Multi Networks

• Communication between two networks is
  • possible if you are using public ip addressing.

• Solution 1: Public IP addressing is for the VM which is in Network-A has an IP Address which can be accessed over internet and same with VM in Network-B

  • In this scenario the machines are exposed over internet and you stop unnecessary traffic using NACL/Security Groups/Firewalls
  • We wanted two vms in two network communicate, we are reserving two public ip addresses which has cost involved.
  • VM A and VM B needs public ip addresses

• Solution 2: Virtual Private Networking (VPN) can be established between two networks

• Now lets look at combinataions

  1. Network A is VPC and Network B is On-Premise
  2. Network A is VPC and Network B is VPC
  3. Network A is on premise and Network B is on-premise

• Now we need to learn about 1 & 2

• Lets start with Both networks in AWS, here also we have combinations

  • VPC A from account A and Vpc B from Account B
  • Both VPC A and B from same account and different Regions
  • • Both VPC A and B from same account and same Regions

VPC Peering

• VPC Peering allows two vpcs in any regions belonging to same/different accounts communicate