NAT Gateway
- NAT is used to provide internet access to private subnets
- AWS provides NAT by
- NAT instance
- NAT Gateway
- NAT Gateway requires an elastic ip and it needs to be present in public subnet
- Create a vpc with one public and private subnet
- ensure you have ec2 instances in public and private subnet
- NOw create a NAT gateway in public subnet
- Wait till the state is Available for NAT Gateway
- Now modify private route table to forward packets to NAT Gateway to access internet
VPC Peering
- AWS VPC Peering allows private communicatiob between two vpc’s belonging to any regions or any accounts
- The destination vpc should approve the peering request then in two vpc’s peering connection objects will be created.
- Create a peering connection from one vpc
- Now since there is infra to communicate, now modify route tables to forward packets to each other
- Now ping from one ec2 to other using private ip
- AWS VPC Peering workflow
