Question

You have a set of EC2 Instances hosted on the AWS Cloud. The EC2 Instances are hosting a web application. Which of the following acts as a firewall to your VPC and the instances in it? Choose 2 answers from the options given below.

A. Usage of Security Groups

B. Usage of AWS Config

C. Usage of Network Access Control Lists

D. Usage of the Internet gateway

Answer 1

Answer - A and C.

The AWS Documentation mentions the following.

A security group acts as a virtual firewall for your instance to control inbound and outbound traffic.

A network access control list (ACL) is an optional layer of security for your VPC that acts as a firewall for controlling traffic in and out of one or more subnets.