I think generally you don't get a choice when it comes to DOCSIS equipment. You can't just connect up your own (or at least no to Virgin Media's network)
AT&T U-verse I couldn't bring my own modem, and I understand that they're not a DOCSIS network either.
Not true. I have multiple business locations using customer owned surfboards.
Might be a requirement for static addresses but it's not for business service in general.
If you don't have a static IP with Comcast Business it makes it awfully hard to run a mail server, but then you can indeed use your own cable modem.
Some folks smarter than myself figured out how to mimic the ONT handshakes or some such that they could use their own devices. IIRC, they were pulling the certs from the ATT box. ATT then came in and installed new stuff at the station to not allow that anymore. I don't remember all the technical details, but that's what I found when I spent an hour or so researching how to get rid of their awful box. In short, you can't...and even if you manage to, it won't be for long.
https://www.dslreports.com/forum/r32839785-AT-T-Fiber-Gatewa...
> No, it's when they port you over to a new splitter in your neighborhood's PFP cabinet seems to be what I'm following. Then you will be connected to a different OLT port at the CO(central office) that supports XGS-PON as well as standard GPON. > > Older Gateways will work on the newer OLT gear. But the 10Gbps XGS-PON will only work on the newer OLT ports. This newer port has an added management layer to support 10Gbps which needs authentication on top of the certs needed by both GPON and XGS-PON.
That's good to know. They already dragged their feet getting fiber available in my area (fiber laid 13 years before service was available). Hopefully they'll drag their feet with this "upgrade" too.
Also, in many cases there is a specific that the "modem" listens on, serving a web interface that allows switching back to "router" mode. This also wouldn't be possible with a "pure" modem (as it shouldn't have any concept of the IP layer).
Though now that I’m thinking of it, are you sure it uses IP? It’s not as if they can’t use other layers.
I can't imagine this is different else where so it's likely the replying comment above yours is incorrect.
Source: I was previously a network engineer for a national Telco.
Other sources: DOCSIS 3.0 registration info: https://volpefirm.com/docsis-3-0-cable-modem-registration/
Only the owner of a given MAC OUI is able to create a certificate covering MACs under it that will be accepted by the CMTS.
Though I believe it's since changed, my last interaction with DOCSIS was 4-5 years ago. I seem to recall there's a captive portal involved now but previously it was solely MAC.
I have always been able to view the management page for my Arris/Motorola Surfboard modems.
> I'm guessing a workaround is to use a 3rd party router and block traffic to 192.168.100.1 which is the IP of the management UI when in modem only mode, presumably the external IP can still be retrieved in modem only mode
> If it's still active in modem-only mode, it essentially precludes use of these routers entirely for any sensitive comms.
> The web interface is still available in bridge mode with Liberty Global's Arris modems, yes.
> Just tried it on my device in modem-mode and it does indeed still expose the snmpGet endpoint. As suggested above, i've firewalled all traffic to 192.168.100.1 on my own firewall.
[1] https://www.reddit.com/r/netsec/comments/pnzs0n/silently_unm...
Although as of a few weeks ago, WOW has announced bandwidth caps, so I have to rescind my former glowing recommendation. Le sigh.
Long story short, their was tons of regional providers, they were brought up by one of two players which basically devided the country into being served by either NTL or Telewest, NTL and Telewest then merged becoming NTL:Telewest, who then brought Virgin Mobile (an MVNO in the UK) to become a 4 way provider (TV, Phone, Internet and now Mobile). Virgin Media are now owned by a US conpany, Liberty Global iirc)
Neither NTL nor Telewest allow consumer owned equipment onto their cable internet network, heck I remember Telewest only authing one consumer device mac address to be connected to their modems at the start of their cable internet rollout (so if you wanted to use your own router conencted to the modem, you would either have to give Telewest the mac address of the router or set the mac address of the WAN port to the mac address of the computer that was initially conencted to their network (which was the quickest option, you could never get them to swap it instantly over the phone, but could doing business hours over telewests newsgroups as their engineers would hang out their, which used to be the quickest way to get your line serviced if their was ever an issue), a practice telewest did drop before they merged with NTL. NTL never had such a policy iirc, but I only lived in an NTL area for a couple of years).
Their modem secuirty has never been "great". For the longest time (since creation till only a few years ago) you were able to get free internet if you cloned the mac address of someone elses modem but used it in a differnt area, mac addresses that could be captured by any modem (provisioned or not) connected to the network. So there used to be mac swapping forums where X would scan and log their area can trade with Y who would to the same in theirs (used to be handy when they had "fair usage" trottling enabled, used your download limit for the day, swap your mac and get a new limit, or if you wanted to run a 2nd/3rd/4th modem, but that would be naughty... So I never did such a thing. IIRC: Modem cloning is still possible today, but you need to get the certs from a provisioned modem, so its not as simple as just sniffing mac address from the cable line as other modems register on the network).
Here in the UK, we have always been limited to the modem the cable company provided, which remained their property (both were often uncollected by the company when a customer left, so you could easily find old modems on ebay for pennies on the pound, which just happened to have thier unsigned firmware (and mac addresses) on SPI flash if you wished to tinker with them), which for 99% of the UK was fine, as it was common (and still is) to just used what ever device was issued to you. Atleast with ADSL/VDSL in the UK you are free to use what ever device you wanted (except for Sky, they used to be PITAs about getting the auth details to run your own modem, but once you did and aslong as your modem supported their auth (which isn't the auth used by most of the xDSL providers in the UK) you were free to use your own equipment, just "unsupported" so if you had issues on your line, it was best to connect their modem to the line before calling customer services.
Five months later I sent it off for recycling because i'd heard nothing. Two months after that they asked for it back and then charged me £80 for not having it anymore.
Never heard from them again.
BT do the same these days with their hubs (or at least were planning to, dunno if they changed their minds after the backlash), BTs excuse is to reduce electronics waste. Not that we’re going to reuse the gear themselves more that they would recycle it.
BE (before they were brought out by o2) would send you out a “cat trap” modem on the condition you returned it if you left (so they could give it to ant or customer as a cat trap) but didn’t really give a crap about the primary modem.