In cloud environments, security and network access control are critical concerns, especially for services exposed via LoadBalancer. Without proper access restrictions, services such as API servers could be exposed to unnecessary risks, such as:

Unrestricted Public Access:

• By default, a LoadBalancer service may allow access from any IP address (0.0.0.0/0), which increases the attack surface.

This feature enables:

• Reduced exposure to unauthorized traffic, enhancing the overall security of the cluster.