Response | Technology cont’d

• Firewalls

  • Partition, manage multiple operating zones
  • Firewalls used be 2-port (concept and implementation)
    • Internal (trusted)
    • External (untrusted)
  • Today, most firewalls are 3-port...
    • Internal (sort of trusted)
    • External (untrusted, lawless)
    • DMZ (war zone)