Update configuration.md in V5

Brute-force configuration description

Author: kudriavitsky

content/nap-waf/v5/configuration-guide/configuration.md

@@ -808,12 +808,23 @@ systematic, username/password combinations to discover legitimate authentication
 To prevent brute force attacks, NGINX App Protect WAF monitors IP addresses, usernames, and the number of failed login attempts beyond a maximum threshold.
 When brute force patterns are detected, the NGINX App Protect WAF policy either trigger an alarm or block the attack if the failed
 login attempts reached a maximum threshold for a specific username or coming from a specific IP address.
-To enable brute force protection, at least one login page must be created.
-The login page entity is created separately and is not included in the brute force configuration block
+In order to create a brute force configuration for a specific URL in Nginx App Protect you must first create a User-Defined URL, then a Login Page and finally define the URL element in the Brute Force configuration section.
 
 ---
+### The User-Defined URL example
 
-### Login page policy example
+```json
+"urls": [
+      {
+        "method": "*",
+        "name": "/html_login",
+        "protocol": "http",
+        "type": "explicit"
+      }
+    ],
+```
+
+### Login page example
 
 A login page specifies the login URL that users must pass through to get authenticated. The configuration of a login URL includes the URL itself, the username and passwords parameters and the validation criteria (how we know that a login was successful or failed)
 ```json
@@ -839,18 +850,10 @@ A login page specifies the login URL that users must pass through to get authent
 
 ---
 
-### Brute force policy example
+### Brute force example
 
 Example1: A single brute force configuration is applied universally to all login pages.
 ```json
-{
-    "policy": {
-        "name": "BruteForcePolicy",
-        "template": {
-            "name": "POLICY_TEMPLATE_NGINX_BASE"
-        },
-        "applicationLanguage": "utf-8",
-        "enforcementMode": "blocking",
         "brute-force-attack-preventions" : [
             {
                "bruteForceProtectionForAllLoginPages" : true,
@@ -868,21 +871,11 @@ Example1: A single brute force configuration is applied universally to all login
                "sourceBasedProtectionDetectionPeriod" : 3600
             }
         ]
-    }
-}
 ```
 
 Example2: Different brute force configurations can be defined for individual login pages,
           with each configuration referencing a specific login page.
 ```json
-{
-    "policy": {
-        "name": "BruteForcePolicySpec",
-        "template": {
-            "name": "POLICY_TEMPLATE_NGINX_BASE"
-        },
-        "applicationLanguage": "utf-8",
-        "enforcementMode": "blocking",
         "brute-force-attack-preventions" : [
             {
                "bruteForceProtectionForAllLoginPages" : false,
@@ -902,13 +895,71 @@ Example2: Different brute force configurations can be defined for individual log
                  "method": "*",
                  "name": "/html_login",
                  "protocol": "http"
-		       }
+	       }
             }
         ],
+```
 
-    }
+The following example adds all three of the pieces for a complete example policy.
+```json
+{
+  "policy": {
+    "name": "BruteForcePolicy",
+    "template": {
+      "name": "POLICY_TEMPLATE_NGINX_BASE"
+    },
+    "applicationLanguage": "utf-8",
+    "enforcementMode": "blocking",
+    "urls": [
+      {
+        "method": "*",
+        "name": "/html_login",
+        "protocol": "http",
+        "type": "explicit"
+      }
+    ],
+    "login-pages": [
+      {
+        "accessValidation": {
+          "responseContains": "Success"
+        },
+        "authenticationType": "form",
+        "url": {
+          "method": "*",
+          "name": "/html_login",
+          "protocol": "http",
+          "type": "explicit"
+        },
+        "usernameParameterName": "username",
+        "passwordParameterName": "password"
+      }
+    ],
+    "brute-force-attack-preventions": [
+      {
+        "bruteForceProtectionForAllLoginPages": false,
+        "loginAttemptsFromTheSameIp": {
+          "action": "alarm",
+          "enabled": true,
+          "threshold": 20
+        },
+        "loginAttemptsFromTheSameUser": {
+          "action": "alarm",
+          "enabled": true,
+          "threshold": 3
+        },
+        "reEnableLoginAfter": 3600,
+        "sourceBasedProtectionDetectionPeriod": 3600,
+        "url": {
+          "method": "*",
+          "name": "/html_login",
+          "protocol": "http"
+        }
+      }
+    ]
+  }
 }
 ```
+
 {{< note >}} For further configuration details, see NGINX App Protect WAF Declarative Policy Guide [Declarative Policy guide]({{< ref "/nap-waf/v5/declarative-policy/policy/#policy/brute-force-attack-preventions" >}}). {{< /note >}}
 
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