the right commands sent, an attacker can cause anything to be exposed. Port forwarding alone isn't a bad thing, but the automated unauthenticated setup is just usually too much.
lttlrck 5y ago
They have a list of certified modems. https://www.cox.com/residential/support/cox-certified-cable-modems.html https://www.cox.com/residential/support/cox-certified-cable-... I had a bit of an issue with such a modem. It took a couple of support chats calls to get it going but it's been fine ever since. I did seem to be related to the MAC, but the expectation was that it should have just worked.
- cbsks 5y ago
  I just got a new Motorola MB8600 modem which is on their list. I swapped modems, called support and gave them the model and MAC address. It took about 10 minutes total. Very painless.
alexjplant 5y ago
I had to mess with some settings [1] to get my OpenWRT router to work, but my TP-Link modem works great. [1] https://alexplant.org/post/openwrt-cox/ https://alexplant.org/post/openwrt-cox/
encryptluks2 5y ago
Yes, usually it is that simple. Sometimes you can just plugin the modem and switch it yourself using your browser or their mobile app.
bendbro 5y ago
I just bought a modem and then started service on the website. I never had their modem in my house.

dopidopHN 5y ago

Cox started giving the modem away. I pay $65/month and it came with a router that I don’t have to send back. It works fine. It’s not a “panorama gateway” tho. I’m not sharing your reservations on security or sharing your personal bandwidth. But I do share your concern over cox handling security. Ha. Are you aware of project like Althea or Helium. Or libreMesh if you want to weed out the blockchain aspect. Anyway, I was surprised how those stack seems ready to “disrupt the last mile delivery of bandwidth/broadband.” (Sorry for the use of “disrupt” )

dclusin 5y ago

It depends on the implementation details. Comcasts implementation had a separate wifi chip that was separate from the customer wifi network for its network. I remember reading some years ago some hackers managed to spoof its Mac Address to double their bandwidth with interface bonding... Found one: https://msol.io/blog/tech/how-i-doubled-my-internet-speed-with-openwrt/ https://msol.io/blog/tech/how-i-doubled-my-internet-speed-wi...