Computer Networking
How computers talk: IP addresses, the OSI layers, packets and routing, TCP/UDP, DNS, HTTP and TLS, NAT, firewalls, and sockets. Build network logic in Python.
Every lesson runs real code in your browser, checked the moment you submit. No installing anything, no setup, no waiting.
Start Computer Networking freeWhat this course covers
- What is a Network?
- The Internet: A Network of Networks
- The OSI and TCP/IP Layers
- IP Addresses
- Subnets and CIDR
- MAC Addresses, Switches and Routers
- Packets and Routing
- TCP vs UDP
- Ports and Sockets
- The TCP 3-Way Handshake
- DNS: Names to Numbers
- HTTP and HTTPS
- TLS: How HTTPS Stays Private
- NAT and Private Networks
- DHCP: Automatic Addresses
- Routing Tables
- Firewalls and Network Security
- VPNs: Private Tunnels
- Sockets in Python (Capstone)
- Network Tools
- Wi-Fi and Wireless Networking
- IPv6: The Next Generation
- Network Troubleshooting Workflow
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