"A Network Access Control List (ACL) is a security enhancement available for your Azure deployment. An ACL provides the ability to selectively permit or deny traffic for a virtual machine endpoint
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How ACLs work?
An ACL is an object that contains a list of rules. When you create an ACL and apply it to a virtual machine endpoint, packet filtering takes place on the host node of your VM. This means the traffic from remote IP addresses is filtered by the host node for matching ACL rules instead of on your VM. This prevents your VM from spending the precious CPU cycles on packet filtering."
An ACL is an object that contains a list of rules. When you create an ACL and apply it to a virtual machine endpoint, packet filtering takes place on the host node of your VM. This means the traffic from remote IP addresses is filtered by the host node for matching ACL rules instead of on your VM. This prevents your VM from spending the precious CPU cycles on packet filtering."
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