Web Application Firewall：Configure CloudMonitor notifications

Prerequisites

Web services are added to WAF on the Website Configuration page. For more information, see Website configuration overview.

Create an alert contact and an alert contact group

1. Log on to the CloudMonitor console.

2. In the left-side navigation pane, choose Alerts > Alert Contacts.

3. Create an alert contact.

   1. On the Alert Contacts tab, click Create Alert Contact.

   2. In the Set Alert Contact panel, enter the name, email address, and webhook URL of the alert contact. Retain the default values of other parameters.

      Note

      Make sure that the Language of Alert Notifications parameter is set to the default value Automatic. This indicates that CloudMonitor automatically selects the language of alert notifications based on the language that you use to create your Alibaba Cloud account.

   3. Verify the parameter values and click OK.

4. Create an alert contact group.

   1. On the Alert Contact Group tab, click Create Alert Contact Group.

   2. In the Create Alert Contact Group panel, specify a name for the alert contact group that you want to create and select alert contacts that you want to add to the group. Then, click Confirm.

5. Add multiple alert contacts to an alert contact group.

   1. On the Alert Contacts tab, select the alert contacts that you want to add to an alert contact group and click Add to Contact Group.

   2. In the Add to Contact Group dialog box, select the alert contact group to which you want to add the alert contacts and click OK.

   After you create alert contacts, create an alert contact group, and add the alert contacts to the alert contact group, the alert contacts can receive alert notifications. Alert contacts must check alert notifications and handle alerts at the earliest opportunity.

Configure monitoring and alerting for WAF security events

1. Log on to the CloudMonitor console.

2. In the left-side navigation pane, choose Event Center > System Event.

3. On the Event Monitoring tab, click Old Event Alarm Rules in the upper-right corner. Then, click Create Alert Rule. Choose Alert rules for legacy system events are still created in the dialog box that appears.

4. In the Create/Modify Event-triggered Alert Rule panel, configure the parameters and click Ok. The following table describes the parameters.

   Parameter	Description
   Alert Rule Name	The name of the alert rule.
   Product Type	The Alibaba Cloud service for which you want to create the alert rule. Select WAF.
   Event Type	The type of the security events to which you want to apply the alert rule. Valid values: Attack, Exceed, and Event.
   Event Level	The severity level of the security events to which you want to apply the alert rule. The severity level of all security events that are detected by WAF 3.0 is CRITICAL.
   Event Name	The name of the security events to which you want to apply the alert rule. Note In the Event Name drop-down list, security events whose names contain v3 are detected by WAF 3.0 and the other security events are detected by WAF 2.0. For more information about the security events that can be detected by WAF 2.0, see Security events that can be detected.
   Keyword Filtering	The keywords that are used in the alert rule. Valid values: Contains any of the keywords: If the content of a security event contains any of the specified keywords, CloudMonitor sends an alert notification. Does not contain any of the keywords: If the content of a security event contains none of the specified keywords, CloudMonitor sends an alert notification.
   SQLFilter	The SQL statement that you want to use for filtering.
   Resource Range	The range of resources to which you want to apply the alert rule. Valid values: All Resources and Application Groups.
   Notification Method	Alert Contact Group: The alert contact groups to which you want to send alert notifications. For more information, see Create an alert contact and an alert contact group. Notification Method: The severity level and notification methods of the alerts that can be triggered. Valid values: Critical (Text Message + Email + Webhook) Warning (Text Message + Email + Webhook) Info (Email + Webhook)
   SMQ	The Simple Message Queue (formerly MNS, also called SMQ) queue to which the alerts are delivered.
   Function Compute	The Function Compute function to which the alerts are delivered.
   URL Callback	The callback URL to which alert notifications are sent. Make sure that the URL can be accessed over the Internet. CloudMonitor sends POST requests to push the alert notifications. Only HTTP is supported. For more information about how to configure alert callbacks, see Configure callbacks for system event-triggered alerts (old).
   Simple Log Service	The Simple Log Service Logstore to which the alerts are delivered.
   Mute For	The interval at which CloudMonitor resends an alert notification before an existing alert is cleared. Valid values: 5 Minutes, 15 Minutes, 30 Minutes, 60 Minutes, 3 Hours, 6 Hours, 12 Hours, and 24 Hours.

   After you configure an alert rule, the contacts that you specify in the alert rule can receive alert notifications when security events are detected by WAF on protected objects.

   On the Event Monitoring tab, you can select WAF from the cloud service drop-down list, select a security event whose name contains v3 from the SelectEvent Name drop-down list, and then click Search to query security events that are detected by WAF 3.0.

Configure monitoring and alerting for WAF metrics

1. Log on to the CloudMonitor console.

2. In the left-side navigation pane, choose Alerts > Alert Rules.

3. On the Alert Rules page, click Create Alert Rule.

4. In the Create Alert Rule panel, configure the parameters and click Confirm. The following table describes the parameters.

   Parameter	Description
   Product	The Alibaba Cloud service for which you want to create the alert rule. Select WAF3.0 from the drop-down list.
   Resource Range	The range of the resources to which you want to apply the alert rule. Valid values: All Resources: The alert rule applies to all resources of WAF 3.0. Application Groups: The alert rule applies to all resources in the specified application group of WAF 3.0. Instances: The alert rule applies to the specified resources of WAF 3.0.
   Rule Description	The condition of the alert rule. If a metric meets the specified condition, an alert is triggered. To specify a condition, perform the following steps: Click Add Rule. In the Configure Rule Description panel, configure the Alert Rule, Metric Type, Metric, and Threshold and Alert Level parameters. Then, click OK. Note For more information about WAF 3.0 metrics that can be monitored, see Metrics that can be monitored.
   Mute For	The interval at which CloudMonitor resends an alert notification before an existing alert is cleared. Valid values: 1 Minutes, 5 Minutes, 15 Minutes, 30 Minutes, 60 Minutes, 3 Hours, 6 Hours, 12 Hours, and 24 Hours. An alert is triggered when the condition of an alert rule is met. If the alert is retriggered within the mute period, CloudMonitor does not resend an alert notification. If the alert is not cleared after the mute period ends, CloudMonitor resends an alert notification.
   Effective Period	The period during which the alert rule takes effect. CloudMonitor monitors the specified resources and generates alerts only during the effective period.
   Alert Contact Group	The alert contact groups to which you want to send alert notifications. For more information, see Create an alert contact and an alert contact group.
   Alert Callback	The callback URL to which alert notifications are sent. Make sure that the URL can be accessed over the Internet. CloudMonitor sends POST requests to push the alert notifications. Only HTTP is supported. For more information about how to configure an alert callback, see Use the alert callback feature to send notifications about threshold-triggered alerts. Note You can click Advanced Settings to configure this parameter.
   Auto Scaling	If you turn on Auto Scaling, the specified scaling rule takes effect when an alert is triggered. You must configure the Region, ESS Group, and ESS Rule parameters. For more information about how to create a scaling group, see Manage scaling groups. For more information about how to create a scaling rule, see Manage scaling rules. Note You can click Advanced Settings to configure this parameter.
   Log Service	If you turn on Log Service, the alert information is written to the specified Logstore in Simple Log Service when an alert is triggered. You must configure the Region, ProjectName, and Logstore parameters. For more information about how to create a project and a Logstore, see Getting started. Note You can click Advanced Settings to configure this parameter.
   Simple Message Queue (formerly MNS) - Topic	If you turn on Simple Message Queue (formerly MNS) - Topic, the alert information is written to the specified topic in Simple Message Queue (formerly MNS) when an alert is triggered. You must configure the Region and topicName parameters for the Simple Message Queue (formerly MNS) topic. For more information about how to create a topic, see Create a topic. Note You can click Advanced Settings to configure this parameter.
   Method to handle alerts when no monitoring data is found	The method that is used to handle alerts when no monitoring data exists. Valid values: Do not do anything (default value.) Send alert notifications Treated as normal Note You can click Advanced Settings to configure this parameter.
   Tag	The tag of the alert rule. A tag consists of a tag name and a tag value.

   After you create an alert rule, you can view the rule on the Alert Rules page. You can also perform the following operations to search for an alert rule created for a specific metric: Select WAF3.0 from the Product drop-down list and resource from the Metric Name drop-down list. Then, select the metric from the metrics that are displayed on the right side.

   Note

   The following list describes the WAF metrics that can be monitored by CloudMonitor:

   • If you select domain from the Metric Name drop-down list, the metrics that are displayed on the right side are WAF 2.0 metrics that can be monitored.

   • If you select resource from the Metric Name drop-down list, the metrics that are displayed on the right side are WAF 3.0 metrics that can be monitored. For more information about WAF 3.0 metrics that can be monitored, see Metrics that can be monitored.

   • If you select Instance from the Metric Name drop-down list, the metrics that are displayed on the right side are Hybrid Cloud WAF metrics that can be monitored. Metrics whose names contain v3 are WAF 3.0 metrics, and the other metrics are WAF 2.0 metrics.

Security events that can be detected

You can use CloudMonitor to configure monitoring and alerting for security events that occur on protected objects. For more information, see Configure monitoring and alerting for WAF security events.

Metrics that can be monitored

You can use CloudMonitor to configure monitoring and alerting for the following metrics. For more information, see Configure monitoring and alerting for metrics.