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订阅亚马逊 SNS 公告 GuardDuty

本节提供有关订阅 Amazon SNS（简单通知服务） GuardDuty 以接收有关新发布的查找类型、现有查找类型更新和其他功能变更的通知的信息。通知以 Amazon SNS 支持的所有格式提供。

GuardDuty SNS 会向任何订阅的账户发送有关该 GuardDuty 服务 Amazon 更新的公告。要接收有关您账户中调查发现的通知，请参阅 使用 Amazon CloudWatch Events 创建对 GuardDuty 调查结果的自定义响应。

您可以为 Amazon SQS 队列订阅此通知主题，但您必须使用位于同一区域的主题 ARN。有关更多信息，请参阅《Amazon Simple Queue Service 开发人员指南》中的教程：为 Amazon SQS 队列订阅 Amazon SNS 主题。

您还可以使用 Amazon Lambda 函数在收到通知时触发事件。有关更多信息，请参阅《Amazon Simple Queue Service 开发人员指南》中的使用 Amazon SNS 通知调用 Lambda 函数。

每个区域的 Amazon SNS 主题 ARN 如下所示。

Amazon SNS 消息格式

有关新发现的 GuardDuty 更新通知消息示例如下所示：

{
    "Type" : "Notification",
    "MessageId" : "9101dc6b-726f-4df0-8646-ec2f94e674bc",
    "TopicArn" : "arn:aws:sns:us-west-2:934957504740:GuardDutyAnnouncements",
    "Message" : "{\"version\":\"1\",\"type\":\"NEW_FINDINGS\",\"findingDetails\":[{\"link\":\"https://docs.aws.amazon.com//guardduty/latest/ug/guardduty_unauthorized.html\",\"findingType\":\"UnauthorizedAccess:EC2/TorClient\",\"findingDescription\":\"This finding informs you that an EC2 instance in your Amazon environment is making connections to a Tor Guard or an Authority node. Tor is software for enabling anonymous communication. Tor Guards and Authority nodes act as initial gateways into a Tor network. This traffic can indicate that this EC2 instance is acting as a client on a Tor network. A common use for a Tor client is to circumvent network monitoring and filter for access to unauthorized or illicit content. Tor clients can also generate nefarious Internet traffic, including attacking SSH servers. This activity can indicate that your EC2 instance is compromised.\"}]}",
    "Timestamp" : "2018-03-09T00:25:43.483Z",
    "SignatureVersion" : "1",
    "Signature" : "XWox8GDGLRiCgDOXlo/fG9Lu/88P8S0FL6M6oQYOmUFzkucuhoblsdea3BjqdCHcWR7qdhMPQnLpN7y9iBrWVUqdAGJrukAI8athvAS+4AQD/V/QjrhsEnlj+GaiW+ozAu006X6GopOzFGnCtPMROjCMrMonjz7Hpv/8KRuMZR3pyQYm5d4wWB7xBPYhUMuLoZ1V8YFs55FMtgQV/YLhSYuEu0BP1GMtLQauxDkscOtPP/vjhGQLFx1Q9LTadcQiRHtNIBxWL87PSI+BVvkin6AL7PhksvdQ7FAgHfXsit+6p8GyOvKCqaeBG7HZhR1AbpyVka7JSNRO/6ssyrlj1g==",
    "SigningCertURL" : "https://sns.us-west-2.amazonaws.com/SimpleNotificationService-433026a4050d206028891664da859041.pem",
    "UnsubscribeURL" : "https://sns.us-west-2.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-west-2:934957504740:GuardDutyAnnouncements:9225ed2b-7228-4665-8a01-c8a5db6859f4"
}

解析的 Message 值（去掉转义引号）如下所示：

{
    "version": "1",
    "type": "NEW_FINDINGS",
    "findingDetails": [{
        "link": "https://docs.aws.amazon.com//guardduty/latest/ug/guardduty_unauthorized.html",
        "findingType": "UnauthorizedAccess:EC2/TorClient",
        "findingDescription": "This finding informs you that an EC2 instance in your Amazon environment is making connections to a Tor Guard or an Authority node. Tor is software for enabling anonymous communication. Tor Guards and Authority nodes act as initial gateways into a Tor network. This traffic can indicate that this EC2 instance is acting as a client on a Tor network. A common use for a Tor client is to circumvent network monitoring and filter for access to unauthorized or illicit content. Tor clients can also generate nefarious Internet traffic, including attacking SSH servers. This activity can indicate that your EC2 instance is compromised."
    }]
}

有关 GuardDuty 功能 GuardDuty 更新的更新通知消息示例如下所示：

{
    "Type" : "Notification",
    "MessageId" : "9101dc6b-726f-4df0-8646-ec2f94e674bc",
    "TopicArn" : "arn:aws:sns:us-west-2:934957504740:GuardDutyAnnouncements",
    "Message" : "{\"version\":\"1\",\"type\":\"NEW_FEATURES\",\"featureDetails\":[{\"featureDescription\":\"Customers with high-volumes of global CloudTrail events should see a net positive impact on their GuardDuty costs.\",\"featureLink\":\"https://docs.aws.amazon.com//guardduty/latest/ug/guardduty_data-sources.html#guardduty_cloudtrail\"}]}",
    "Timestamp" : "2018-03-09T00:25:43.483Z",
    "SignatureVersion" : "1",
    "Signature" : "XWox8GDGLRiCgDOXlo/fG9Lu/88P8S0FL6M6oQYOmUFzkucuhoblsdea3BjqdCHcWR7qdhMPQnLpN7y9iBrWVUqdAGJrukAI8athvAS+4AQD/V/QjrhsEnlj+GaiW+ozAu006X6GopOzFGnCtPMROjCMrMonjz7Hpv/8KRuMZR3pyQYm5d4wWB7xBPYhUMuLoZ1V8YFs55FMtgQV/YLhSYuEu0BP1GMtLQauxDkscOtPP/vjhGQLFx1Q9LTadcQiRHtNIBxWL87PSI+BVvkin6AL7PhksvdQ7FAgHfXsit+6p8GyOvKCqaeBG7HZhR1AbpyVka7JSNRO/6ssyrlj1g==",
    "SigningCertURL" : "https://sns.us-west-2.amazonaws.com/SimpleNotificationService-433026a4050d206028891664da859041.pem",
    "UnsubscribeURL" : "https://sns.us-west-2.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-west-2:934957504740:GuardDutyAnnouncements:9225ed2b-7228-4665-8a01-c8a5db6859f4"
}

解析的 Message 值（去掉转义引号）如下所示：

{
    "version": "1",
    "type": "NEW_FEATURES",
    "featureDetails": [{
        "featureDescription": "Customers with high-volumes of global CloudTrail events should see a net positive impact on their GuardDuty costs.",
        "featureLink": "https://docs.aws.amazon.com//guardduty/latest/ug/guardduty_data-sources.html#guardduty_cloudtrail"
    }]
}

有关 GuardDuty 更新结果的更新通知消息示例如下所示：

{
    "Type": "Notification",
    "MessageId": "9101dc6b-726f-4df0-8646-ec2f94e674bc",
    "TopicArn": "arn:aws:sns:us-west-2:934957504740:GuardDutyAnnouncements",
    "Message": "{\"version\":\"1\",\"type\":\"UPDATED_FINDINGS\",\"findingDetails\":[{\"link\":\"https://docs.aws.amazon.com//guardduty/latest/ug/guardduty_unauthorized.html\",\"findingType\":\"UnauthorizedAccess:EC2/TorClient\",\"description\":\"Increased severity value from 5 to 8.\"}]}",
    "Timestamp": "2018-03-09T00:25:43.483Z",
    "SignatureVersion": "1",
    "Signature": "XWox8GDGLRiCgDOXlo/fG9Lu/88P8S0FL6M6oQYOmUFzkucuhoblsdea3BjqdCHcWR7qdhMPQnLpN7y9iBrWVUqdAGJrukAI8athvAS+4AQD/V/QjrhsEnlj+GaiW+ozAu006X6GopOzFGnCtPMROjCMrMonjz7Hpv/8KRuMZR3pyQYm5d4wWB7xBPYhUMuLoZ1V8YFs55FMtgQV/YLhSYuEu0BP1GMtLQauxDkscOtPP/vjhGQLFx1Q9LTadcQiRHtNIBxWL87PSI+BVvkin6AL7PhksvdQ7FAgHfXsit+6p8GyOvKCqaeBG7HZhR1AbpyVka7JSNRO/6ssyrlj1g==",
    "SigningCertURL": "https://sns.us-west-2.amazonaws.com/SimpleNotificationService-433026a4050d206028891664da859041.pem",
    "UnsubscribeURL": "https://sns.us-west-2.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-west-2:934957504740:GuardDutyAnnouncements:9225ed2b-7228-4665-8a01-c8a5db6859f4"
}

解析的 Message 值（去掉转义引号）如下所示：

{
    "version": "1",
    "type": "UPDATED_FINDINGS",
    "findingDetails": [{
        "link": "https://docs.aws.amazon.com//guardduty/latest/ug/guardduty_unauthorized.html",
        "findingType": "UnauthorizedAccess:EC2/TorClient",
        "description": "Increased severity value from 5 to 8."
    }]
}