#CableModem

The bootloop of Arris TG2492S cable modem stopped, when I disabled ntp servers (disabled by default).

The bootloop stops by unplugging the F-connector/antenna cable.

Earlier I resolved the bootloop with factory reset.

Related yhteiso.elisa.fi/laajakaista-7

#elisa #cableModem #debugging #bugs #EuroDOCSIS

Kevin Bowen (has moved) :xfce:kevinbowen@fosstodon.org
2025-03-02

@isagalaev

I had to replace mine last year & settled on an Arris SBG8300.

Aside from a little tinkering with IPv6, it's just been a set-and-forget appliance for me. Our home network is very small(~8 devices); but, there's plenty of room to grow it with this box should the need arise.

I was mainly concerned with it being Xfinity/Comcast compatible for our apt building. Ended up just heading down to our local Best Buy to pick it up.

Good luck!

surfboard.com/products/wi-fi-c

#HomeLab #CableModem

Victoria (K8VSY) (she/her)k8vsy@mastodon.radio
2025-03-01

I wonder, is there a cable modem with an SFP+ port available on the market yet?

I didn't immediately see anything from a web search...

#CableModem #Internet #network #networking #ubiquiti #ubiquity #Spectrum #Modems #LAN #WAN #Cable #Modem

2025-01-31

I wish Spectrum Cable were on here so I could blast their butts. I finally unpacked their suitcase-sized box with a "new, faster" modem today. After taking the shrinkwrap off, I found that mine was pre-broken. 🤬 The box was the size of a suitcase, & looked perfect when FedEx delivered it. It was also mostly empty space. I'm really glad I don't work for them anymore. We also need *more choices* in ISPs. #SpectrumCable #cableModem #Spectrum #Charter #busted #telcos #cable #ISPs #tech

A freshly unwrapped Spectrum cable modem.  The shrinkwrap is at the bottom of the picture.  The outside of the modem is black plastic with air holes at top left.  At the bottom right, the cable company name, Spectrum, is stamped into the plastic.  A semi-circular crack extends from the bottom right corner of the modem, up into the name, and then curves back down to the left, back below the name.The giant box delivered by FedEx containing the new, yet physically broken cable modem (on top of the box).  The box is on my coffee table.  The box also contained some pieces of paper, 2 small cables shrink-wrapped together, and a power adapter.  Below the box on a shelf is the tape measure I used to measure the box before taking out all the stuff.  It measured about 2112 cubic inches.  I imagine the modem was broken before it was shrink-wrapped, but ¯⁠\⁠_⁠(⁠ツ⁠)⁠_⁠/⁠¯
2025-01-17

@nixCraft #DOCSIS #HFC #CableModem

It took a SINGLE copper wire surrounded by dielectric and a wire mesh which was originally designed to carry analog audio signals. Now with #DOCSIS4 we can get 10GBps of degrees and ~7GBps ingress. That same Layer 1 single wire can now care thousands of audio streams, video, data, etc

2025-01-04

TFW you check your cable modem and see it's been up for 212 days and has posted 98.9 million corrected errors and 278K uncorrected errors.

Totally normal, right?

#cableModem #cableInternet

Lord Kusuriya ​:tower:​kusuriya@hackers.town
2024-11-22

TIL Ubiquiti seems to be the only people that make a rack mount cable modem...

#homelab #networking #homenetwork #cablemodem

Lord Kusuriya ​:tower:​kusuriya@hackers.town
2024-11-21

TIL Ubiquiti seems to be the only people that make a rack mount cable modem...

#homelab #networking #homenetwork #cablemodem

2024-11-09

Very possible that I fry my cable modem here lol
#hardwarehacking #cablemodem #flashdump

Hitron-brand cable modem with plastic cover removed. Clip connected to SPI flash, with wires trailing to a bi-directional level shifter and an FT232H breakout board
2024-06-04

Great blog post going into how the author discovered they could reach any Cox account/modem remotely and change settings.
samcurry.net/hacking-millions- #infosec #vulnerability #cablemodem #coxcommunications

2024-03-23

Took a bunch of jiggling and jostling, but my new cable modem is in, provisioned, and a speedtest shows double the bandwidth of the old modem. Also, it is BLUE.

BLLLLUUUUUUUEEEEEEEE.

#cablemodem #blueleds #bright

cable modem with hilariously bright BLUE LIGHT
2023-11-06

So, last Wednesday from 18:00 through to early Saturday morning our #virginMedia #cableModem #broadband was pretty much unusable. 400ms ping times and 80-100% packetloss. All day Saturday it was fine, then crapped out again Sunday morning, at which point I booked an engineer visit for today.

As soon as that was booked the connection went back to normal and stayed that way 🙄

Doubtless engineer will turn up, declare No Fault Found and charge us £25 for the privilege

2023-08-11

True story. Once upon a time, a website that shall remain nameless, for reasons that are soon going to be evident, suspended me for "hacking."

Oh, I'll also mention that this site is a site for software engineers. Yeah, that's relevant.

I had not done any hacking. So I contacted them. They said that they could clearly see in their logs that I had been hacking them, but they could not tell me what it is they actually saw, because that would allow me to hack them some more. They thought they were playing some sort of four-dimensional chess with a mastermind.

I was angry... but then I relaxed, and I talked to my cable modem. I said:

"Yo! Could you renegotiate a new address on the Internet?"

It replied:

"No trouble, boss!"

It renegotiated, got a new address, and then... I was able to access the site again.

:catthinking:

So:

1. These idiots used a technique that could easily be circumvented.

2. Why the hell did they not suspend *my login?????* I could use the site just as well as before.

:headache:

====

Bonus storytelling round!!!

I can imagine this being the plot of some #shitty #Hollywood show.

Prosecution: "Member of the jury, I'd like to point out that the defendant asked his modem to... [dramatic pause]... negotiate an IP address!!!!!! [Points to the defendant dramatically.]"

Audience: [Gasps and clutches the pearls.]

Judge: "Negotiating an IP address is so vile, that I find you guilty on all charges, irrevocably, and in perpetuity. TO THE CROCODILES!!!!!!"

Jury: "What's our role in all this?"

Judge: "Fuck all! I decide everything, hahahahaha!"

#CableModem #IPNegotiation #SoftwareEngineers #SoftwareEngineering #FourDimensionalChess #PearlClutching #Law #HollywoodLaw

2023-05-01

My weekend project - labeling and upgrading all the #RG59 cables and wall plates in our 65 year old house. Ran a brand new, shorter, and more direct cable to our #CableModem and the signal is vastly improved as you can see in the second picture. Venturing into in the dusty crawl space was well worth it! #HomeInternet #DOCSIS #cough #WhoInstalledThis #cabling #sneeze

A standard U.S. wall plate with a cable TV connector in the center. The plate has a printed label sticker on it that says “CAB-6”Two tables of DOCSIS cable modem channel statistics, labeled BEFORE and AFTER. The before table has power and signal-to-noise numbers that are all over. The corrected and uncorrected error columns also widely vary and show MILLIONS of errors, no channel is spared. The after table shows much more consistent signal levels and ZERO errors in every channel save one.
Cenobyte :abunhdowohop:cenobyte@mastodon.thirring.org
2023-01-14

Have an interesting #networking problem. Got a new xb87 cable modem. My configuration has the modem in bridge mode. Two separate networks with web servers on each one. Externally everything works. Internally the two networks can't talk to each other via the public ip address.
(one is thirring.org, one is tech-tips.ca) This worked fine with the previous modem. #ISP #Shaw #cablemodem Anyone ever see anything like this?

Dustin [BusySignal-KE2EFX]dustinfinn@infosec.exchange
2022-12-15

Does anyone have a REAL solid and CLEAR break out of what Cable Modem DOCSIS 2 and 3 Signals should be for upstream and downstream?

What "Corrected" and "UnCorrectables" are ?

#ISP #CableModem #DOCSIS #Internet #Support

2020-01-14

‘Cable Haunt’ vulnerability exposes 200 million cable modem users - A fortnight in to 2020 and we have the first security flaw to be given its own name: Cable Haunt -... more: nakedsecurity.sophos.com/2020/ #securitythreats #vulnerability #bufferflaws #cablehaunt #cablemodem #lyrebirds #broadcom #flaw

2020-01-13

Cable Haunt: Hundreds of millions of cable modems may be vulnerable to hijacking attack - Researchers warn that your cable modem might be vulnerable to hijacking, due to a critical securit... more: grahamcluley.com/cable-haunt-c #vulnerability #cablemodem #firmware #malware

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