Skip to main content Link Menu Expand (external link) Document Search Copy Copied
AllAbout-IT

VPC is..

Amazon Virtual Private Cloud (Amazon VPC) enables you to launch Amazon Web Services (AWS) resources into a virtual network that you’ve defined. This virtual network closely resembles a traditional network that you’d operate in your own data center, with the benefits of using the scalable infrastructure of AWS.

With Amazon VPC, you can:

  1. Control your network’s IP address range
  2. Choose your own subnets and configure security settings
  3. Launch Amazon EC2 instances and other AWS resources into your VPC
  4. Connect your VPC to the Internet or to your own data center
  5. Implement Network Access Control Lists (ACLs) and security groups to control network traffic

Amazon VPC makes it easier to secure your infrastructure and gives you complete control over your network, including your selection of IP address range, creation of subnets, and configuration of route tables and network gateways.

Functions

The main function of Amazon Virtual Private Cloud (VPC) in AWS is to provide an isolated virtual network for your AWS resources, separate from the public Internet. This allows you to have more control over the security and configuration of your resources, as well as to connect them to your own data center or other networks if needed. Some of the key functions of Amazon VPC include:

  1. Isolation: Amazon VPC provides a logically isolated network environment for your AWS resources, so you can launch instances and other resources in a virtual network that you define.

  2. Custom IP Addressing: Amazon VPC allows you to define a custom IP address range for your virtual network and create subnets within that range.

  3. Security: Amazon VPC provides security features such as network ACLs and security groups that allow you to control inbound and outbound network traffic to and from your instances.

  4. Connectivity: Amazon VPC supports both Internet-facing and private instances, and provides various connectivity options, such as VPC peering, VPN connectivity, and Direct Connect.

  5. Scalability: Amazon VPC allows you to scale your network resources as needed, and supports launching multiple Amazon EC2 instances, Amazon RDS databases, and other AWS services in your virtual network.

Overall, Amazon VPC provides a flexible and scalable virtual network environment for your AWS resources, giving you more control and security for your workloads in the cloud.

Concept and Benefits of Subnets

Amazon Virtual Private Cloud (VPC) provides a custom virtual network. Within a VPC, multiple subnets can be created to further segment and manage the infrastructure.

A subnet is a virtual network within a VPC with a specific range of IP addresses assigned by the user. Instances within a subnet can communicate only with other instances in the same subnet, unless security group or network ACL rules are applied to allow communication between different subnets.

  • Strengthened security: Instances communicating within a subnet know only each other’s IP addresses, and communication with instances in different subnets requires allowing them through security group or network ACL rules.

  • Infrastructure distribution within availability zones: Subnets are created within specific availability zones, allowing instances to be distributed across availability zones to minimize impact in case of a failure.

  • Routing control: Instances within a subnet can communicate with each other, but to communicate between different subnets, routing tables must be configured.

  • Resource segmentation and management: Subnets enable grouping of resources and easy control over a specific subnet. This improves the security and availability of resources.

Security Group

##