Routing and NAT
On This Lesson 4 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
understand how traffic leaves and enters the network.
Planned topics
- Route tables decide where traffic goes by destination range.
- An internet gateway gives public subnets two-way internet access; private subnets use NAT for outbound-only access.
- NAT is a cost and a failure point: one per zone for resilience, and data transfer is billed.
- Prefer private endpoints (ARC-013-L05) over sending traffic to cloud services via NAT.
- Keep routing simple; every exception is documentation to maintain.
Draft outline details
Demonstration
a route table for a private subnet: local range stays local; default route goes to the NAT in the same zone.
Check your understanding
Why is outbound traffic from private subnets sent through NAT?
Show answer
It lets them reach out without being reachable from the internet.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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