Which of the following are the recommended resources to be deployed in theAmazon VPC private subnet?
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A. B. C. D.Answer - C.
As Database servers contain confidential information, so for a security perspective, it should be deployed in a Private Subnet.
Amazon Virtual Private Cloud (Amazon VPC) enables the user to launch AWS resources into a virtual network that a user has defined.
Option A is incorrect because NAT devices (NAT Gateway, Nat Instance) allow instances in private subnets to connect to the internet, other VPCs, or on-premises networks.
It is deployed in a public subnet.
Option B is incorrect because bastion host is a server whose purpose is to provide access (SSH access) to a private network from an external network, such as the Internet.
It is deployed in a public subnet.
Option D is incorrect because an Internet Gateway is a horizontally scaled, redundant, and highly available VPC component that allows communication between your VPC and the internet.
For more information on AWS VPC, please refer to the below URL:
https://docs.aws.amazon.com/vpc/latest/userguide/VPC_Networking.html https://docs.aws.amazon.com/vpc/latest/userguide/VPC_Internet_Gateway.html https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat.html https://aws.amazon.com/blogs/security/how-to-record-ssh-sessions-established-through-a-bastion-host/The Amazon Virtual Private Cloud (VPC) is a logically isolated network that enables the user to launch AWS resources into a virtual network that they have defined. Within the VPC, a subnet is a range of IP addresses within the VPC that the user can use to launch Amazon Elastic Compute Cloud (EC2) instances, Relational Database Service (RDS) instances, or other resources.
In this context, private subnets are subnets that do not have a direct connection to the internet. The instances in these subnets cannot communicate with the internet unless they are routed through a NAT Gateway, a Bastion Host, or other resources.
Therefore, the recommended resources to be deployed in the Amazon VPC private subnet are:
A. NAT Gateways: Network Address Translation (NAT) Gateway allows instances in a private subnet to connect to the internet or other AWS services, without exposing their private IP addresses to the internet. It acts as a bridge between the private subnet and the internet, enabling instances to access the internet for software updates, patching, and other maintenance tasks.
B. Bastion Hosts: A bastion host is a special-purpose instance that is used to securely administer EC2 instances within a private subnet. It acts as a proxy server, enabling secure access to EC2 instances in a private subnet from a remote network, such as the user's home network. Bastion hosts should be deployed in a public subnet and configured with appropriate security measures.
C. Database Servers: Database servers should be deployed in a private subnet to ensure that they are not directly accessible from the internet. The database servers can be accessed from other resources within the VPC, such as web servers or application servers, through appropriate routing configurations.
D. Internet Gateways: Internet Gateways are used to enable communication between instances in a VPC and the internet. However, Internet Gateways are not recommended to be deployed in private subnets, as it would expose the instances to the public internet.
In conclusion, the recommended resources to be deployed in the Amazon VPC private subnet are NAT Gateways, Bastion Hosts, and Database Servers. Internet Gateways should not be deployed in private subnets.