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Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

forumuser201
I'm Here A Lot

I have a CGM4140COM modem through the Rogers ignite plan. Does anyone know how I can change the default DNS? I have logged into the gateway panel, I can see the current dns servers but there isn't any way to edit them.

 

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29 REPLIES 29

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

dannycanuck
I've Been Around

I've looked into this & found there is NO way to change the DNS servers on the router. Maybe Rogers could throw us advanced users a bone and enable a way to change ipV4 & ipV6 DNS servers in a future firmware update

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Biollw
I'm a Trusted Contributor

If you absolutely require a different DNS server to be used, then set the TCP config on your computer. Then you can have a different DNS server.

 

Or set the VB6 in bridge mode and use your own router.

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Ok thanks for the replies guys. I had my previous plan in Bridge Mode (recently upgraded to ignite) with Google WiFi, no issues. The tech said that it might 'break' the ignite tv (honestly I think he might of just been trying to pitch eero). Have any of you guys done this with the ignite tv? I can just factory reset to disable bridge mode, right?

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Biollw
I'm a Trusted Contributor

@forumuser201 wrote:
Ok thanks for the replies guys. I had my previous plan in Bridge Mode (recently upgraded to ignite) with Google WiFi, no issues. The tech said that it might 'break' the ignite tv (honestly I think he might of just been trying to pitch eero). Have any of you guys done this with the ignite tv? I can just factory reset to disable bridge mode, right?

Yes I have it in bridge mode with my netgear Router. 3 xi6 boxes wired and all works great even netflix 

 

Good luck

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

SHaDoW6
I Plan to Stick Around
@Biollw, any special settings to get that to work even Netflix?
I’m doing same but my Netflix doesn’t work.

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Biollw
I'm a Trusted Contributor

No special settings. I have left the DNS as rogers.

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

SHaDoW6
I Plan to Stick Around
@Biollw, do you have any ipv6 setting enabled ?

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Biollw
I'm a Trusted Contributor

I don't even see IPv6 anywhere in my router settings.

 

Hang on I found it. No IPv6 is disabled on my router.

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

SHaDoW6
I Plan to Stick Around
Wow, your lucky! Can’t figure out why I can’t get Netflix

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

btaylor21
I've Been Around

how did you disable the ipv6??

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

SHaDoW6
I Plan to Stick Around
I have my Rogers box in bridge mode and on my own router (ASUS RT-AC86U) I went into the ipv6 tab and disabled it.

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

gp-se
I'm an Advisor

Hey guys, I just got this new modem with my Ignite service. Are we able to set custom DNS servers, and does it offer any type of IDS (Intrusion Detection Service)? Is there any tweaks/settings that ya'll recommend for optimal performance?

I love the Broadcom chipset in this thing, my ping and latency seems much better than the unpredictable Hitron it replaced.

 

 

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Gdkitty
Resident Expert
Resident Expert

That I am aware, you are not able to assign a different DNS with the modem/gateway itself.

Likely would have to go in bridged with your own router. (but that recalls another whole setup then for the TV units.)



Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

-G-
Resident Expert
Resident Expert

@Gdkitty wrote:

That I am aware, you are not able to assign a different DNS with the modem/gateway itself.

Likely would have to go in bridged with your own router. (but that recalls another whole setup then for the TV units.)


I'm also not aware of any way to change the DNS settings on the XB6 itself.  However, I can confirm that if you put the XB6 into bridge mode and use your own router, you can configure 3rd-party IPv4 and IPv6 DNS servers and Ignite TV and Netflix still work fine.



Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Gina4
I Plan to Stick Around

Always one step forward two steps back with this company.

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Good evening,

 

Can anyone with Rogers that reads the forums please submit a feature request to allow DNS setting changes on Ignite modems? I use an in-house DNS server (pihole) for ad blocking and privacy, which can't be activated for the entire home network without the ability to change DNS settings. Other Rogers modems allow for these changes,  so why not the XB6? It's frustrating to 'upgrade' to Ignite only to have limited settings.

 

Thanks!

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Biollw
I'm a Trusted Contributor

Bridge the VB6 and use your own router. Solved.

 

Good Luck

Bill

Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

-G-
Resident Expert
Resident Expert

@mednorth  This question was recently asked at the Ignite TV "Ask an Expert" event: https://communityforums.rogers.com/t5/Ignite-TV/Ask-an-Expert-Ignite-TV-Pt-II/m-p/450947/highlight/t...

 

@RogersJose wrote:
@gp-se wrote:

I was hoping you guys would allow us to use custom DNS servers on the XB6 like on the previous Hitron Gateway. Is this something that is going to be made available with a future firmware update?

At this time, custom DNS servers aren’t compatible with the Protected Browsing and Parental Control features in Ignite Wi-Fi Hub.

I also don't know how the Xi6 set-top boxes pick up their DNS settings, whether it's through DHCP or if they are provisioned centrally.  You'll have to ensure that whatever solution you come up with doesn't break Ignite TV.



Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

Datalink
Resident Expert
Resident Expert

So, for anyone who uses the XB6 without a router behind it, what do you see for the DNS addresses if you run an ipconfig/all command using a Windows Command Prompt?  Does it point to the modem, or do the actual DNS IP addresses show up?  If they do, what are they?  The Rogers DNS addresses??

 

Primary IPV4 DNS:         64.71.255.204

Secondary IPV 4 DNS:  64.71.255.198

 

Primary IPV6 DNS:         2607:f798:18:10:0:640:7125:5204

 

Secondary IPV6 DNS:   2607:f798:18:10:0:640:7125:5198

 

Or, does some other DNS address show up?  

 

What do the parental controls do, simply control the access times for a given device, or is there an additional capability to filter web content?  If the controls are only for access time control, I fail to see how that involves the DNS addresses?  Router manufacturers seem to be able to control access times with the users choice of DNS addresses, what the problem with the XB6 modems?  Is this a Comcast decision or a Rogers decision?  If this is all on Comcast, then the probability of changing this situation is most likely slim to none.  Of course that just gives Rogers an easy out, "Its all up to Comcast".



Re: Ignite TV - How to change DNS on XB6 (CGM4140COM) modem?

-G-
Resident Expert
Resident Expert

@Datalink  Here are FAQ links for the Ignite WiFi Hub's Protected Browsing and Parental Controls:

https://www.rogers.com/customer/support/article/faqs-protected-browsing-ignite-wifi-hub

https://www.rogers.com/customer/support/article/faqs-parental-controls-ignite-wifi-hub

 

The thing about the XB6 is that it's not just a dumb modem; it's the hub for a whole suite of integrated connected home products and services that Comcast has developed under its Xfinity umbrella.  The Ignite TV bundle (with Internet / TV / Home Phone) is just the starting point for what we might expect.

 

However, it goes beyond that.  For example, the XB6 can also advertise secondary Wi-Fi networks.  The XB6 can enable an SSID to alert field technicians to network problems, and service providers can also leverage the install base of XB6's to provide public Wi-Fi hotspots to their customers.

 

Some of us will find it frustrating that we don't have total control over these devices, have relatively few configuration options on the admin screen, and have very little technical documentation.  There are no option settings to configure alternate DNS servers, no option to enable/disable AP Isolation, and limited control over the Firewall.  (I also did some digging and found a bit of information as to what the "Prefer Private Connection" option in the Connected Devices section is for.)

 

However, others will appreciate the integrated suite of connected home services that are designed to work together and where everything can be controlled through a mobile app.  In order to deliver this functionality and to prevent things from breaking, it also means that the XB6 is effectively a cloud-managed device with very few local configuration options.