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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.

Cisco Packet Tracer

Wireshark

PuTTY

Nmap

Command Line

Your Learning Path

Master This Topic, Step by Step

Go from your first step to master level. Three simple steps, all about Network Security (CompTIA Network+).

Currently studying: Network Security (CompTIA Network+)

Step 1 · Start Here

Network Security (CompTIA Network+) Basics

Get the basics of Network Security (CompTIA Network+) right, and everything after gets easier.

5 min Free to explore

Network Security (CompTIA Network+) for Beginners

Learn the basics — 5 minutes is all it takes

Step 2 · Go Deeper

Advanced Network Security (CompTIA Network+)

Go past the basics. Advanced Network Security (CompTIA Network+) is what sets you apart.

5 min Free to explore

Advanced Network Security (CompTIA Network+) Course

Keep climbing — start the advanced lesson

Step 3 · Master Level

Master Network Security (CompTIA Network+) with AI

Masters work smart. Claude + Artifacts can build interactive demos while you chat — in minutes, not hours.

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AI Interactive Learning

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Start with Step 1. Each step builds on the one before it.