Default DNS resolution on USG FLEX

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valerio_vanni
valerio_vanni Posts: 157 image  Master Member
5 Answers First Comment Friend Collector Fourth Anniversary
in Security
How does DNS resolution work, by default?

System -> DNS config page is absolutely empty, I haven't set a forwarder yet. So I would expect the device not to resolve addresses.

But, instead, it resolves. It can act as DNS server for clients, it resolves in CLI.
That's not a real issue but a thing I'd like to understand.
How does it do? Has it some default server address hardcoded? Does it use roots?

Query result in CLI doesn't help understanding where the answer come from:
"Received 334 bytes from 127.0.0.1#53 in 68 ms"

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  • PeterUK
    PeterUK Posts: 4,422 image  Guru Member
    250 Answers 2500 Comments Friend Collector Eighth Anniversary

    It dose recursive DNS with default root


    Its a good thing really as if you got a IP setup with DNS you can't make the USG be a recursive DNS only.


  • valerio_vanni
    valerio_vanni Posts: 157 image  Master Member
    5 Answers First Comment Friend Collector Fourth Anniversary
    PeterUK said:

    It dose recursive DNS with default root

    Was it the same in previous series?

  • PeterUK
    PeterUK Posts: 4,422 image  Guru Member
    250 Answers 2500 Comments Friend Collector Eighth Anniversary
    valerio_vanni said:
    PeterUK said:

    It dose recursive DNS with default root

    Was it the same in previous series?

    yes

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