Free course · Security & Infrastructure
Computer Networking Starter
A free introduction to everyday networks: IP addresses, routers and switches, setting up Wi-Fi, troubleshooting a connection, basic security and documenting a small office network.
Free · self-study · no certificate
About 5 hours
2 modules · 5 lessons
What you will be able to do
- Find and read a device's IP configuration
- Set up and secure a small Wi-Fi network
- Troubleshoot a connection step by step with ping and DNS checks
Who it's for
- Beginners who manage home or office internet
- Staff who are the 'IT person' in a small organisation
Before you start
Basic computer use.
Module 1 · about 120 minutes
How Networks Connect
Addresses and devices, Wi-Fi setup and basic troubleshooting.
- Explain IP addresses and network devices
- Diagnose a 'no internet' problem
Module 2 · about 80 minutes
Secure, Documented Networks
Security basics and small office network design.
- Harden a router
- Draw and document a small network
Further learning
- Cisco Packet Tracer (Cisco Networking Academy) — The network simulation tool used for the Intermediate and Advanced labs, with related Networking Academy training.
- RFC 1918: Address Allocation for Private Internets — The standard that defines the private IPv4 ranges used inside offices.
- Wireshark documentation — Guides for the packet analyser used in the Advanced troubleshooting module.
- CompTIA Network+ — A vendor-neutral networking certification; check the current exam objectives before preparing.
Continue with a full program
- Computer Networking — Design and maintain networks for offices, schools, and organizations.
- Computer Maintenance — Diagnose and repair computers, install systems, and keep labs running smoothly.
- Cybersecurity — Protect systems and data from attacks with practical security techniques and tools.
Want the full Computer Networking program?
This free course is an introduction. The full program is taught live by an instructor, with practical assignments, assessments, projects and a certificate.
See the Computer Networking program