May 07, 2022

Top 20 AWS GuardDuty Questions and Answers

            Amazon GuardDuty is a threat detection service that monitors your AWS accounts and workloads for malicious behaviour in real time and provides detailed security findings for visibility and mitigation. Threat detection is provided by Amazon GuardDuty, which allows you to monitor and defend your AWS accounts, workloads, and data stored in Amazon Simple Storage Service on a continuous basis (Amazon S3). AWS CloudTrail Events, Amazon Virtual Private Cloud (VPC) Flow Logs, and domain name system (DNS) Logs are used by GuardDuty to analyse continuous metadata streams created from your account and network activity. GuardDuty also employs integrated threat intelligence to better identify threats, such as known malicious IP addresses, anomaly detection, and machine learning (ML).

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Ques. 1): Is the predicted cost on the Amazon GuardDuty payer account for all linked accounts, or just for that specific payer account?


Only the cost of the individual payer account is included in the projected cost. The anticipated cost for the administrator account is the only thing you'll see.

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Ques. 2): What do Amazon GuardDuty and Amazon Macie have in common?


Amazon GuardDuty helps identify risks like attacker reconnaissance, instance compromise, account compromise, and bucket compromise, and protects your AWS accounts, workloads, and data. Amazon Macie classifies what data you have, its security, and the access controls associated with it, allowing you to find and safeguard sensitive data in Amazon S3.

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Ques. 3): How can I get Amazon GuardDuty to work?


With a few clicks in the AWS Management dashboard, Amazon GuardDuty may be set up and deployed. GuardDuty begins monitoring continuous streams of account and network activity in near real-time and at scale as soon as it is enabled. There is no need to install or administer any extra security software, sensors, or network equipment. Threat intelligence is pre-integrated into the service and is updated and maintained on a regular basis.

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Ques. 4): How soon does GuardDuty begin to work?


When Amazon GuardDuty is on, it immediately begins scanning for malicious or illegal behaviour. The time it takes for you to start obtaining findings is determined by the level of activity in your account. GuardDuty only looks at activity that begins once it is enabled, not historical data. You'll get a finding in the GuardDuty console if GuardDuty detects any potential risks.

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Ques. 5): Can I use Amazon GuardDuty to manage several accounts?


Yes, Amazon GuardDuty supports multiple accounts, allowing you to manage numerous AWS accounts from a single administrator account. All security findings are consolidated and sent to the administrator or Amazon GuardDuty administrator account for assessment and remediation when this feature is utilised. When utilising this configuration, Amazon CloudWatch Events are additionally aggregated to the Amazon GuardDuty administrator account.

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Ques. 6): Do I have to enable AWS CloudTrail, VPC Flow Logs, and DNS logs for Amazon GuardDuty to work?


No. Amazon GuardDuty pulls independent data streams directly from AWS CloudTrail, VPC Flow Logs, and AWS DNS logs. You don’t have to manage Amazon S3 bucket policies or modify the way you collect and store logs. GuardDuty permissions are managed as service-linked roles that you can disable GuardDuty to revoke at any time. This makes it easy to enable the service without complex configuration, and eliminates the risk that an AWS Identity and Access Management (IAM) permission modification or S3 bucket policy change will affect service operation. It also makes GuardDuty extremely efficient at consuming high-volumes of data in near real-time without affecting the performance or availability of your account or workloads.

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Ques. 7): Is Amazon GuardDuty a domestic or international service?


GuardDuty is a regional service provided by Amazon. The Amazon GuardDuty security findings remain in the same areas where the underlying data was generated, even when multiple accounts are enabled and several regions are used. This ensures that the data being evaluated is geographically specific and does not cross AWS regional boundaries. Customers can use Amazon CloudWatch Events to aggregate security discoveries produced by Amazon GuardDuty across regions, pushing results to a data repository under their control, such as Amazon S3, and then aggregating findings as needed.

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Ques. 8): Is Amazon GuardDuty capable of automating preventative actions?


You can build up automated preventative measures based on a security finding with Amazon GuardDuty, Amazon CloudWatch Events, and AWS Lambda. For example, based on security discoveries, you can develop a Lambda function to adjust your AWS security group rules. If a GuardDuty report indicates that one of your Amazon EC2 instances is being probed by a known malicious IP, you may use a CloudWatch Events rule to automatically adjust your security group rules and limit access on that port.

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Ques. 9): I'm a new Amazon GuardDuty user. Are my accounts protected by GuardDuty for S3 by default?


Yes. GuardDuty for S3 protection will be enabled by default for all new accounts that enable GuardDuty via the console or API. Unless "auto-enable for S3" is enabled, new GuardDuty accounts established using the AWS Organizations "auto-enable" functionality will not have GuardDuty for S3 protection set on by default.

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Ques. 10): What is Amazon GuardDuty for EKS Protection and how does it work?


Amazon GuardDuty for EKS Protection is a GuardDuty functionality that analyses Kubernetes audit logs to monitor Amazon Elastic Kubernetes Service (Amazon EKS) cluster control plane behaviour. GuardDuty is connected with Amazon EKS, allowing it direct access to Kubernetes audit logs without the need to enable or store them. These audit logs are chronological records that capture the sequence of actions performed on the Amazon EKS control plane and are security-relevant. GuardDuty can use these Kubernetes audit logs to conduct continuous monitoring of Amazon EKS API activity and apply proven threat intelligence and anomaly detection to discover malicious behaviour or configuration changes that could expose your Amazon EKS cluster to unauthorised access.

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Ques. 11): Is GuardDuty for EKS Protection available for a free trial?


There is a 30-day free trial available. Each new Amazon GuardDuty account in each region gets a free 30-day trial of GuardDuty, which includes GuardDuty for EKS Protection. Existing GuardDuty accounts are eligible for a free 30-day trial of GuardDuty for EKS Protection. The post-trial expenditures estimate can be seen on the GuardDuty console use page during the trial period. You will be able to see the expected fees for your member accounts if you are a GuardDuty administrator. The AWS Billing dashboard will show you the true expenses of this functionality after 30 days.

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Ques. 12): What are Amazon GuardDuty's main advantages?


Amazon GuardDuty makes it simple to keep track of your AWS accounts, workloads, and Amazon S3 data in real time. GuardDuty is fully independent of your resources, so your workloads will not be impacted in terms of performance or availability. Threat intelligence, anomaly detection, and machine learning are all integrated into the service. Amazon GuardDuty generates actionable warnings that are simple to connect with current event management and workflow systems. There are no upfront expenses, and you only pay for the events that are examined; there is no need to install additional software or pay for threat intelligence stream subscriptions.

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Ques. 13): Is there a free trial available?


Yes, any new Amazon GuardDuty account can try the service for free for 30 days. During the free trial, you get access to the full feature set and detections. The amount of data handled and the expected daily average service charges for your account will be displayed by GuardDuty. This allows you to try Amazon GuardDuty for free and estimate service costs beyond the free trial period.

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Ques. 14): Does Amazon GuardDuty assist with some of the PCI DSS (Payment Card Industry Data Security Standard) requirements?


GuardDuty examines events from a variety of AWS data sources, including AWS CloudTrail, Amazon VPC Flow Logs, and DNS logs. Threat intelligence feeds from AWS and other providers, such as CrowdStrike, are also used to detect unusual activities. Foregenix produced a white paper evaluating Amazon GuardDuty's effectiveness in meeting compliance standards, such as PCI DSS requirement 11.4, which mandates intrusion detection solutions at crucial network points.

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Ques. 15): What types of data does Amazon GuardDuty look at?


AWS CloudTrail, VPC Flow Logs, and AWS DNS logs are analysed by Amazon GuardDuty. The service is designed to consume massive amounts of data in order to process security alerts in near real time. GuardDuty gives you access to built-in cloud detection algorithms that are maintained and continuously upgraded by AWS Security.

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Ques. 16): Is Amazon GuardDuty in charge of my logs?


No, your logs are not managed or stored by Amazon GuardDuty. GuardDuty analyses and discards any data it consumes in near real time. GuardDuty is able to be highly efficient, cost-effective, and lower the danger of data remanence as a result of this. You should use AWS logging and monitoring services directly for log delivery and retention, as they provide full-featured delivery and retention options.

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Ques. 17): What is Amazon GuardDuty threat intelligence?


Amazon GuardDuty threat intelligence consists of known attacker IP addresses and domain names. GuardDuty threat intelligence is provided by AWS Security as well as third-party providers like Proofpoint and CrowdStrike. These threat intelligence streams are pre-integrated and updated on a regular basis in GuardDuty at no additional charge.

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Ques. 18): Is there any impact on my account's performance or availability if I enable Amazon GuardDuty?


No, Amazon GuardDuty is fully separate from your AWS resources, and there is no chance of your accounts or workloads being affected. GuardDuty can now work across several accounts in an organisation without disrupting existing processes.

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Ques. 19): What is Amazon GuardDuty capable of detecting?


Built-in detection techniques created and optimised for the cloud are available with Amazon GuardDuty. AWS Security is in charge of maintaining and improving the detection algorithms. The following are the key detection categories:

Peculiar API activity, intra-VPC port scanning, unusual patterns of failed login requests, or unblocked port probing from a known rogue IP are all examples of reconnaissance by an attacker.

Cryptocurrency mining, malware using domain generation algorithms (DGAs), outbound denial of service activity, unusually high network traffic, unusual network protocols, outbound instance communication with a known malicious IP, temporary Amazon EC2 credentials used by an external IP address, and data exfiltration using DNS are all signs of an instance compromise.

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Ques. 20): How do security discoveries get communicated?


When a threat is detected, Amazon GuardDuty notifies the GuardDuty console and Amazon CloudWatch Events with a thorough security finding. As a result, alerts are actionable and simple to integrate into existing event management or workflow systems. The category, resource affected, and metadata linked with the resource, such as a severity rating, are all included in the findings.

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