How do I change my DNS settings on a Thomson router?

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11 comments

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    rotblitz

    You'll want to do this with the CLI via telnet.
    http://npr.me.uk/telnet.html

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    cordylox

    Thank you, but you got me at the first sentence: "Use the routers web interface to backup the router settings before playing."

    I have no idea how to do this or even what it means! I am a teacher, seems like you need to be a computer technician to set up anti-porn controls on your internet!

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    rotblitz

    As a teacher: if you don't understand something, simply explain what it is you don't understand and ask for it.

    Is it "router"? Or "web interface"? Or "backup"? Or "settings"? These four terms are the only ones which possibly could not be understood.

    Although it's not my site I linked to, I try to reword it: "Visit the router's administration interface with a web browser to select the function which saves a copy of your router settings to your computer disk."
    Your router's manual should provide you with all the details about saving and restoring settings. Did you read it?

    "seems like you need to be a computer technician"

    No, else instructions would not be needed to that detail. Also, it's not OpenDNS who constructed this router and wrote its firmware.
    Btw, here is the official OpenDNS instruction for your kind of router: https://store.opendns.com/setup/device/speedtouch

    Further, you don't need to configure the OpenDNS resolver addresses on the router if this is over your head. You can do it on the computer as well instead:
    https://store.opendns.com/setup/computer

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    brieng

    O2 have a Thomson router and they have it set up so that you need to be logged in as SuperUser (default password is the router serial number) to change the Dynamic DNS settings. I still haven't worked out how to configure via the interface as its not just a case of entering the new nameserver IP addresses like on Netgear routers. If you are logged in as Administrator it will kick you back out to a login prompt as Administrator is just a 'Network Administrator' not for the whole device.... STUPID THOMSON and O2!!! 

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    rotblitz

    "to change the Dynamic DNS settings"

    But this would be for the Updater, not for the DNS server settings.  These are two totally different things.

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    brieng

    Thanks Rotblitz, really helpful.

    On My O2 Thomson 587 router I worked out you can't set the values via the regular interface regardless of which user you are Logged in as.

    You need to load the Telnet program. If you are a windows user it isn't always installed. You might need to enable it via Control Panel before you can run it.

    • Run up a Command prompt. In Windows 7 click start then type cmd in the search box
    • Once the Command prompt window is open type Telnet and press enter,
    • At the telnet prompt type open and press enter,
    • The telnet command prompt should now be displayed.
    • Type in the address of your Thomson router 192.168.1.254 and press enter
    • When prompted enter your SuperUser login details
    • Username: SuperUser
    • Password: default for O2 is the router serial number
    • Enter the command dns server route list  this will return a list of information including DNS Server name and your current DNS IP address(es).
    • You MUST take a note of the value for the Intf parameter for the commands to change to OpenDNS shown below.

      For my O2 connection it is O2_ADSL2plus
    • Type dns server route flush and press enter. This should clear out your current DNS server settings
    • Type each of the following two commands, Replacing O2+ADSL2plus with your own Intf value noted earlier. Press enter after each one:

      dns server route add dns=208.67.222.222 metric=0 intf=O2_ADSL2plus
       

      dns server route add dns=208.67.220.220 metric=0 intf=O2_ADSL2plus
    • Type dns server route list and check that the new table contains the correct IP addresses
    • Type saveall and press enter

    You can now visit OpenDNS and setup your parental controls/web filtering.

     

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    davewright

    I had to recently replace my Arris cable modem gateway with a Thomson DWG-875X for use with TimeWarner Cable. There is no option within the WebUI to set the DNS server addresses that the Thomson will provide to clients via DHCP. I have read through the information here and on other sites, but unfortunately on the 875 with TWC, TELNET is disabled.

    Are there any other methods to configure this? Right now, we are not getting any of the benefits of OpenDNS filtering on our home network.

    Thanks,
    Dave

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    rotblitz

    Here are the OpenDNS experts.  The Thomson experts must be somewhere else...
    Especially, this DWG-875X is lousy documented.  Hard to find any information about it.

    "Are there any other methods to configure this?"

    Yes, configure the OpenDNS resolver addresses on your devices.
    https://store.opendns.com/setup/computer/

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    troncoso.tomas

    Hi! I haven't managed to change the DNS settings in my Thomson router (TCW750-4).

    If I have understood well there is no option to do so through the web interface so I am tryinig to do it using telnet.

    But through telned when I try to access 192.168.1.254 I get an error telling me that connection to the host cannot be established, in port 23.

    Any clue on how to solve it? I have disabled the antivirus and Firewall but not working right now.

    Thank you.

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    rotblitz

    Is it known that this router model has a telnet interface at all?

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    troncoso.tomas

    Hi roblitz,

    You are right, I haven't "official" confirmation to that point, I assumed that all the Thomson routers would be accesible through that method, but I might be wrong.

    I have sent an email to Thomson support to check whether this model is really accesible through telnet or not.

    I'll let you know if I make any progress on this.

     

    Thank you!

     

     

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