Cybersecurity
Cybersecurity Fundamentals
Protect systems and data. Learn core security concepts, common threats, and defenses every professional and business needs…
USD 89
Network Security Essentials
Design, configure and monitor the defences of a small or medium business network, from firewall rules and VPNs to segmentation, wireless, DNS and email security.
About this course
Secure the network layer. Master firewalls, VPNs, segmentation, and monitoring to defend against intrusions and attacks.
What you will learn
- Explain how TCP/IP, ports and common protocols work and where attackers abuse them
- Design a segmented network with VLANs and zones that limit how far an intruder can move
- Write and review firewall rules using default-deny and least-privilege principles
- Choose and configure secure remote access, wireless and DNS and email protections such as WPA3, SPF, DKIM and DMARC
- Use packet captures, logs and IDS alerts to spot suspicious traffic
- Produce a secure network design and hardening plan for a small business
Curriculum
Module 1Network Foundations4 lessons
- 1TCP/IP for Security People Free preview
- 2Ports, Protocols and Services
- 3Network Devices and Their Roles
- 4Network Segmentation
- QModule quiz (4 questions)
Module 2Perimeter and Access4 lessons
- 5Firewalls: Rules and Architectures
- 6VPNs and Secure Remote Access
- 7IDS/IPS Explained
- 8Zero Trust Concepts
- QModule quiz (4 questions)
Module 3Monitoring and Defence4 lessons
- 9Traffic Analysis Basics
- 10Wireless Network Security
- 11DNS and Email Security
- 12DDoS Attacks and Mitigation
- QModule quiz (4 questions)
Module 4Applied Network Security3 lessons
- 13Secure Network Design Case Study
- 14Common Misconfigurations
- 15Course Project: Design a Secure SMB Network
- QModule quiz (4 questions)
PFinal project: Secure Network Design for a Multi-Site Small Business
Who this course is for
- IT support staff and junior administrators responsible for an office or branch network
- Cybersecurity beginners who want a solid, practical understanding of network defence
- Small business owners and managers who need to understand and question their network setup
Requirements
- A Windows, macOS or Linux computer where you can install free tools such as Wireshark and Nmap
- Basic computer skills; earlier exposure to IP addresses and routers is helpful but not required
- Access only to networks you own or have written permission to test
What is included
Written lessons
15 lessons, each with a practical exercise and key points to remember.
Module quizzes
A short quiz at the end of each module. Pass mark 70%, and you can retake it.
Final project
Secure Network Design for a Multi-Site Small Business. A practical brief with steps and a way to check your own work.
Certificate
A certificate of completion from EMFAD Courses with a unique code anyone can verify.
How the certificate works
Complete every lesson and pass every module quiz with 70% or more. Your certificate then appears in your learner area, ready to print or save as PDF. It shows your name, the course title, the completion date and a unique code. It is a certificate of completion from EMFAD Courses, not an accredited qualification.
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