In today’s interconnected world, securing networks is more critical than ever. This course empowers learners to gain essential tools and strategies needed to defend computer networks and data from cyber threats. You’ll dive into key topics such as firewalls, VPNs, access controls, and security monitoring, learning how each one contributes to a safe and resilient IT environment.
Network Security Principles
Unlock access to 10,000+ courses with Coursera Plus. Start 7-Day free trial.
Network Security Principles
This course is part of Network Fundamentals Specialization
Instructor: Mai Vang
Included with
Gain insight into a topic and learn the fundamentals.
Beginner level
No prior experience required
2 hours to complete
Flexible schedule
Learn at your own pace
What you'll learn
Learn how access control lists (ACLs) are configured to control network traffic flow
Know how GBP, NAC, and 802.1x set and enforce network security policies
Understand firewalls, VPNs, AAA, and RBAC in securing and managing network access
Skills you'll gain
Details to know
Shareable certificate
Add to your LinkedIn profile
Recently updated!
December 2025
Assessments
6 assignments
Taught in English
See how employees at top companies are mastering in-demand skills
Build your subject-matter expertise
This course is part of the Network Fundamentals Specialization
When you enroll in this course, you'll also be enrolled in this Specialization.
- Learn new concepts from industry experts
- Gain a foundational understanding of a subject or tool
- Develop job-relevant skills with hands-on projects
- Earn a shareable career certificate
There are 6 modules in this course
One of the common approaches to implementing rule-based security is by configuring access control lists (ACLs). ACLs can be configured on a wide range of networking devices like routers, switches, firewalls, and wireless access points. In this topic, you will learn about the use of access control lists to enhance the security of your network.
What's included
2 videos3 readings1 assignment
Network security and access control mechanisms are essential to protect the sensitive data and resources of organizations. Three important components that play a vital role in achieving this objective are Group-Based Policy (GBP), Network Access Control (NAC), and 802.1X. In this module, you will learn about this powerful trio, which forms a comprehensive approach to modern network security.
What's included
2 videos2 readings1 assignment
In this module, you will learn about two essential components of network security that work together to safeguard networks from cyber threats: firewall and the intrusion prevention system (IPS).
What's included
1 video1 reading1 assignment
In this module, you will learn about virtual private network (VPN) technology and how it creates a secure tunnel to offer privacy and safety to users.
What's included
2 videos1 reading1 assignment
To ensure the strong security, confidentiality, and safety of the resources, systems, and data, it is important to provide the right set of access controls to users. By implementing effective access control, businesses can reduce the risk of data breaches, unauthorised modifications, and other security incidents. In this module, you will learn about two popular access control mechanisms: authentication, authorization, and accounting (AAA) and Role-Based Access Control (RBAC).
What's included
1 video1 reading1 assignment
What's included
1 reading1 assignment
Earn a career certificate
Add this credential to your LinkedIn profile, resume, or CV. Share it on social media and in your performance review.
Instructor
Offered by
Explore more from Networking
Cisco Learning and Certifications
Cisco Learning and Certifications
Cisco Learning and Certifications
Why people choose Coursera for their career
Felipe M.
Learner since 2018
"To be able to take courses at my own pace and rhythm has been an amazing experience. I can learn whenever it fits my schedule and mood."
Jennifer J.
Learner since 2020
"I directly applied the concepts and skills I learned from my courses to an exciting new project at work."
Larry W.
Learner since 2021
"When I need courses on topics that my university doesn't offer, Coursera is one of the best places to go."
Chaitanya A.
"Learning isn't just about being better at your job: it's so much more than that. Coursera allows me to learn without limits."
Open new doors with Coursera Plus
Unlimited access to 10,000+ world-class courses, hands-on projects, and job-ready certificate programs - all included in your subscription
Advance your career with an online degree
Earn a degree from world-class universities - 100% online
Join over 3,400 global companies that choose Coursera for Business
Upskill your employees to excel in the digital economy
Frequently asked questions
To access the course materials, assignments and to earn a Certificate, you will need to purchase the Certificate experience when you enroll in a course. You can try a Free Trial instead, or apply for Financial Aid. The course may offer 'Full Course, No Certificate' instead. This option lets you see all course materials, submit required assessments, and get a final grade. This also means that you will not be able to purchase a Certificate experience.
When you enroll in the course, you get access to all of the courses in the Specialization, and you earn a certificate when you complete the work. Your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile.
Yes. In select learning programs, you can apply for financial aid or a scholarship if you can’t afford the enrollment fee. If fin aid or scholarship is available for your learning program selection, you’ll find a link to apply on the description page.
More questions
Financial aid available,