DNS Related Technical Terms

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DNS Related Technical Terms
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Table of Contents

• Name server
• Anycast
• Authoritative Name server
• BIND (Berkeley Internet Name Domain)
• BGP (Border Gateway Protocol)
• CNAME

• Delegation
• Forward Lookup
• Global Node
• GSLB
• TSIG

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Name server

• Domain names are translated into IP addresses by
  name servers. This enables users to access
  websites by typing their domain names rather than
  their IP addresses. Name servers are an essential
  part of the DNS (Domain Name System) and aid in
  connecting URLs with web servers IP addresses.
• To digress, every website has an IP address.
  These websites are made accessible online through
  the service of web hosting. This service is
  provided by web hosting companies. The most
  renowned web hosting companies are usually
  referred to as the Best Windows Dedicated
  Hosting Company, the Best Linux Shared Hosting
  Company, the Top Cloud Hosting Company etc.

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Anycast

• Anycast is a routing or addressing method. In it,
  the queries get routed to the nearest node among
  several options. In the context of DNS, an
  anycast network responds to the DNS queries from
  the closest node geographically, when all nodes
  have the same IP address. This aids in keeping
  the DNS secure at any given node from the
  malicious activities or failures at other nodes.
  Anycast nodes are configured as local nodes or
  global nodes.

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1-800-123 -8156

• Whoa! Thats a big number, arent you
  proud?

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Authoritative Name server

• The authoritative name server is a server in the
  DNS. It responds to queries about names in a
  particular zone. These name servers provide
  answers about such zones which are locally
  configured as authoritative zones.

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BIND (Berkeley Internet Name Domain)

• BIND is the abbreviation for Berkeley Internet
  Name Domain. It is the most extensively used name
  server software that can be found on the
  Internet. It originated as an open-source
  software for implementing the Internets DNS
  protocols. This software has three components,
  which include a DNS server, a DNS resolver
  library and software tools that are meant for
  testing.

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BGP (Border Gateway Protocol)

• The BGP is the abbreviation for Border Gateway
  Protocol and refers to a protocol for system
  routing. This highly scalable as well as robust
  protocol is used to route information on the
  Internet. It defines routing policies by using
  route parameters. It maintains a routing
  environment that is stable. It lets gateway hosts
  exchange routing information in a network of
  autonomous systems.

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Delegation

• In delegation, a server is delegated to be a
  domain names authoritative name server. It can
  involve delegating responsibility with regard to
  name resolution to a server that is owned by a
  DNS supplier.

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Forward Lookup

• In forward lookup, a domain name is used to find
  an IP address.

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Global Node

• Queries from anywhere on the Internet are
  answered by a global node in the DNS. It is
  accessible from anywhere on the Internet.

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GSLB

• GSLB stands for Global Server Load Balancing.
  GSLBs refer to geographically distributed
  servers. These have authoritative name servers
  running at every site. Load balancing is meant to
  manage traffic across the servers.

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TSIG

• TSIG is the abbreviation for Transaction
  Signature. It is used to send zone updates in a
  secure manner between nodes/servers. The DNS uses
  it as a networking protocol. It ascertains that
  the information from a certain server is indeed
  from that server.

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Thanks!

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