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security Beginner 21 lessons

Network Security (CompTIA Network+)

Establish a strong foundation in networking security. Master IP addressing, routing, switching, and firewall configuration aligned with CompTIA Network+.

You cannot secure what you do not understand. This course builds the essential networking foundation required for any cybersecurity career. You will master the TCP/IP stack, calculate subnets, and configure routers and switches. We cover network defense strategies including firewalls, IDS/IPS, and VPNs. By understanding how packets move through a network, you will be better equipped to detect anomalies and troubleshoot connectivity issues. This curriculum aligns with the CompTIA Network+ certification objectives.

✅ 100% Free & Lifetime Access
⏱️ 5-Minute Lessons (Bite-sized learning)
🚀 21-Lesson Path (Independent modules)
📱 Mobile Friendly (Learn anywhere)
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Complete Course Syllabus

  • 1
    OSI Model
    Understanding the 7 layers of network communication.
  • 2
    IP Addressing
    Binary math, IPv4 subnetting, and CIDR notation.
  • 3
    Routing Logic
    Static routes, OSPF, and how the internet works.
  • 4
    Switching & VLANs
    Segmenting traffic for security and performance.
  • 5
    Network Defense
    Firewalls, ACLs, and securing wireless networks.

Estimated completion time: 21 lessons • Self-paced learning • Lifetime access

Career Outlook

Estimated Salary
$60k - $90k

Career Paths

Network Administrator $65k-$95k
SOC Analyst $70k-$100k
NOC Technician $55k-$80k

What You Will Learn

Design and troubleshoot IPv4 and IPv6 subnets
Configure routers, switches, and wireless access points
Implement network security measures like Firewalls and VPNs
Analyze network traffic using protocol analyzers
Troubleshoot physical and logical connectivity issues

Skills You Will Gain

TCP/IP Subnetting Routing & Switching Network Troubleshooting Firewall Config

Who Is This For

IT Support Techs
Junior SysAdmins
Aspiring Security Analysts

Prerequisites

Basic Computer Literacy
No prior networking needed

Network Security (CompTIA Network+) FAQs

Cert focused?

Yes, covers CompTIA Network+ N10-008 objectives.

Math heavy?

Subnetting requires binary math; we teach the tricks.

Hardware needed?

No, we use Packet Tracer for virtual labs.

Is this hacking?

No, it is the foundation required *before* hacking.

Need more info?
All Reork courses are 100% free, self-paced, and fully accessible on mobile devices. No prior experience is required. Read our full Platform FAQ.

Tech Stack & Tools

Cisco Packet Tracer
Wireshark
PuTTY
Nmap
Command Line

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