CND study materials
CND study resources

CND study plan

CND · Give each week a clear focus.

8 weeks · About 6 hours per week

Week 1

Network Attacks and Defense Strategies

  • Diagram the seven phases of a network attack lifecycle and label at least two defensive controls that interrupt each phase

  • Classify 20 given attack techniques (recon, spoofing, MITM, DoS/DDoS, session hijacking, password, malware-based) into their correct category and phase

  • Build a one-page defense-in-depth map that pairs each attack class with a countermeasure category (preventive, detective, corrective)

  • Explain the CND security model - defend, detect, respond - and match each of the eight exam domains to it

Your checkpoint

A single-page attack-to-control matrix covering all eight Domain 1 attack categories, each with at least two mapped defenses, scored against a 20-question self-quiz (target 80%+).

Week 2

Network Attacks and Defense Strategies & Network Perimeter Security

  • Distinguish firewall types (packet-filtering, stateful, proxy, NGFW) and state the deployment position best suited to each

  • Configure and validate a sample ACL rule set that enforces a default-deny posture for a three-zone network

  • Describe IDS vs IPS placement, detection methods (signature, anomaly, protocol) and the trade-offs of each

  • Sequence the steps of a DMZ design and justify which services belong in each zone

Your checkpoint

A written perimeter design of a three-zone network (Internet, DMZ, internal) including ACL logic, firewall type per layer, and IDS/IPS placement with a rationale paragraph per choice.

Week 3

Network Perimeter Security & Administrative and Technical Network Security

  • Compare VPN technologies (IPsec, SSL/TLS, site-to-site vs remote access) and select the appropriate one for three stated business scenarios

  • Apply hardening baselines to network devices: disable unused services and ports, enforce AAA, lock down management access

  • Implement network segmentation and VLAN design that separates user, server, and management traffic

  • Explain identity and access management controls - least privilege, role separation, MFA, and privileged access management

Your checkpoint

A device-hardening checklist for routers, switches, and firewalls with at least 25 verifiable line items, plus a segmented VLAN/IP plan for a sample 200-user organization.

Week 4

Endpoint Security (Windows, Linux, Mobile, IoT)

  • Harden a Windows host baseline: patch policy, service reduction, local policy, AppLocker/allowlisting, and logging

  • Harden a Linux host baseline: file permissions, sudo policy, service minimization, kernel and SSH configuration

  • Compare endpoint protection approaches - signature AV, EDR, application allowlisting, and patching - and state the gap each one leaves

  • List the controls specific to mobile (MDM, containerization, BYOD policy) and IoT/OT (network isolation, default-credential elimination, firmware management)

  • Explain endpoint hardening for servers, BYOD endpoints, and endpoints used for remote work

Your checkpoint

Two side-by-side hardening baselines (Windows and Linux) of at least 20 checks each, with the verification command or GUI path recorded for every check.

Week 5

Endpoint Security (Windows, Linux, Mobile, IoT) & Application and Data Security

  • Apply secure coding and application security principles: input validation, output encoding, authentication and session management, error handling

  • Explain database security controls - encryption at rest and in transit, least-privilege accounts, and injection defenses

  • Describe data classification, handling, retention, masking, and DLP controls across data states (at rest, in motion, in use)

  • Illustrate how web-application attacks (XSS, SQLi, CSRF, file inclusion) map to defenses at the WAF, code, and database layers

Your checkpoint

An application-and-data security control table mapping six OWASP-class weaknesses to at least two defenses each, plus a data classification scheme with handling rules for three tiers.

Week 6

Enterprise Virtual, Cloud, and Wireless Network Security

  • Differentiate the shared-responsibility split between provider and customer across IaaS, PaaS, and SaaS

  • Describe virtualization security controls: hypervisor hardening, VM isolation, snapshot and image governance, and sprawl control

  • Explain wireless security: WPA2/WPA3 vs legacy WEP/WPA, 802.1X/EAP authentication, rogue AP and evil-twin detection, and guest network separation

  • Select controls for securing a hybrid cloud network edge - segmentation, encryption in transit, and logging

  • Explain SDN/NFV and virtual network security implications

Your checkpoint

A cloud responsibility matrix for IaaS, PaaS, and SaaS across six control areas, plus a wireless security standard covering authentication, encryption, guest access, and rogue-AP response.

Week 7

Network Traffic and Log Monitoring and Analysis

  • Identify the log sources that matter (firewall, IDS/IPS, proxy, DNS, DHCP, authentication, endpoint, cloud audit) and what each uniquely reveals

  • Explain SIEM workflow: collection, normalization, correlation rules, alerting, and tuning to reduce false positives

  • Read a packet capture and distinguish normal from suspicious patterns (port scans, beaconing, data exfiltration, ARP spoofing)

  • Apply traffic-analysis baselines and anomaly thresholds to detect deviations

  • Describe network behavior analysis metrics and how to escalate an alert into an incident

Your checkpoint

A log-source coverage map naming at least eight log sources, the questions each answers, and two correlation rules written in plain language with expected false-positive sources noted.

Week 8

Incident Response, Forensics, Business Continuity, Risk and Threat Assessment & Administrative and Technical Network Security

  • Sequence the incident response lifecycle and produce a role-assigned task list for the first 24 hours of a ransomware incident

  • Describe forensic process: evidence identification, order of volatility, chain of custody, imaging, and hashing

  • Explain business continuity and disaster recovery components - BIA, RTO, RPO, backup strategy, and alternate site types

  • Perform a qualitative risk assessment: identify assets, threats, vulnerabilities, and score risk with a defined matrix

  • Apply threat modeling and threat intelligence fusion to prioritize remediation

Your checkpoint

A complete incident response playbook for one scenario (ransomware or data exfiltration) including detection triggers, containment steps, evidence handling, notification path, and a risk register of ten scored entries.

Milestones

Week 2: Score 80%+ on a 40-question mixed quiz over Domains 1 and 3, and explain the attack lifecycle and perimeter design out loud without notes.

Week 4: Complete the Windows and Linux hardening baselines and pass a 30-question quiz over Domains 1-4 at 80%+.

Week 6: Produce the cloud responsibility matrix and wireless standard, and score 75%+ on a 50-question cumulative practice exam.

Week 8: Score 85%+ on a full-length timed practice exam with no domain below 70%, and have all eight deliverables assembled in one study portfolio.