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Standard Proxy/DNS Question

Greetings - 

I've introduced a PiHole into my network and told my DHCP devices to point to it for DNS.  This seems to work well for my devices being filtered through transparent proxy, but not for devices on standard proxy.  Am I correct in saying that standard proxy devices are looking to the UTM defined forwarders for their external lookup?  If so, is there a way to separate the DNS requests outside of the proxy?  Current DNS setup is Microsoft Server DNS --> PiHole --> Sophos UTM --> Quad 9/Google Availability Group.  Many thanks.



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  • When a web browser obeys the standard proxy configuration, it sends a request to UTM of the form, "Please fetch this web page for me."   

    The client sends the URL to UTM and UTM performs the DNS lookup, no DNS lookup occurs on the client.

  • "Microsoft Server DNS --> PiHole --> Sophos UTM --> Quad 9/Google Availability Group"

    What is the function of the "Microsoft Server DNS" here?  What problem are you having?

    You might be interested in trying DNS best practice.

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA