Firewalls
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Firewalls

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  • Jeff Mogul Paul Vixie Brian Reid Fred Avolio Brent Chapman
  • Regulations such as source, IP address and Protocol used Very basic

Firewalls Firewalls Presentation Transcript

  • Firewalls By: Rachel and Merry
  • What is a Firewall
    • Keeps destructive forces out of your network space
    • Filter
    • Same purpose as a fire barrier
  •  
  • History of Firewalls
    • First firewall in 1980's
    • Became more popular in the late 1980's
    • Many people are associated with the creation of the firewall
  • Types of Firewalls Packet Filters
    • The 1 st generation
    • Very basic
    • Follows certain regulations when filtering
    • If it meets the regulations the firewalls forwards it to the another network
  • Types of Firewalls Packet Filters
  • Types of Firewalls Circuit Level Gateway
    • 2 nd generation
    • Looks into another network to connect
    • Filters multiple packets
    • Hides your network
  • Types of Firewalls Circuit Level Gateway
  • Types of Firewalls Application Level Gateways
    • 3 rd generation
    • Can also be called Proxies
    • Follows specific rules when filtering
      • Can stop traffic
      • Monitors the main system
      • Can sound alarms to notify the user
  • Types of Firewalls Application Level Gateways PROS CONS One of the most secure firewalls Expensive Blocks on content, not just URL Affects network performance Difficult to set up
  • Types Of Firewalls Stateful Multilayer Inspection Firewall
    • 4 th generation
    • Combines all three generations
    • Packets must pass through three firewalls to enter network space
  • Types Of Firewalls Stateful Multilayer Inspection Firewall PROS CONS Most secure firewall Expensive Must be set up by professional