Learn how to secure your Azure Front Door instance by creating a rate limiting rule that prevents hosts in specific regions like Japan from making more than a set number of requests per minute. Follow this step-by-step guide to configure WAF policy rules in the Azure portal.
Question
Username and password
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Azure Username: [email protected]
Azure Password: xxxxxxxxxx
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The following information is for technical support purposes only:
Lab Instance: 12345678
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You are planning security for Azure Front Door.
You need to create a rule that can be applied to Front Door hosts. The rule must prevent hosts in Japan from making more than 50 requests per minute. You do NOT need to associate the rule to a Front Door instance to complete this task.
To complete this task, sign in to the Azure portal.
Answer
Configure a Web Application Firewall rate-limit rule
The Azure Web Application Firewall rate-limit rule for Azure Front Door controls the number of requests allowed from a particular source IP address to the application during a rate-limit duration.
Stage 1: Create a policy
First create a basic WAF policy
Step 1: On the upper left side of the portal, select Create a resource. Search for WAF, select Web Application Firewall, then select Create.
Step 2: On Create a WAF policy page, Basic tab, enter
Step 3: Select Review + create, then select Create.
Stage 2; Create a rate-limit rule
Step 1: Select Custom rules > Add custom rule.
Step 2: Enter the information required to create a rate-limit rule:
Custom rule name: Enter the name of the custom rule, such as rateLimitRule.
Rule type: Select Rate limit.
Priority: Enter the priority of the rule, such as 1.
Rate limit duration: Select 1 minute.
Rate limit threshold (requests): Enter 50
Step 3: In Conditions, enter the information required to specify a match condition to identify requests. For Match type, select Geo location, for Value select JP (for Japan).
Match type: Geo Location.
Operation: Selecr is.
Match values: JP
Note: To create a geo-filtering custom rule in the Azure portal, select Geo location as the Match Type, and then select the country/region or countries/regions you want to allow/block from your application.
Step 4: For Action, select Block.
Rate-limit rules onlt support Log and Block actions. Allow isn’t supported.
Step 5: Select Add.
Step 6: Select Save.
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