Azure Firewall for centralized security - Step-by-Step Execution

Process Flow - Azure Firewall for centralized security

Start: Deploy Azure Firewall

↓

Configure Firewall Rules

↓

Route Traffic via Firewall

↓

Firewall Inspects Traffic

↓

Allow or Deny Based on Rules

↓

Log and Monitor Traffic

↓

End

This flow shows how Azure Firewall is deployed, configured with rules, routes traffic through it, inspects traffic, enforces rules, and logs activity for centralized security.

Execution Sample

Azure

1. Deploy Azure Firewall in VNet
2. Create Application and Network Rules
3. Configure Route Table to send traffic to Firewall
4. Firewall inspects and filters traffic
5. Logs are collected for monitoring

This sequence sets up Azure Firewall to control and monitor network traffic centrally.

Process Table

Step	Action	Configuration State	Traffic Behavior	Logs Generated
1	Deploy Azure Firewall	Firewall deployed in VNet	No traffic filtered yet	No logs
2	Create Rules	Rules defined (allow HTTP, deny others)	Traffic will be filtered per rules	No logs yet
3	Configure Route Table	Route sends traffic to Firewall	Traffic flows through Firewall	No logs yet
4	Traffic Inspection	Firewall active with rules	HTTP allowed, others denied	Logs start recording allowed/denied
5	Monitor Logs	Firewall running with monitoring	Traffic filtered continuously	Logs show traffic details
6	End	Firewall operational	Traffic filtered as per rules	Logs available for audit

💡 Firewall deployed and configured; traffic is filtered and logged for centralized security.

Status Tracker

Variable	Start	After Step 1	After Step 2	After Step 3	After Step 4	Final
Firewall State	Not deployed	Deployed	Deployed with rules	Deployed with rules and routing	Active and filtering	Active and filtering
Traffic Flow	Direct to VMs	Direct to VMs	Will be filtered	Routed through Firewall	Filtered by rules	Filtered by rules
Logs	None	None	None	None	Recording traffic	Recording traffic

Key Moments - 3 Insights

Why does traffic need a route table to send it through the Azure Firewall?

Because without routing, traffic goes directly to resources and bypasses the firewall. Step 3 in the execution_table shows routing configuration enabling traffic to flow through the firewall.

What happens if no rules are defined in the firewall?

Without rules (Step 1 and 2), the firewall cannot allow or deny traffic properly, so traffic might be blocked by default or flow unrestricted depending on default settings. Step 2 shows rules creation is essential.

How do logs help in centralized security?

Logs record allowed and denied traffic (Step 4 and 5), helping monitor and audit network activity centrally to detect threats or misconfigurations.

Visual Quiz - 3 Questions

Look at the execution_table, at which step does traffic start being filtered by the firewall?

A Step 2

B Step 4

C Step 3

D Step 5

💡 Hint

Check the 'Traffic Behavior' column in execution_table rows for when filtering begins.

According to variable_tracker, what is the state of 'Logs' after Step 3?

A None

B Recording traffic

C Partial logs

D Logs deleted

💡 Hint

Look at the 'Logs' row and the column 'After Step 3' in variable_tracker.

If the route table is not configured (Step 3 skipped), what happens to traffic flow?

A Traffic is routed through firewall anyway

B Traffic is blocked completely

C Traffic flows directly to resources, bypassing firewall

D Traffic is logged but not filtered

💡 Hint

Refer to key_moments explanation about routing importance and variable_tracker 'Traffic Flow' state.

Concept Snapshot

Azure Firewall protects your network by filtering traffic centrally.
Deploy it in a virtual network.
Create rules to allow or deny traffic.
Use route tables to send traffic through the firewall.
Firewall inspects traffic and logs activity for monitoring.

Full Transcript

Azure Firewall is a cloud service that protects your network by controlling traffic centrally. First, you deploy the firewall inside a virtual network. Then, you create rules that specify which traffic is allowed or denied. Next, you configure route tables so that network traffic flows through the firewall. The firewall inspects this traffic and applies the rules to allow or block it. Finally, it logs all traffic activity so you can monitor and audit your network security. This process ensures centralized security management for your cloud infrastructure.