docs(mongodbatlas): refactor getting started and auth (#8776)

docs/tutorials/mongodbatlas/authentication.md

@@ -2,44 +2,49 @@
 
 MongoDB Atlas provider uses [HTTP Digest Authentication with API key pairs consisting of a public key and private key](https://www.mongodb.com/docs/atlas/configure-api-access/#grant-programmatic-access-to-service).
 
-## Authentication Methods
 
-### Command-Line Arguments
+## Required Permissions
 
-```bash
-prowler mongodbatlas --atlas-public-key <public_key> --atlas-private-key <private_key>
-```
+MongoDB Atlas API keys require appropriate permissions to perform security checks:
 
-### Environment Variables
+- **Organization Read Only**: Provides read-only access to everything in the organization, including all projects in the organization.
+    - To [audit the Auditing configuration for the project](https://www.mongodb.com/docs/api/doc/atlas-admin-api-v2/group/endpoint-auditing), **Organization Owner** permission is required.
 
-```bash
-export ATLAS_PUBLIC_KEY=<public_key>
-export ATLAS_PRIVATE_KEY=<private_key>
-prowler mongodbatlas
-```
+The IP address where Prowler runs must be added to the IP Access List of the MongoDB Atlas organization API key. To skip this step and use the API key across all IP address types, uncheck the "Require IP Access List for the Atlas Administration API" button in Organization Settings. This setting is [enabled by default](https://www.mongodb.com/docs/atlas/configure-api-access/#optional--require-an-ip-access-list-for-the-atlas-administration-api).
 
-## Creating API Keys
+???+ warning
+    To ensure the check `organizations_api_access_list_required` passes, enable the API access list for the organization and add the execution IP to the organization's IP Access List. When running checks from Prowler Cloud, add our IP to the IP Access List.
 
-### Step-by-Step Guide
+![Organization Settings](img/ip-access-list.png)
 
-1. **Log into MongoDB Atlas**
-      - Access the MongoDB Atlas console
 
-2. **Navigate to Access Manager**
-      - Go to the organization or project access management section
+## API Key
 
-3. **Select API Keys Tab**
-      - Click on the "API Keys" tab
+1. **Log into MongoDB Atlas**: Access the MongoDB Atlas console
+2. **Navigate to Access Manager**: Go to the organization access management section:
 
-4. **Create API Key**
-      - Click "Create API Key"
-      - Provide a description for the key
+    - Click "Access Manager" and "Organization Access":
 
-5. **Set Permissions**
-      - Grant minimum required permissions
+        ![Organization Access](./img/organization-access.png)
 
-6. **Save Credentials**
-      - Note the public key and private key
-      - Store credentials securely
+    - Then click the "Applications" tab inside the Access Manager:
 
-For more details about MongoDB Atlas, see the [MongoDB Atlas Tutorial](./getting-started-mongodbatlas.md).
+        ![Project Access](./img/access-manager.png)
+
+3. **Select API Keys Tab**: Click the "API Keys" tab that appears in the image above
+
+4. **Create API Key**: Click "Create API Key" and provide a description
+
+    ![Create API Key](./img/create-api-key.png)
+
+5. **Set Permissions**: Recommend project permissions for enhanced security; modify them after creating the key
+
+    ![Set Permissions](./img/modify-permission.png)
+
+6. **Save Credentials**: Record both the public and private keys, then store them securely
+
+    ![Save Credentials](./img/copy-key.png)
+
+7. **Add IP Access List**: Add the IP address where Prowler runs to the API Key's IP Access List. To skip this step and use the API key for all IP addresses, uncheck the "Require IP Access List for the Atlas Administration API" button in [Organization Settings](#required-permissions), though this is not recommended.
+
+    ![Organization Settings](./img/add-ip.png)