Amazon offers a range of firewall options that are designed to provide the best security for your AWS resources. You can use Amazon's network security features to help protect against common attacks, prevent DDoS attacks, and enable intelligent detection of bad traffic.
Some key points about Amazon’s AWS Firewall are:Secure internet access to your account
Route traffic between EC2 instances in different subnets without exposing them to the internet
Enable SSH or RDP connections by specifying which IP addresses can access your instances