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LinkedIn Learning

Firewall Administration Essential Training

via LinkedIn Learning


Learn how to plan for, install, and administer a network firewall. Explore how firewalls help to secure traffic, and get tips for building a secure network barrier of your own.

Security is the greatest need in the digital world right now, and it shows no sign of slowing down. And when it comes to protecting a private network, a firewall is the most fundamental security technology out there. In this course, Sean Colins covers the fundamentals of firewall functionality, configuration, and administration in short, easy-to-understand segments designed to put this complex network security technology into the reach of novice to intermediate firewall administrators. Sean goes over basic and advanced firewall configuration tasks, shares practical case studies, and offers troubleshooting tips. Upon wrapping up this course, you'll be ready to get your own firewall up and running on your network.


  • Build a secure network barrier with a firewall
  • Why do you need a firewall?
  • Types of firewalls
  • Decide which type of firewall to use
  • What it won't do
  • Plan for your firewall
  • Design your network
  • Document your design
1. Basic Firewall Configuration
  • Understand traditional firewalls
  • Understand protocols
  • Initial setup
  • Create firewall schedules
  • Create firewall rules
  • Create floating rules
  • Allow specific inbound traffic with rules
2. Advanced Firewall Configuration
  • Use aliases to efficiently group hosts
  • Use ports in aliases
  • Prevent local traffic from exiting to the internet
  • Traffic shaping
  • Introduction to IPS/IDS via Snort
3. Configuration Case Studies
  • Prioritizing VOIP traffic
  • Blocking access to websites
  • Intrusion protection basics
  • Reducing priority by application type
  • Understand proxies and SSL
4. Troubleshooting
  • Firewall command-line access
  • Firewall rule troubleshooting
  • Troubleshoot gaming performance
  • Troubleshoot software updates
  • Read logs and interpret TCP flag definitions
  • Next steps

Taught by

Sean Colins

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