Network misconfigurations

Unused Network ACL

Platform(s)
Compliance Frameworks

AWS Foundational Security Best Practices Controls, cis_8, HITRUST, iso_27001_2022, iso_27002_2022, mpa

Description

A network access control list (ACL) operates as a firewall for regulating traffic in and out of one or more subnets in a virtual private cloud. A virtual private cloud (VPC) is a private virtual network in your AWS account, which is logically isolated from other virtual networks in AWS cloud. A VPC subnet is a subdivision of the VPC network, which has a range of IP addresses. Network ACL is an optional layer of protection for your VPC subnets. It was found that the network ACL {AwsEc2NetworkAcl} is not associated with a subnet, and therefore unused.
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