Using OpenDNS with the O2-supplied Router

One thing that O2 didn’t put into the web interface for the Thomson TG585 wireless routers they supply you with, is a way to change DNS servers. It’s therefore a bit of a pain if you want to use OpenDNS. Luckily it’s not that hard to make the changes via a telnet connection:

telnet 192.168.1.254
Login name: SuperUser
Password: O2Br0ad64nd

Now make a note of your existing DNS setup using this command:

dns server route list

It’ll give you something like this;

DNS Server Entries:
  DNS Server     Source  Label   Metric Intf         State  Domain
D 87.194.0.53                    10     O2_ADSL       UP      *
D 87.194.0.52                    10     O2_ADSL       UP      *

The ‘Intf’ column is the type of connection you have (yours might differ from mine).. you’ll need this for the next commands;

dns server route flush
dns server route add dns=208.67.222.222 metric=0 intf=O2_ADSL
dns server route add dns=208.67.220.220 metric=0 intf=O2_ADSL
dns server route list
saveall

That’s it. Release and renew your IP address on all connected equipment and you’re all set.

5 thoughts on “Using OpenDNS with the O2-supplied Router”

  1. From where did you get the following information:

    Login name: SuperUser
    Password: O2Br0ad64nd

    Since I was provided with the same modem but from other internet company in a different company and those 2 things are not working together.

    I have the user and the Advanceduser that I am aware off.

    On the sticker there thing such as Modem access code, MBC, Bulk. From were to get the password to access change the dns server.

    Login not allowed (User ‘advanceduser’ is disallowed to login from lan to telnet

  2. Did this a while ago but never restored it after O2 tech support talked me through a factory reset for other issues. Finally got around to setting it back to OpenDNS again today – O2 DNS servers are still flaky.

  3. Just a quick tip if you are trying to log in via Tel net make sure you do not have extended security enabled on the router as this will prevent you from logging in :)

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