AWS Basics for networking
- To understand networking in AWS we need to understand
- Global infra of AWS
Global infra of AWS
- Region: This is geographical location
- Availability Zone: Az’s will have datacenters
- Global network:
- Local Zones
Networking in AWS
- AWS has a service called VPC (virtual private cloud) which enables networking.
- Using VPC we create private networks.
- Private networks can be configure to
- connect to internet.
- connect from internet.
- By default AWS networks created will be private without any internet connection.
- In AWS network is scoped at region level and subnet belongs to Availability Zone or Local Zone.
- To get internet connection we need Gateways
- connected from internet => Internet Gateway
- connect to internet
- => private subnets + public subnet + internet gateway
- => Egress only internet gateway
- AWS vpc has route tables (routers). BY default all routing within vpc (network) is enabled.
- AWS by default will have a default vpc in every region with internet (to and from) enabled
Design approach
- Overview.
Lets create our first vpc with 4 subnets
- Watch classroom recording
-
In a AWS VPC by default you will have
- default route table
- default security group
- default Network ACL
- Exercise: Create vpc with 6 subnets
- Exercise:
- What component in network assigns ip address
- What is DNS
