Open DNS

[meagain]

How do I setup an Xfinity UT (wifi, phone, router combo)
with "Open DNS"?

[Adam H. Kerman]

meagain <rick0....@gmail.com.spamless> wrote:

>How do I setup an Xfinity UT (wifi, phone, router combo)
>with "Open DNS"?

I don't know what "UT" means. It sounds like you have an eMTA with
built-in Wifi router. Tell us the make and model.

OpenDNS has some general guides for typical Comcast devices here:
https://support.opendns.com/hc/en-us/articles/228006547-Arris-Motorola-Router-Configuration-Comcast-XFinity-Time-Warner-etc-

Some of them attempt to prevent the subscriber from changing their DNS server.

I use an eMTA without a built-in router. Then there's no trouble changing
DNS.

[John Weiss]

On 06/01/17 10:55, meagain wrote:
> How do I setup an Xfinity UT (wifi, phone, router combo)
> with "Open DNS"?

What level of OpenDNS do you have?

You can simply configure your DNS servers in Windows and/or your router.

In Windows:

Start | Network Connections | Adapter Options |
[WiFi or Ethernet or both] | Properties | TCP/IPv4 | Properties |
Use the following DNS Server addresses

Specify 2 of the OpenDNS resolvers:

208.67.222.222 (resolver1.opendns.com)
208.67.220.220 (resolver2.opendns.com)
208.67.222.220 (resolver3.opendns.com)
208.67.220.222 (resolver4.opendns.com)

or for their servers with "Family Shield" porn blocker:


208.67.222.123 (resolver1-fs.opendns.com)
208.67.220.123 (resolver2-fs.opendns.com)


OK

Then to TCP/IPv6:

2620:0:ccc::2
2620:0:ccd::2

OK/Save and reboot.

IIRC, Win will use those DNS servers, regardless of what is set in your
router or EMTA. However, you can make sure they are used for all
computers in your network by setting those DNS servers in the router
and/or EMTA Setup pages.

[John Weiss]

OOn 06/01/17 11:27, John Weiss wrote:
> On 06/01/17 10:55, meagain wrote:
>> How do I setup an Xfinity UT (wifi, phone, router combo)
>> with "Open DNS"?
>
> What level of OpenDNS do you have?

. . .

Also, at least one source says you should first set up an account at
OpenDNS if you use the Family Shield:
https://www.howtogeek.com/201312/how-to-use-opendns-on-your-router-pc-tablet-or-smartphone/

First go to OpenDNS.com and create an account for their parental
controls. We choose OpenDNS Home, which takes only a few minutes to set
up and is completely free.

All they really need is some basic information, however, they may prompt
you for more. When you’re done creating an account, you will need to
confirm via the email address you provided.


To ensure it takes effect immediately after reboot, especially if you
use the Family Shield:

Clearing Your DNS Resolver Cache on Windows Clients

Open a command prompt on Windows by opening the Start menu or Start
screen, respectively, and entering “cmd” in the search box. Instead of
simply hitting “Enter” though, use “Ctrl + Shift + Enter” to open an
administrator command prompt. You will know you have administrator
privileges because it will say so in the title bar.

With the command prompt open, type “ipconfig /flushdns” (the command is
the same for both Windows 7 and Windows 8.1). You should do this on all
your Windows clients, so if your kids each have a computer, you want to
flush their DNS caches.

[VanguardLH]

meagain <rick0....@gmail.com> wrote:

> How do I setup an Xfinity UT (wifi, phone, router combo)
> with "Open DNS"?

To do what? Use as your DNS server? Or to use as a DDNS (dynamic DNS)
to have a hostname assigned to whatever is the current IP address for
your host? Or to use them for content blocking?

[Andrew Rossmann]

In article <ogpk8q$5bp$1...@dont-email.me>, rick0....@gmail.com says...

>
> How do I setup an Xfinity UT (wifi, phone, router combo)
> with "Open DNS"?

Most Comcast gateways do not allow the user to change the default DNS.
You would have to manually configure your computers and devices, if
that's even possible on some.

You could also get your own router, put the gateway in bridge mode with
WiFi disabled, then have 100% control over all settings.

--
If there is a no_junk in my address, please REMOVE it before replying!
All junk mail senders will be prosecuted to the fullest extent of the
law!!
http://home.comcast.net/~andyross

[VanguardLH]

Andrew Rossmann <andysnewsreply@no_junk.comcast.net> wrote:

> rick0....@gmail.com SAID ...

>
>> How do I setup an Xfinity UT (wifi, phone, router combo)
>> with "Open DNS"?
>
> Most Comcast gateways do not allow the user to change the default DNS.
> You would have to manually configure your computers and devices, if
> that's even possible on some.
>
> You could also get your own router, put the gateway in bridge mode with
> WiFi disabled, then have 100% control over all settings.

Anyone can configure the TCP settings in the OS on their host to use a
specific DNS server instead of using the one offered by the first
upstream DHCP server (from the router's or cable modem's DHCP server).
If I configure TCP in my host to use Google DNS or OpenDNS or something
else, it doesn't matter what DNS server my router's or Comcast's cable
modem DHCP server will offer. With a specified DNS server and likewise
when using static IP address in my host's TCP config, I'm not using the
DHCP server to have it assign me those addresses.

If Comcast started blocking port 53 traffic that crossed their network
to reach a DNS server outside their network (so port 53 traffic could
only reach Comcast's in-network DNS servers), they would fuck over a lot
of their customers, including business users.

[meagain]

On 6/2/2017 9:17 AM, Andrew Rossmann wrote:
> In article <ogpk8q$5bp$1...@dont-email.me>, rick0....@gmail.com says...
>>
>> How do I setup an Xfinity UT (wifi, phone, router combo)
>> with "Open DNS"?
>
> Most Comcast gateways do not allow the user to change the default DNS.
> You would have to manually configure your computers and devices, if
> that's even possible on some.
>
> You could also get your own router, put the gateway in bridge mode with
> WiFi disabled, then have 100% control over all settings.
>

Yes, use of bridge mode is the only solution Comcast could
offer/support. Thank you.