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AWS uses a number of different firewalls depending on the type of traffic being sent and received by the AWS services. These firewalls can help protect against attacks that may try to exploit vulnerabilities in the AWS services or access sensitive data.

In general, AWS uses the following firewalls:

The AWS Security Group determines which traffic is allowed to pass through the firewall. The security group can be created using the Amazon EC2 console, the AWS CLI, or the AWS API.

Traffic that is not allowed by the security group is rejected.

The AWS Security GroUPS interface provides fine-grained control over the traffic that is allowed to pass through the firewall. You can allow traffic from a specific source IP address or port, or from a specific path on the network.

You can also create rules that allow or deny all traffic, or traffic from specific sources and ports.

The AWS Security GroUPS interface also provides the ability to add new rules automatically when you create or update a security group. This feature is useful if you want to add rules that apply to all traffic that is passing through the security group.

The AWS Security Group interface also provides the ability to view the status of the security group and the rules that are in the security group.