Notes for Computer Information Technology 160
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oct17-dns.md 452B

October 17 - DNS

Overview

  • DNS - Domain Name System

    • Zones
    • Resolver
  • Local Setup

    • /etc/nsswitch.conf
    • /etc/hosts
    • /etc/resolve.conf

Ping of Death - when so many pings for the purpose of disruption that no legitimate internet traffic can get through, this was an issue about 15 years ago, and to this day ICMP is still blocked on many university networks