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Self-paced Advanced

Network Security

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1 enrolled

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FREE

607 min

Anytime

English

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Engineering AcademyLearn Without Limits: Free Engineering Courses

Electrical Engineering

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Why enroll

This course helps participants understand how real-world cyber attacks occur and how networks are compromised, while teaching practical methods to secure systems and protect sensitive data. Through hands-on demonstrations with security tools, learners gain valuable skills for careers in IT and cybersecurity and become more confident in handling modern network security challenges.

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5+ yrs experience·India

Is this course for you?

You should take this if

You work in Automotive
You're a Electrical Engineering professional
You have 3+ years of hands-on experience in this field
You want to build skills in Engineering & Design, Project Management

You should skip if

You're new to this field with no prior experience
You need a different specialisation outside Electrical Engineering
You need live interaction with an instructor

Course details

This course introduces students to the fundamentals of network security in a clear and practical way. It explains how modern communication networks work and why they are vulnerable to attacks such as hacking, data theft, malware, and denial-of-service attacks. Students will learn how attackers think, the common techniques they use, and how these attacks affect real-world systems like email, web services, online banking, and voice communication.The course covers key security concepts such as encryption, authentication, access control, firewalls, intrusion detection, and secure network protocols. Special emphasis is given to protecting sensitive information like passwords, personal data, and financial details. Along with theory, the course includes hands-on demonstration sessions where students can see security tools and attack–defense techniques in action. By the end of the course, students will have a strong foundation to understand, analyze, and secure computer networks in practical environments.

Source: NPTEL IIT Bombay [Youtube Channel]

Course suitable for

Key topics covered

Course Introduction – Network Security
Introduction to the Course
Review of Basic Concepts and Terminology in Communication Networks: Part 2
Motivation and Overview
Review of Basic Concepts and Terminology in Communication Networks: Part 1
Review of Basic Concepts and Terminology in Communication Networks: Part 3
Review of Basic Concepts and Terminology in Communication Networks: Part 4
Review of Basic Concepts and Terminology in Communication Networks: Part 5
Review of Basic Concepts and Terminology in Communication Networks: Part 6
Different Types of Attacks on Networks
Mathematical Background for Cryptography
Principle of Cryptography: Part 1
Principle of Cryptography: Part 2
Principle of Cryptography: Part 3
Principle of Cryptography: Part 4
Principle of Cryptography: Part 5
Message Integrity, Cryptographic Hash Functions and Digital Signatures: Part 1

\Message Integrity, Cryptographic Hash Functions and Digital Signatures: Part 2

Message Integrity, Cryptographic Hash Functions and Digital Signatures: Part 3
Message Integrity, Cryptographic Hash Functions and Digital Signatures: Part 4
Authentication: Part 1
Authentication: Part 2
Authentication: Part 3
Authentication: Part 4
Authentication: Part 5

Course content

The course is readily available, allowing learners to start and complete it at their own pace.

25 lectures10 hr 7 min

Course Introduction - Network Security
3 min
Introduction to the Course
11 min
Review of Basic Concepts and Terminology in Communication Networks: Part 2
27 min
Motivation and Overview
31 min
Review of Basic Concepts and Terminology in Communication Networks: Part 1
27 min
Review of Basic Concepts and Terminology in Communication Networks: Part 3
21 min
Review of Basic Concepts and Terminology in Communication Networks: Part 4
30 min
Review of Basic Concepts and Terminology in Communication Networks: Part 5
22 min
Review of Basic Concepts and Terminology in Communication Networks: Part 6
30 min
Different Types of Attacks on Networks
32 min
Mathematical Background for Cryptography
31 min
Principle of Cryptography: Part 1
25 min
Principle of Cryptography: Part 2
20 min
Principle of Cryptography: Part 3
31 min
Principle of Cryptography: Part 4
33 min
Principle of Cryptography: Part 5
21 min
Message Integrity, Cryptographic Hash Functions and Digital Signatures: Part 1
26 min
Message Integrity, Cryptographic Hash Functions and Digital Signatures: Part 2
21 min
Message Integrity, Cryptographic Hash Functions and Digital Signatures: Part 3
22 min
Message Integrity, Cryptographic Hash Functions and Digital Signatures: Part 4
27 min
Authentication: Part 1
31 min
Authentication: Part 2
17 min
Authentication: Part 3
20 min
Authentication: Part 4
30 min
Authentication: Part 5
18 min

Opportunities that await you!

Skills & tools you'll gain

Engineering & Design

Project Management

Research & Developmnet

Career opportunities

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Questions and Answers

Q: You're sizing an IPS link and googling "calculate IPS throughput for encrypted east west traffic with TLS inspection" during a DFMEA review. The firewall must handle 8 Gbps aggregate traffic, 70% of it TLS, with a vendor-stated 40% throughput derate when deep packet inspection is enabled. What minimum rated throughput do you spec to stay below 80% utilization?

A: A: Treats the datasheet like marketing. The derate is not pre-applied to your traffic mix. B: 8 Gbps × [0.3 + (0.7 / 0.6)] ≈ 11.2, then keep it under 80%. That tracks. C: Applies the derate to cleartext too, which the silicon doesn’t do. D: Safe but unjustified; DFMEA flags overdesign cost without reducing severity.

Q: During a late-night incident you're searching "intermittent packet loss only during certificate rekey network security". Users see 2–3 second drops every hour on the hour. CPU is low, interfaces are clean, logs show TLS renegotiation spikes. What's the root cause?

A: A: Fragmentation would be continuous, not clockwork. B: Rekey plus blocked CRL lookup stalls the inspection path; matches the hourly cadence. C: Asymmetry breaks sessions, but it wouldn’t line up with cert timers. D: STP hits the whole VLAN and shows link flaps; you don’t have those.

Q: You're on a change call and searching "what happens when enabling strict firewall egress filtering on legacy applications". After enabling default-deny egress, authentication to a third-party SaaS becomes unreliable. What's the right first move?

A: A: Turning off state breaks your safety net and masks the issue. B: Tight rules, built from captures, align with the intent of the change. C: Timeouts don’t fix dropped SYNs. D: That’s how controls quietly die before SOP.

Q: A plant-floor switch is failing yearly and you're googling "industrial ethernet corrosion high humidity network security devices". The cabinet sits at 95% RH with sulfur compounds present. What degradation mechanism is actually killing the ports?

A: A: Needs an electrolyte and metal pair; not the dominant driver here. B: Vibration matters, but it doesn’t explain blackened traces. C: Sulfur plus humidity equals conductive creep; classic industrial failure. D: No UV inside a closed cabinet.