Chapter 12: Networking

Read and configure a host's network with ip and NetworkManager, manage names and DNS, and troubleshoot connections layer by layer.

What you will learn

• Explain address, prefix, gateway and DNS, and inspect them with ip, ping and ss.
• Create and modify persistent connection profiles with nmcli.
• Set the host name and explain name resolution through /etc/hosts and DNS.
• Troubleshoot a connection layer by layer and read the failure messages.

Sections

1. How hosts find each other on a network
2. Exercise: Map the network
3. Configuring the network with NetworkManager
4. Exercise: Configure a static connection
5. Host names and name resolution
6. Exercise: Names, hosts and DNS
7. Troubleshooting network problems
8. Exercise: The service nobody can reach
9. Exercise: Networking review
10. Linux networking quiz
11. Linux networking cheat sheet