Airtel DNS Changing itself

Discussion in 'Airtel Broadband' started by Amitabh Bansal, Jun 16, 2015.

  1. Amitabh Bansal

    Amitabh Bansal New Member

    I am from Delhi and using airtel broadband with DSL-2520u router connected with apple airport extreme dual band base station wifi router, from last 3-4 months every device connected to the net by airtel broadband started opening unknown and porn sites, i consulted customer care and they asked someone to contact me, they asked me to mention the dns server in the router and, changed the password as well, and cleared all the cache from the browser, few days it goes well but suddenly something started again, and when i checked the router DNS the primary DNS was changed automatically, i was surprised, i changed it back to and rebooted, after 2-3 days it happen again, now i am fed up by this thing, dont know what to do, i consulted with DLINK customer care too and they told me its a ISP issue talk to them, i am using Macbook Pro, please help me if someone knows the cure.
  2. Admin

    Admin Administrator Staff Member

    Do you have your wifi protected with a password?

    Use WPA2 AES and see if that helps the situation.

    From what you have explained it looks like either some one is able to access your router or one of your machines have a virus that is causing this.
  3. Amitabh Bansal

    Amitabh Bansal New Member

    i am using Mac and mac never effect by a virus or malware, my router is already protected by secured password, but still its happening, :(
  4. Admin

    Admin Administrator Staff Member

    There are many types of password security in a router, this is why I asked you to try using WPA2 AES. Open the router settings page and go into wifi security tab and change it accordingly. It is also advisable to change the password often.
  5. Amitabh Bansal

    Amitabh Bansal New Member

    is there any way to reinstall the firmware of the router? i think its infected
  6. Admin

    Admin Administrator Staff Member

    There is a small button that can be pressed with a sharp object like a pen or something similar to reset the router to factory settings. Please note down the settings whatever you have before you reset it because you would lose all the settings. After factory reset you can configure it again.
  7. Amitabh Bansal

    Amitabh Bansal New Member

    that pin hole button is to reset, i did it several times but still same things happen, thats why asking you the way to re-install the firmware
  8. Admin

    Admin Administrator Staff Member

    For Dlink routers and modems it is not a big deal. Please follow the steps below :

    First get the firmware from Dlink. (Get it from Dlink website from your product page and if it is not available there give customer care a quick call.

    Once you have the firmware file on your computer do the following :

    Plug in the LAN (Ethernet) cable to your computer with the router.

    Set up your computer with a static ip different from your routers default IP. You can set it up to something like

    Now unplug the router power.

    Press the reset button on your router for 4-5seconds and while the button is still pressed you need to plug in the power cable for your router.

    Once power is on you can release the reset button.

    Now open the router settings page in a browser using IP :

    You will see Emergency flashing page on the screen.

    Upload the firmware file and you will see the confirmation of success on your screen. In case you dont see the confirmation for some reason please repeat the process as described above and there is no reason for this to not work.

    That concludes the flashing of your router and now you can set up the settings as provided by your ISP.

    PS: This is the normal procedure with most Dlink routers but there are some models that have a different method so it would be worth giving customer care a call to confirm that this method would work for your model and if not ask them the procedure that applies to the model you have got.

    I hope this works for you.
  9. Admin

    Admin Administrator Staff Member

    I find it very hard to believe that the factory reset button does not get rid of the infection.
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