Domain Name System

• Session-1: DNS Fundamentals

  Presentation: PDF | PostScript gzipped
  DNS Exercise-1: PDF | PostScript gzipped
  - configure the Unix resolver
  - use the "dig" utility to query for DNS records
  - use tcpdump to show queries being sent to cache

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• Session-2: DNS Caching Operation & DNS Debugging

  Presentation: PDF | PostScript gzipped
  DNS Exercise-2: Debugging nameservers using "dig +norec"
  - A worked example.
  - Worksheet

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• Session-3: Configuring Authoritative Name Servers

  Presentation: PDF | PostScript gzipped
  DNS Exercise-3: Setting up Authoritative nameservers
  - Setting up an Authoritative Master/Primary Name Server.
  - Setting up an Authoritative Slave/Secondary Name Server.