← Back to the catalogueNetwork Security
Classroom . Online . Hybrid
Mode
Course overview
A defensive networking course on designing, hardening and monitoring a secure network. The course covers protocol-level weaknesses and the controls that answer them: segmentation, firewall policy, VPN design, intrusion detection, logging and access control, with configuration practice on pfSense and open-source tooling.
Learners design and defend a segmented network fora sample organisation.
Who it is for
- Network and system administrators
- Security operations staff
- IT support engineers moving into security
- Infrastructure teams
Prerequisites
TCP/IP networking fundamentals and basic Linux.
How it runs
Learn → Practise → Build → Experience → Demonstrate, ending in a capstone. Delivered by practitioners from the engineering bench, in Madurai, Coimbatore and online.
Final project
Secure Network Design and Defence Report
Programme sheet
The printed sheet carries the full module breakdown, labs, project work and certification path. Fees, dates and formats for the next intake are confirmed by the education team on enquiry.
Learning outcomes
01
Explain protocol weaknesses at each network layer.
02
Design segmented networks with defined trust zones.
03
Write and audit firewall rule sets.
04
Deploy site-to-site and remote-access VPNs.
05
Detect intrusions with Snort or Suricata.
06
Harden switches, routers and endpoints.
07
Respond to and document a network incident.
Module structure
8 modulesModule 01
Network Threat Model
OSI and TCP/IP review . Threat actors . Zero trust principles . Defence in depth
Module 02
Segmentation and Design
VLANs . DMZ design . East-west traffic . Subnetting for security . Micro-segmentation
Stateful inspection . NAT . Policy review . Rule design . Application layer filtering
Lab
pfSense Policy Build . Change Control
Module 04
VPN and Encryption
IPSec . WireGuard . Key management . SSL/TLS . Remote access design
Lab
Site-To-Site Tunnel . Certificate Basics
Module 05
Intrusion Detection
Signature vs anomaly . Rule writing . Network taps . Snort and Suricata . Tuning false positives
Module 06
Monitoring and Logging
Flow data . Syslog . SIEM basics . Alert design . Retention . Baselines
Tools — Wireshark, ELK Stack
Module 07
Device Hardening
Secure configuration . Management planes . Port security . 802.1X . Patch discipline . Backups
Module 08
Incident Response
Detection to containment . Evidence capture . Eradication . Recovery . Post-incident review
Assessment & certification
Module assignments and labs
25%
Final project and review
40%
Learners who complete all modules, submit the final project and clear the review receive a course completion certificate from Kaizen Infinities Private Limited. Project work is documented for the learner's portfolio, and interview preparation is included in the closing sessions.
Career outcomes . Roles this programme prepares for
Network Security EngineerSecurity AdministratorSOC AnalystInfrastructure EngineerFirewall Administrator
