[PLUG] Is there a DNS cache in the Comcast modem?

Chuck Hast wchast at gmail.com
Tue Sep 19 19:21:11 UTC 2017


They are all useless and in this country they have taken over most of the
network access in this country.

I now live in Oklahoma City, the two options I had were AT&T and Cox. I
tried AT&T first as I have been using them as my cell provider for years and
they have done me well, but AT&T Uverse turned out to be a real turkey.

The DNS was HARDWIRED in the router, i.e. there was no way of changing
it, the reason was that if you used their video or phone services the URL's
for
those services are not public so public DNS will not work. BUT I told them I
am NOT using your services just your network connection, I was told they
were
sorry but that was how all of the routers were set up, needless to say,
next day
that one was gone, I am now using Cox, at least I can use my own DNS
servers,
the router does have an internal DNS, which sooner or later I will replace
with
a RPi and my own DNS. But right now it at least works. I have replaced their
DNS servers with my prefered ones, so I am not having to go through theirs.

I would like to see more options, but they just are not there. Cox gets slow
when it is loaded up in the evenings, guess I will sooner or later break
down
and pay the extra $10 for the static IP and the better speed during high
load.



On Tue, Sep 19, 2017 at 1:41 PM, Tomas Kuchta <tomas.kuchta.lists at gmail.com>
wrote:

> Sadly, it exactly (I mean exactly) documents any of my 10-ish calls with
> the C company over the years.
>
> The only rational way, I can explain it - C is like a cat - trying to be
> cute when you feed it, but you/I/we are its pet not the other way around.
> It will do nothing for you in exchange for the food beside showing up. If
> it does not like your food it will move to a neighbor.
>
> Disclaimer: I have nothing against cats. Humanity obviously need them to
> feel good, and we are not that great pets to them.
>
> T
>
> On Sep 19, 2017 7:33 AM, "Michael Barnes" <barnmichael at gmail.com> wrote:
>
> > This documents about 36 wasted minutes of your life you will never get
> > back. Sorry for your loss.
> >
> >
> > On Mon, Sep 18, 2017 at 10:16 PM, Denis Heidtmann <
> > denis.heidtmann at gmail.com
> > > wrote:
> >
> > > Answered by Comcast chat:
> > >
> > > I asked the question in my opening statement.  Here is the dialog.
> Your
> > > task is to tell me what the answer is.
> > >
> > > Harpreet 11:40 AM Let me check
> > >
> > > Harpreet 11:41 AM Just for the account security, May I have the
> complete
> > > service address along with the zip code ?
> > > ...
> > >
> > > Harpreet 11:42 AM Perfect.Thank you for that information.
> > >
> > > Harpreet 11:43 AM Denis, are you getting any error while you are using
> > your
> > > internet?
> > >
> > > Denis 11:44 AM Not at present.
> > >
> > > Harpreet 11:45 AM Okay no worries, '
> > >
> > > Harpreet 11:45 AM for your satisfaction
> > >
> > > Harpreet 11:45 AM I can do some troubleshooting for you internet
> > >
> > > Harpreet 11:46 AM I would need to send a refresh signal to reactivate
> > your
> > > modem to resynchronize your modem to our system. Please allow me a
> minute
> > > or 2 to complete the process.
> > >
> > > Denis 11:47 AM Please do not do that.
> > >
> > > Harpreet 11:47 AM Sure
> > >
> > > Denis 11:47 AM Trouble shooting is not required.
> > >
> > > Denis 11:47 AM Can you answer my question?
> > >
> > > Denis 11:48 AM What does resynchronize mean?
> > >
> > > Harpreet 11:49 AM Denis, sure
> > >
> > > Harpreet 11:49 AM Let me flush your DNS
> > >
> > > Harpreet 11:49 AM let me check
> > >
> > > Harpreet 11:49 AM Please stay connected while I am still working on it
> > >
> > > Denis 11:50 AM So one answer to my question is Yes, the Arris TG1268T
> > does
> > > have a DNS cache?
> > >
> > > Harpreet 11:50 AM yes
> > >
> > > Denis 11:51 AM Good to know. Now, for future reference, is flushing the
> > > cache something I can do, or must I contact Comcast to do that?
> > >
> > > Harpreet 11:52 AM Denis, you can do it your self
> > >
> > > Denis 11:52 AM Wonderful!
> > >
> > > Harpreet 11:52 AM You're welcome.
> > >
> > > Denis 11:54 AM How can I do it? Is there a choice in the browser window
> > in
> > > the modem?
> > >
> > > Harpreet 11:54 AM I will share the steps with you
> > >
> > > Denis 11:55 AM Thank you.
> > >
> > > Harpreet 11:55 AM Please follow the link I will provide you to flush
> the
> > > DNS
> > >
> > > Harpreet 11:55 AM You're welcome.
> > >
> > > 11:57 AM http://www.wikihow.com/Flush-DNS
> > >
> > > Harpreet 11:57 AM Please follow the link
> > >
> > > Denis 11:59 AM I do not think it has instructions for Linux.
> > >
> > > Harpreet 11:59 AM no worries
> > >
> > > 11:59 AM Let me check for the Linux
> > >
> > > Harpreet 12:00 PM
> > > https://www.cyberciti.biz/faq/rhel-debian-ubuntu-flush-
> clear-dns-cache/
> > >
> > > Harpreet 12:00 PM Please follow the link
> > >
> > > Denis 12:03 PM OK. This appears to have instructions for flushing the
> > cache
> > > in my computer, not in the modem. Is this correct? If so, we get back
> to
> > > the question of is there a DNS cache in the modem?
> > >
> > > Harpreet 12:06 PM Denis, if you want to flush your Modem's DNS I would
> > > request you please directly connect your device to the modem equipment
> > > using an Ethernet Cord
> > >
> > > Harpreet 12:07 PM Just for the confirmation, there is not DNS in the
> > modem
> > >
> > > Harpreet 12:07 PM this is a part of system
> > >
> > > Harpreet 12:08 PM it is Domain Name Server
> > >
> > > Denis 12:10 PM OK. I know what DNS stands for. Local systems often
> > maintain
> > > a local cache of recently used sites. My original question was does my
> > > modem have such a cache. Now is seems your answer is No, it does not.
> Do
> > I
> > > understand you correctly?
> > >
> > > Harpreet 12:11 PM yes, you are
> > >
> > > Harpreet 12:14 PM Denis, I just wanted to clear you with the full of
> > > details about the DNS
> > >
> > > Harpreet 12:14 PM that is why it took time
> > >
> > > Denis 12:15 PM Thank you for the education.
> > >
> > > Harpreet 12:15 PM You are most welcome
> > >
> > > Harpreet 12:16 PM I hope we have resolved all of your concern to your
> > > satisfaction today?
> > >
> > > Denis 12:16 PM I hope so.
> > >
> > > user Denis_ has left room
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-- 

Chuck Hast  -- KP4DJT --
I can do all things through Christ which strengtheneth me.
Ph 4:13 KJV
Todo lo puedo en Cristo que me fortalece.
Fil 4:13 RVR1960



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