Subnet
Last updated
Last updated
Subnet is a sub of VPC network, which you can group resources based on security or operational needs. A range of IP addresses.
2 types of subnet (with its route table)
private subnet:
public subnet:
The rule for traffic inside the VPC
An important property of subnet. It contains set of rules, called routes. Routes are used to determine where network traffic, from your subnet or gateway, is directed.
By default, it will contain rules of
local traffic.
0.0.0.0/0 if a gateway is attached.
Each subnet must reside entirely within one AZ and cannot span zones.
Every subnet that you create, automatically associated with the Main route table of the VPC.
Main route table: when you create a VPC, this table is automatically created. This control the routing of all the subnets that do not have a Custom route table associated with them.
Cannot be deleted.
Can be customized.
