- All inbound traffic is blocked by default
- All outbound traffic is Allowed by default
- Changes to Security Group take effect immediately
- You can have any number of EC2 instances within a security group
- You can have multiple security groups attached to EC2 instance
- Security Groups are STATEFULL
- If you create an inbound rule allowing traffic in, That traffic is automatically allowed back out again
- You cannot block specific IP addresses using security groups, instead use Network Access Control Lists
- You cannot add a deny rule
Security Group AWS
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RDS OLTP SQL Oracle MariaDB PostgreSQL MySQL Aurora DynamoDB – No SQL RedShift- OLAP Elasticache- In memory caching Memcached redis The following table shows the IOPS and storage range for each database engine. Range of Provisioned IOPS Range of …