DNS: Difference between revisions
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; Why do we need DNS?<ref>www.zscaler.com</ref>
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*If DNS ALG is disabled, the session table may fill in a short time.
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Source: [[http://think-like-a-computer.com/2011/06/11/dns-zones-explained/ think-like-a-computer.com]]
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*DNS zone transfer (Also called AXFR) is a mechanism to replicate DNS databases across a set of DNS servers.
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DNS client tells DNS server whether Query is Recursive or Iterative.
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* DNS doctoring enables an internal host on a LAN to receive the Private ip of an internal server as an answer from a DNS query when using a DNS server that is outside the LAN, such as on the internet.
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A Address record Returns a 32-bit IPv4 address,
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