Advertisement
IT
Computer Networking - Digital Network Security
1.5-3hrs
beginner levelThis free online digital security training in computer networking focuses on digital network security. Global connectivity is a part of modern life, so it is easy to forget the dangers associated with connectivity, as data stored in cyberspace is vulnerable to data theft. This makes network security skills invaluable. Learn the basics of network architecture, security management and protocols used in modern network security practices.
read more
Computer Networking - Digital Network Security
In this free training course, gain a better understanding of network architecture, protocols and digital security.
This free online digital security training in computer networking focuses on digital network security. Global connectivity is a part of modern life, so it is easy to forget the dangers associated with connectivity, as data stored in cyberspace is vulnerable to data theft. This makes network security skills invaluable. Learn the basics of network architecture, security management and protocols used in modern network security practices.
Course description
Course moduleA short ad will play before each lesson.
Module 16 Lessons
Defining Network Infrastructure and Network Security
Now that you know the tools, we will teach you what you need to know to use them all together, appropriately, to build a functional, secure network.
1.Learning Outcomes
Continue Learning
2.Network Security Protocols
Continue Learning
3.Custom RRAS Configuration
Continue Learning
4.Firewalls and Network Security
Continue Learning
5.Proxy Servers and Security Systems
Continue Learning
6.Lesson Summary
Continue Learning
Module 21 Lessons
Course assessment
Related Articles
Coursera’s New Deal with Google Could Cost the Company Millions
According to Coursera CFO, the new terms represent a significant “shift”. Let’s dig into the numbers.
Coursera Q4 2025: 197M Learners, ~$197M Revenue, ~$27M in Losses
On Feb 5, 2026, Coursera released its Q4 2025 results. It was the first report since announcing the Udemy merger, which Dhawal Shah, Class Central founder, recently analyzed (in 5000+ words!).
Coursera’s stock barely moved after the announcement and is currently at ~$6, down 87% from its opening day price in 2021. Here’s a quick review of its last 2025 quarter.
More Users, Struggling Segments
Coursera’s Q4 revenue was ~$197M, up 10% YoY, but growth has been flat since Q2.
Consumer revenue saw
Scaler Academy’s Big Lie: How India’s EdTech Darling Inflated Revenue by 15x
Scaler Academy projected $200M in revenue but delivered only a fraction. Class Central’s exclusive analysis reveals another major EdTech deception in India
Harvard CS50 Guide: How to Pick the Right Course (with Free Certificate)
In 2025, Harvard CS50 offers 10 free certificate courses on topics such as computer science, Python, and AI.
Udemy Earns More, Pays Instructors Less: Class Central Exclusive
Despite assurances of sustained instructor earnings, Udemy’s policy changes delivered a $30 million pay cut, sacrificing creator income to bolster its stock value.
Coursera Lays Off ~150 Staff After Udemy Merger
Coursera announced job cuts on July 6, eight weeks after its merger with Udemy closed. The company didn’t say how many people were affected. The only number it gave was a cost, $8 million to $11 million.
After digging around California’s website, I found that 59 people were laid off: 31 from Coursera’s Mountain View headquarters, and 28 from Udemy’s office in San Francisco. California only requires these notices for jobs in the state, so that isn’t the whole number.
Based on what the two compa
Recommended Related Courses
