The default network access between different subnets in the same VPC is full. Therefore, in order to ensure network permission control between different businesses, it is recommended that different…

The default network access between different subnets in the same VPC is full. Therefore, in order to ensure network permission control between different businesses, it is recommended that different subnets be associated with different subnet security group policies based on the actual business needs of the business systems carried in the subnets, and network access permissions between businesses be strictly controlled. This is an effective VPC network security protection measure.