Summary
This section is for the mental models behind networking. These notes explain how addressing, DNS, routing, and protocols fit together so troubleshooting feels more logical.
What belongs here
- IP addressing and subnet basics
- DNS, DHCP, gateway, and routing ideas
- ports and protocols
- concepts that support later lab work
How to use this section
- Start here when troubleshooting depends on understanding how the network should behave
- Use Guides for practical checks and troubleshooting flows
- Use Commands for quick syntax and verification steps
Available concepts
- IP Addressing and Subnets
- DNS, DHCP, and Default Gateway
- Ports, Protocols, and Layers
- Routing and NAT
- Firewalls and Allowed Ports