8. Azure Virtual Network and NSG Basics
VNet = private network in Azure. Subnet + NSG = traffic rules. Port 22 open to world = danger.
What you will learn in this chapter
- What a VNet and subnet are
- NSG allow / deny idea
- Common ports (22, 80, 443)
- Beginner secure defaults
- Practice + Volume 1 checkpoint
Fictional labs
Labs use fictional India shops (Mauli Dairy Pune, Raja Traders Nagpur). Not real Azure bills. Always check Microsoft’s current free limits.
Concepts in this chapter
The chapter recap is at the end of the last concept page.