A security group controls the traffic that is allowed to reach and leave the instance. It is a set of IP filter rules that define how to handle incoming (ingress) and outgoing (egress) traffic to both the public and private interfaces of an instance.
- AWS root/IAM access
- List of rules that need to be associated with the instance
Step 1: Log into the AWS account, and select the EC2 service from the search bar
Step 2: Navigate to the Network & Security >> Security group and click on “create security group” to create a new one
Step 3: Add the required inbound and outbound rules by clicking on “add rule”.
Step 4: Click on Create Security Group
Step 5: Navigate to the instance and select the instance that needs to replace the security group
Step 6: Click on Actions and navigate to Security >> Change Security Group
Step 7: Search for the required security group name in the Associated security groups and click on “Add security group”. Remove the existing security group by clicking on the “remove” option
Step 8: Finally save the changes