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Redirect DNS calls?

politby
Greetings,

I have a number of Google chromecast devices on my network. They are hard coded to use Google's DNS servers  so they will not  use  the DNS forwarders allocated by the DHCP server. With my previous router I used a masquerading rule to redirect all DNS calls from the chromecast devices to the DNS server I really want them to use.

E.g. when the chromecast issues a DNS call to 8.8.8.8 I want that call intercepted and re routed to "x.x.x.x". How do I achieve this in Sophos UTM?


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  • 0
    DNAT rule ?

    Chromecast Devices -> DNS -> 8.8.8.8
    Change the destination to: 
  • 0 in reply to vilic
    DNAT rule ?

    Chromecast Devices -> DNS -> 8.8.8.8
    Change the destination to: 


    Better yet:

    Chromecast device -> DNS -> Internet IPv4 
    Change destination to alternate DNS server.

    Google uses 8.8.4.4 as well as 8.8.8.8 as well as IPv6 DNS servers and maybe even more.

    Managing several Sophos UTMs and Sophos XGs both at work and at some home locations, dedicated to continuously improve IT-security and feeling well helping others with their IT-security challenges.

    Sometimes I post some useful tips on my blog, see blog.pijnappels.eu/category/sophos/ for Sophos related posts.

Reply
  • 0 in reply to vilic
    DNAT rule ?

    Chromecast Devices -> DNS -> 8.8.8.8
    Change the destination to: 


    Better yet:

    Chromecast device -> DNS -> Internet IPv4 
    Change destination to alternate DNS server.

    Google uses 8.8.4.4 as well as 8.8.8.8 as well as IPv6 DNS servers and maybe even more.

    Managing several Sophos UTMs and Sophos XGs both at work and at some home locations, dedicated to continuously improve IT-security and feeling well helping others with their IT-security challenges.

    Sometimes I post some useful tips on my blog, see blog.pijnappels.eu/category/sophos/ for Sophos related posts.

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