N|DE

EC-Council · Cyber Essentials · Exam 112-51

Network Defense

Essentials

Master the fundamentals of information security and network defense — covering access controls, firewalls, VPNs, cloud security, cryptography, and real-world lab exercises. No prior IT experience required.

Network Security Access Control Firewalls VPN / IDS / IPS Cloud Security Wireless Security Cryptography Mobile Security IoT Security Data Protection

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N|DE Program

Network Defense Essentials · 12 Modules

Network Security Fundamentals

Module 01

Identification, Auth & Authorization

Module 02

Administrative Security Controls

Module 03

Physical Security Controls

Module 04

Technical Security Controls

Module 05

Virtualization & Cloud Security

Module 06

+ 6 more modules including IoT, Mobile, Crypto & More

Modules

Full 112-51 syllabus

Questions

Multiple choice exam

2 Hours

Duration

Timed exam

24/7

Support

Expert guidance

Why N|DE

Your Gateway to Cybersecurity

The N|DE certification gives you a complete, hands-on foundation in network security — built for beginners with zero experience required.

No Prerequisites Required

Designed for absolute beginners — students, graduates, and professionals from any background can start immediately without prior IT or cybersecurity experience.

100% Hands-On Labs

Every module includes real-world lab exercises using tools like Wireshark, pfSense, Wazuh HIDS, Suricata IDS, VeraCrypt, and SoftEther VPN.

EC-Council Accredited

N|DE is an ANSI-accredited, globally recognised entry credential from EC-Council — the world's largest cybersecurity certification body.

Career Launchpad

A structured stepping stone to C|EH, C|ND, C|CT, and beyond — the N|DE gives you the vocabulary and concepts to accelerate your cybersecurity career path.

Skills You'll Gain

The Complete N|DE Skill Set

From identifying network threats to deploying firewalls, IDS/IPS, VPNs, and cloud security controls — every skill area from the 112-51 exam syllabus.

Network Security Protocols

Essential protocols, threats, and defense mechanisms forming the backbone of network security.

Access Control & IAM

Authentication, authorization, identity management, RBAC, Windows/Linux access control.

Regulatory Frameworks

Laws, acts, security policies, awareness training, and administrative control best practices.

Physical Security

Physical controls, workplace security, environmental controls, CCTV and biometric systems.

Firewalls & IDS/IPS

Firewall types, pfSense deployment, Suricata IDS, Wazuh HIDS, proxy servers, honeypots.

VPN & SIEM

SoftEther VPN, SIEM platforms, User Behavior Analytics, anti-malware deployment.

Cloud & Virtualization

AWS IAM, S3 security, Docker security, cloud best practices, and virtualization security.

Wireless & Mobile Security

WPA3 encryption, wireless auth methods, MDM solutions, and Miradore MDM.

IoT Security

IoT communication models, TLS/SSL for IoT devices, securing connected environments.

Cryptography & PKI

Encryption algorithms, PKI infrastructure, HashCalc, MD5 hashing, self-signed certificates.

Data Security & DLP

Disk encryption (VeraCrypt), data backup, data loss prevention, EaseUS recovery.

Traffic Monitoring

Wireshark, tcpdump, traffic baseline analysis, and suspicious traffic detection.

Who Should Enroll

N|DE Is for Everyone Starting Their Security Journey

No experience needed — the N|DE is specifically designed to be the first step for anyone entering cybersecurity.

👨‍🎓

Students & Graduates

College and university students building a cybersecurity foundation alongside their IT education.

🏫

High School Students

Young learners who want an early start and want to master online security fundamentals.

💼

Working Professionals

Professionals from any domain looking to switch into cybersecurity or add network security skills.

🔄

Career Changers

Anyone transitioning from a non-IT field who wants a structured, recognised starting point.

Your EC-Council Certification Roadmap

N|DE Network Defense Essentials Start Here

Start here — Exam 112-51

C|CT Certified Cybersecurity Technician

Core certification, 20+ domains — Exam 212-82

C|ND Certified Network Defender

Advanced network defense — Exam 712-50

C|EH Certified Ethical Hacker

World's #1 ethical hacking cert — Exam 312-50

C|EH Master CEH Master

6-hour practical exam — the elite credential

Curriculum

N|DE — 12 Course Modules

Every 112-51 exam objective covered — from network fundamentals to traffic monitoring, with hands-on labs throughout.

Fundamentals of Network Security
Network Security Protocols

Access Control Principles, Terminologies, and Models
Identity and Access Management (IAM) Concepts
Implementing Access Controls in Windows
Managing Access Controls in Linux
Implementing Role-Based Access Control in Windows Admin Center (WAC)

Regulatory Frameworks, Laws, and Acts
Design and Develop Security Policies
Conduct Security and Awareness Training
Implementing Password Policies Using Windows Group Policy

Importance of Physical Security
Physical Security Controls
Workplace Security
Environmental Controls

Types of Network Segmentation
Firewall Types and Roles
IDS/IPS Types and Roles
Honeypot Types
Proxy Server Types and Benefits
VPN Fundamentals and Network Security Importance
Security Incident and Event Management (SIEM)
User Behaviour Analytics (UBA)
Antivirus / Anti-malware Software
Host-Based Firewall with iptables
Windows Firewall Configuration
pfSense — Blocking Unwanted Website Access
pfSense — Blocking Insecure Ports
Wazuh HIDS — Host-Based IDS Implementation
Suricata IDS — Network-Based IDS Implementation
Detect Malicious Traffic using HoneyBOT
SoftEther VPN Connection Setup

Virtualization Essential Concepts and OS
Virtualization Security
Cloud Computing Fundamentals
Cloud Security Best Practices
Docker Host Security Audit (Docker-Bench-Security)
AWS Identity and Access Management
Securing Amazon Web Services Storage

Wireless Network Fundamentals
Wireless Network Encryption Mechanisms
Wireless Network Authentication Methods
Implementing Wireless Network Security Measures
Configuring Security on a Wireless Router

Mobile Device Connection Methods
Mobile Device Management (MDM) Concepts
Common Mobile Usage Policies in Enterprises
Security Risks and Guidelines for Enterprise Mobile Usage
Implement Enterprise-Level Mobile Security Management
General Security Best Practices on Mobile Platforms
Implementing Enterprise Mobile Security Using Miradore MDM

IoT Devices, Application Areas, and Communication Models
Security in IoT-Enabled Environments
Securing IoT Device Communication using TLS/SSL

Cryptographic Techniques
Cryptographic Algorithms
Cryptography Tools
Public Key Infrastructure (PKI)
One-Way Hashes using HashCalc
MD5 Hashes using HashMyFiles
Creating a Self-Signed Certificate

Data Security and its Importance
Security Controls and Data Encryption
Data Backup and Retention
Data Loss Prevention (DLP) Concepts
Disk Encryption using VeraCrypt
File Recovery using EaseUS Data Recovery Wizard
Backing Up and Restoring Data in Windows

Need and Advantages of Network Traffic Monitoring
Baseline Traffic Signatures for Normal and Suspicious Traffic
Performing Network Monitoring for Suspicious Traffic
Capturing Network Traffic using Wireshark
Applying Various Wireshark Filters
Analyzing Network Packet Headers using tcpdump

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