AWS Virtual Private Network (VPC)

                                                                Virtual Private Network (VPC)

To access VPC there are a number of options:

 1)The Amazon VPC console,

 2)The AWS Command Line Interface

  3)Amazon EC2 Command line Interface Tools and

 4)Aws Tools for window Power Shell

   

There is no additional charge for using Amazon Virtual private Cloud

  VPC Wizard to create a VPC,Network with private IP addresses attach an internet gateway to it and subnet

Go to Aws Management Console and click VPC Under Networking->VPC

On the VPC Dashboard ,click Start VPC Wizard

Step 1: Select the first option :VPC with a Single Public Subnet, and click Select

When the work completes, a status window confirms ,VPC has been Successfully created

Return to Dashboard,

The console displays Developer default VPC and the VPC that Developer just created. Select myvpc,

The VPC that was just created

To display information about Internet gateways, click Internet Gateways in the navigation pane.

Developer will Have one Internet Gateway for Developer default VPC and another for the VPC that Developer Had Just created.

  The VPC that was just created has 2 route tables.

 The VPC came with a main route table by default and the VPC Wizard created a custom route table in addition.
   Developer Subnet is associate with the custom route table, which means that Developer use the routes in that table to determine ,how the traffic for the subnet flows.

If Developer add a new subnet to your VPC,It uses the main route table by default

A security group acts as a Virtual firewall  to control the traffic allowed into its associated instances

To create a Security Group

Step 1:Open the Amazon VPC console. Click Security groups in the navigation pane.

Step 2:Click on Create Security Group

                Create security Group window will prompted.

                Populated with the following fields, and then click Yes, create

.

To add rules to the webserversg security group:

Go to Security Groups->select the webserversg security group that Developer just created.

On the inbound Rules tab, click Edit and add rules for inbound traffic as follows:

Select HTTP from the Type list, and enter 0.0.0.0/0 in the source field

Click Add another rule, then select HTTPS from the Type list, and enter 0.0.0.0/0 in the source field

Click Add another rule, then select SSH from the Type list, and enter 0.0.0.0/0 in the source field

If Developer use 0.0.0.0/0  in Source field ,Developer will enable all IP addresses to access your instance using SSH

In Production ,Developer "ll authorize only a specific IP address or range of addresses to access instance

 Associating EC2 Instances with VPC  and Security Group Created

Go to Aws Management console ->EC2 Instances ->Click on Launch Instance

 Select Instance AMI(Amazon Machine Image ) from free tier a Micro Instance

Configure Instance details ,Select the Default config 

 Add Storage Page Keep default setting

On Instance Tag in Value provide name of instance  for ex myec2instance

Select the Radio button with label Select an existing Security Group

On Next page select Key-Pair created earlier from drop down Menu

Click on Instance from Navigation Pane to see status of newly created ec2 Instance

Associate Elastic IP Address to EC2 Instance ,Click on Network & Security ->Elastic IP

Click on Allocate New address ,Window Prompt will Appear for confirmation,Click on Yes,Allocate

Confirmation Screen will Appear with IP Address

Next Step to Assoiciate IP to Instance 

Associate Window prompt will Appear ,provide the Instance ,AMI details to Associate

Go to Instance from Left Navigation Pane ,and See Instance status should be 2/2 Checks 

Deleting the VPC

Before  Developer delete a VPC ,Developer must terminate any instances that are running in the VPC.

Deleting a VPC also deletes resources that are associated with the VPC such as subnets, security groups

,network , ACLs ,DHCP options sets, route tables, and Internet gateways.

Open the VPC console->Select Your VPCs

Select the VPC You wanted to delete

From Action Drop-down, click on delete VPC

When prompted for confirmation, click Yes, Delete

Click on Your VPC ,Now after Deleting only Default VPC Is Present