< Network+ < Security

This lesson covers firewalls.

Objectives and Skills

Objectives and skills for the firewalls portion of Network+ certification include:[1]

  • Given a scenario, install and configure a basic firewall
    • Types of firewalls
      • Host-based
      • Network-based
      • Software vs hardware
      • Application aware/context aware
      • Small office/home office firewall
      • Stateful vs stateless inspection
      • UTM
    • Settings/techniques
      • ACL
      • Virtual wire vs routed
      • DMZ
      • Implicit deny
      • Block/allow
        • Outbound traffic
        • Inbound traffic
      • Firewall placement
        • Internal/external

Readings

  1. Wikipedia: Firewall (computing)
  2. Wikipedia: Comparison of firewalls

Multimedia

  1. Watch YouTube: Firewalls - CompTIA Network+ N10-006 - 3.5.
  2. Watch YouTube: Firewall Configurations - CompTIA Network+ N10-006 - 3.5.

Lesson Summary

  • There are many implementations of software based Firewalls, some of the most popular are: Netfilter (iptables), ipfirewall and PF[2]

References

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