Network Concepts

To become a security analyst, you need to start with understanding the basics of networking.


  • Network Fundamentals Video — 00:09:42
    • Learn about basic networking concepts.

  • Network Protocols – ICMP Video — 00:04:06
    • Learn about the Internet Control Message Protocol (ICMP).

  • Network Protocols – ARP Video — 00:02:55
    • Learn about the Address Resolution Protocol (ARP).

  • Network Protocols – DHCP Video — 00:04:01
    • Learn about the Dynamic Host Configuration Protocol (DHCP).

  • Network Protocols – DNS Video — 00:02:56
    • Learn about the Domain Name System (DNS) protocol.

  • Network Devices Video — 00:04:48
    • Learn about different network device types.

  • Firewalls Video — 00:02:49
    • Learn about Cisco’s firewall product line.

  • IPS and AMP Video — 00:08:38
    • Learn Cisco’s Intrusion Prevention System (IPS) and Advanced Malware Protection (AMP) solutions.

  • Email and Web Security Video — 00:01:18
    • Learn Cisco’s email and web security solutions.

  • Inline Traffic Interrogation, Taps and NetFlow Video — 00:01:46
    • Learn about the different ways to intercept network traffic.

  • DNS, SMTP/POP3/IMAP Video — 00:00:40


Course description

Networks can be complex, confusing and tricky. With this course, you’ll dive into the devices and protocols used in networking, getting to grips with the basics of what you’ll need to know for a successful security analyst career.

Meet the author

Matt Carey is a network engineer who has been in the IT field for over a decade. He has worked on over 100 networks with his main focus being Cisco WAN, DC, SDN and security solutions.

Working as a consultant has given him exposure to many different technologies and skills, which has helped him excel in IT. Teaching has always been one of his passions, and he started working as an instructor about five years into his career. He enjoys using his experience to help others further their careers in IT and security.

Associated NICE Work Roles

All Infosec training maps directly to the NICE Workforce Framework for Cybersecurity to guide you from beginner to expert across 52 Work Roles.

  • All-Source Analyst
  • Mission Assessment Specialist
  • Exploitation Analyst

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We use Infosec Skills to provide continuous training to our technicians and to prepare them for various certifications. Infosec Skills allows us to create personalized training programs that focus on each of our technicians’ particular roles and see their progress as they take courses. We also, recommend it to clients to make their IT support teams better.

Caleb Yankus


This has been utilized to bridge the skills gap across our cyber team and to aid them as they prepare for their various certifications. It also has provided a nice learning foundation for our various cyber team members to utilize as we continue to find ways for cross-utilization with operations while minimizing the downtime needed to ensure everyone’s knowledge is the same.

Daniel Simpson


We use Infosec Skills to provide base level knowledge for employees. We also use the services to provide in depth learning for employees as they encounter new technologies. If an employee is is assigned to a new project, we can rely on Infosec Skills to provide a rapid concentrated learning environment. This rapid concentrated learning positions our employees for success.

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