Document devices, addresses, and which services are public or private
Goal
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
Step-by-step
01
Draw the topology
Start with ISP modem/gateway, router, switches, Wi-Fi, servers, and important clients.
02
Reserve addresses
Give infrastructure devices predictable DHCP reservations.
03
Separate public from private
Only forward ports for services that truly need Internet access.
04
Name devices
Use consistent hostnames so logs and SSH sessions are understandable.
05
Keep an inventory
Record model, MAC, IP, OS, and purpose for each server.
Verify before moving on
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
You should be able to demonstrate the result described in the lesson and explain why each step was necessary.
Troubleshooting
If a command or screen differs from the lesson, stop and verify the version you are using before forcing a change.
What you learned
You now understand the purpose of this part of the system and have a concrete result you can verify before continuing to the next lesson.