AWS Classroom notes 31/Oct/2023

AWS Networking Contd

What is VPN (Virtual Private Network)

• VPN enables private connectivity
• There are primarily two types of VPNs
  • Point to site
    
  • Site to Site
    

VPC Peering

• Peering in AWS allows any two vpcs without conflicting CIDR Ranges to communicate privately
• Overview
  
• Lets create a VPC (vpc-mumbai) in mumbai region with CIDR 192.168.0.0/16 with some subnets
  
• Lets create a vpc (vpc-oregon) in oregon region with CIDR 10.100.0.0/16 with some subnets
  
• Lets create a Peering request from vpc-mumbai to vpc-oregon. Now accept the peering request in vpc-oregon
  
  
  
  
  
• Once the request is accepted then the peering connnection objects (PCO) will be created.
  
  
  
  
• Now change the route tables in vpc-mumbai to forward all the traffic with destination 10.100.0.0/16 to Peering Connection object
  
• Now change the route tables in vpc-oregon to forward all the traffic with destination 192.168.0.0/16 to Peering Connection object
  
• Now create an ec2 instance in each of region and try ping using private ip
  
  
  
  
• Peering connections are between two vpcs and peering connections are not transitive.