• DNS: a way of having one machine be an expert on one or more domain names, so every user is spared the toil of adding machine entries to their /etc/hosts files
• BIND: Berkely Internet Name Daemon, the most common DNS software server in use
• What if your server does not know? Check the master!
• /etc/nsswitch.conf controls order of checking
• We'll change 1 file and create 2 today:
  /etc/named.conf
  /var/named/named.COMPANYNAME
  /var/named/named.COMPANYNAME-rev
  
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