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Internet Related/Filtering/Firewall Thread, Root Zones Vs DNS Forwarder in Technical; Whenever I set up a new DNS server, I just set it to use the root zones. A colleague insists ...
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    RabbieBurns's Avatar
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    Root Zones Vs DNS Forwarder

    Whenever I set up a new DNS server, I just set it to use the root zones. A colleague insists in putting the ISP and then OpenDNS as forwarders first.

    What are the advantages?

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    mac_shinobi (28th July 2010)

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    ajbritton's Avatar
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    You are reducing your attack surface to things like the DNS cache poisoning - Wikipedia, the free encyclopedia bug discovered by Dan Kaminsky a couple of years ago. At the time, OpenDNS hardened their servers quite quickly IIRC.

    There is also a reduction in traffic across your Internet link. If your DNS server does all the work, it will have to make multiple lookups for each URL it has to resolve (notwithstanding caching). Using forwarders should result in single lookups.

    I've always gone down the route of using forwarders myself, but have stuck to using ISP.

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