Security
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S3 Security is divided in four categories- Privacy, Log Trail, Access Permissions and Encryption.
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Access Control Lists plays an instrumental role in network security. In AWS world, Network ACLs (NACLs) are referred as “Security at the Gate”, since rules are applied at Subnet level
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A Security Group (SG) is a firewall that controls traffic at the NIC level of the Virtual Server (An EC2 instance running virtually over a physical hardware)
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IAM allow Admins to manage users and their level of access to AWS resources. IAM gives centralized access to manage permissions. IAM can act on Users and Groups, can create or use Policy documents and define Roles.
Vipul Pathak 