Topic 1 Question 159
A company has a website that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances are in an Auto Scaling group. The ALB is associated with an AWS WAF web ACL.
The website often encounters attacks in the application layer. The attacks produce sudden and significant increases in traffic on the application server. The access logs show that each attack originates from different IP addresses. A solutions architect needs to implement a solution to mitigate these attacks.
Which solution will meet these requirements with the LEAST operational overhead?
Create an Amazon CloudWatch alarm that monitors server access. Set a threshold based on access by IP address. Configure an alarm action that adds the IP address to the web ACL’s deny list.
Deploy AWS Shield Advanced in addition to AWS WAF. Add the ALB as a protected resource.
Create an Amazon CloudWatch alarm that monitors user IP addresses. Set a threshold based on access by IP address. Configure the alarm to invoke an AWS Lambda function to add a deny rule in the application server’s subnet route table for any IP addresses that activate the alarm.
Inspect access logs to find a pattern of IP addresses that launched the attacks. Use an Amazon Route 53 geolocation routing policy to deny traffic from the countries that host those IP addresses.
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コメント(10)
- 正解だと思う選択肢: B
AWS Shield Advanced is focused on protecting against DDoS attacks, while AWS WAF is focused on protecting against web exploits. However, both services can be used together to provide comprehensive protection for your applications.
👍 5God_Is_Love2023/03/12 - 正解だと思う選択肢: B
AWS Shield is a managed distributed denial of service (DDoS) protection service that safeguards applications running on AWS. It provides dynamic detection and automatic inline mitigations that minimize application downtime and latency, so there is no need to engage AWS Support to benefit from DDoS protection. There are two tiers of AWS Shield: Standard and Advanced.
👍 4schalke042023/02/02 - 正解だと思う選択肢: B
Reading more about option B, I pick B
👍 4Musk2023/02/08
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