Azure Front Door Waf Configuration and Protection

Azure Front Door WAF configuration and protection is a crucial aspect of securing your web applications.

You can configure Azure Front Door WAF to protect against common web attacks such as SQL injection and cross-site scripting.

Azure Front Door WAF uses a combination of rules and policies to detect and prevent malicious traffic.

With Azure Front Door WAF, you can also configure custom rules to address specific security threats.

Azure Front Door WAF provides real-time threat intelligence to help identify and block new and emerging threats.

This feature is especially useful for protecting against zero-day attacks.

A WAF policy can be configured and associated with one or more Azure Front Door domains for protection, consisting of custom rules and managed rule sets.

You can create a fully customized policy by combining managed and custom rules, with custom rules processed before managed rules. A rule is made of a match condition, a priority, and an action, with supported action types being ALLOW, BLOCK, LOG, and REDIRECT.

Rules within a policy are processed in a priority order, with a smaller integer value denoting a higher priority. After a rule is matched, the corresponding action is applied to the request, and rules with lower priorities aren't processed further.

A web application delivered by Azure Front Door can have only one WAF policy associated with it at a time, but you can have an Azure Front Door configuration without any WAF policies associated with it.

Azure-managed rule sets provide easy protection against common security threats, including cross-site scripting, Java attacks, and SQL injection protection. These rule sets are updated as needed to protect against new attack signatures.

Custom rules are always applied before rules in the Default Rule Set are evaluated, and if a request matches a custom rule, the corresponding rule action is applied. The request is either blocked or passed through to the back end, with no other custom rules or the rules in the Default Rule Set processed.

You can adjust the policy state or configure its mode, depending on the settings, to inspect incoming requests, monitor them, or take actions against requests that match a rule. You can also set the WAF to detect threats without blocking them, which is useful when first enabling the WAF.

Here are the steps to create a WAF policy:

You can add managed rule sets to the WAF policy, including the default rule set and the bot protection rule set, using the Azure CLI.

To associate the WAF policy with the Azure Front Door resource, use the Azure CLI with the following command:

```bash

--name: The name of your Azure Front Door resource.

--resource-group: The resource group for the Azure Front Door resource.

--set: Update the WebApplicationFirewallPolicyLink attribute for the frontendEndpoint with the new WAF policy ID.

```

Policy configuration is a crucial aspect of Azure Front Door WAF. You can configure and deploy all WAF policies by using the Azure portal, REST APIs, Azure Resource Manager templates, and Azure PowerShell.

To create a WAF policy, you can follow the steps outlined in Example 4. First, create a basic WAF policy with the managed Default Rule Set (DRS) by using the Azure portal. On the Basics tab, enter or select the necessary information, including the policy name, subscription, resource group, and policy state.

A WAF policy consists of two types of security rules: custom rules that you created, and managed rule sets that are a collection of Azure-managed preconfigured sets of rules. Custom rules are processed before processing the rules in a managed rule set, and rules within a policy are processed in a priority order.

Here are the supported action types for a rule: ALLOW, BLOCK, LOG, and REDIRECT. You can create a fully customized policy that meets your specific application protection requirements by combining managed and custom rules.

A WAF policy can have only one WAF policy associated with it at a time, but you can have an Azure Front Door configuration without any WAF policies associated with it. If a WAF policy is present, it's replicated to all of our edge locations to ensure consistent security policies across the world.

To configure WAF rules, you can use the Azure portal, REST APIs, or Azure PowerShell. You can also configure and manage Azure WAF policies at scale by using Firewall Manager integration. For more information, see Use Azure Firewall Manager to manage Azure Web Application Firewall policies.

To define your WAF configuration as code, you can use the Azure CLI, Azure PowerShell, Bicep, or Terraform. This approach can help you reuse the same exclusions when updating your WAF rule-set version.

The Web Application Firewall is a crucial component of Azure Front Door, and it's essential to use it correctly to protect your web applications. Azure Web Application Firewall in Azure Front Door is summarized in a best practices article.

Azure Web Application Firewall in Azure Front Door is used to protect web applications from common web exploits and vulnerabilities. This is a key feature of Azure Front Door.

To get the most out of Azure Web Application Firewall, you should follow the best practices outlined in the article. This will help you to configure and use the firewall effectively.