Final answer:
To grant an IAM user access to a specific S3 bucket, create and attach an IAM policy with the necessary permissions to the user. Specify the S3 actions and resources in the policy and follow the principle of least privilege.
Step-by-step explanation:
To give an IAM user access to a specific S3 bucket, you need to create an IAM policy that specifies the necessary permissions, and then attach that policy to the user or user group. Here's a step-by-step guide on how to do this:
- Log into the AWS Management Console and navigate to the IAM dashboard.
- Go to the 'Policies' section and click 'Create Policy'.
- Use the visual editor or JSON tab to define the policy. If using the visual editor, select the S3 service, then set the specific actions (like GetObject, PutObject) you want to allow. Specify the resource by entering the ARN of the S3 bucket.
- Review the policy, give it a descriptive name, and save it.
- Navigate to the 'Users' section in IAM, select the user to whom you want to give access, and then add the policy you created to this user.
To give an IAM user access to a specific S3 bucket, you can follow these steps:
Open the Amazon S3 console
Select the bucket for which you want to grant access
Choose the 'Permissions' tab
Click on 'Bucket Policy'
Paste the following policy statement:
Make sure that the policy grants only the minimum required permissions, following the principle of least privilege.