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How to force DHCP clients to use specific DNS adress like 8.8.8.8

ComputerCare

I want my DHCP clients to use a specific DNS address like 8.8.8.8, if some clients tries to change their DNS address they should not be able to surf the internet. Please help me to implement this rule on my SOPHOS XG Firewall router.

Thank You

Regards,

Govinda Thapa



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  • +1

    Hi Govinda,

     

    with regards to this setup,

    - you need to set XG in your hosts DNS settings. and set XG's DNS with 8.8.8.8 or whichever dns you prefer. and configure a firewall rule that will block any outbound dns query.

    - configure a firewall rule that will only accept dns traffic from LAN to WAN zone and 8.8.8.8 or any other preferred DNS as destination network.

     

    Let us know, how it goes.

     

    Regards,

    Rap 

Reply
  • +1

    Hi Govinda,

     

    with regards to this setup,

    - you need to set XG in your hosts DNS settings. and set XG's DNS with 8.8.8.8 or whichever dns you prefer. and configure a firewall rule that will block any outbound dns query.

    - configure a firewall rule that will only accept dns traffic from LAN to WAN zone and 8.8.8.8 or any other preferred DNS as destination network.

     

    Let us know, how it goes.

     

    Regards,

    Rap 

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