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This is a step-by-step

Step 1: Name your Rule

When naming your firewall it is best practice to use a name that encapsulates the rule.

Example:

Step 2: Set Matching Rule

The fields below reflect a rule that applies to the United States.

Example:

Expression: (http.user_agent eq "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:101.0) Gecko/20100101 Firefox/101.0")

Step 3: Select Action

This block action will be executed with every request matching the fields above.

Example:

Step 4: Deploy Rule

Select the Deploy firewall rule to have all your changes reflected instantly.

Step 5: Check Rule Deployment

Client View: Visit host from a device that matches the rules. Example: