Free Course
Basic Network Course
A free beginner course covering IP addresses, DNS, ports, HTTP/HTTPS, and online privacy. Pass the quiz to earn your certificate.
6 lessons About 45–60 minutes Certificate available
Course outline
1What Is a Computer Network?
Learn how devices connect and share information.
2IP Addresses Explained
Understand public and private IPs, IPv4, and IPv6.
3How DNS Works
Learn how domain names become IP addresses.
4Ports and Protocols
Discover how ports and protocols deliver the right traffic.
5Routers, Gateways, and NAT
See how your home router connects you to the internet.
6Network Privacy and Security Basics
Protect your IP, traffic, and online identity.
Ready for your certificate?
Finish the lessons, then take the final quiz. Score 75% or higher to unlock a printable certificate.
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