Which feature is available with Azure Firewall but not supported by Network Security Groups?

The correct answer focuses on the unique capabilities of Azure Firewall, specifically its support for Network Address Translation (NAT). Azure Firewall is designed to provide advanced networking features, including the ability to perform NAT, which enables the translation of private IP addresses to a public IP address and vice versa. This allows for better management of network traffic and security policies, facilitating communication between different networks while concealing their internal structure.

Network Security Groups (NSGs), on the other hand, primarily function to control inbound and outbound traffic at the network interface level. They do not provide NAT capabilities, meaning that any NAT-related requirements must be addressed through other mechanisms, such as Azure Firewall. This highlights the distinction in functionality, as NSGs are limited to setting access control rules without the built-in NAT features found in Azure Firewall.

The other choices present aspects related to security and networking in Azure but do not pertain specifically to features exclusive to Azure Firewall. Multi-factor authentication, for instance, is a security feature that applies at the identity management level and is not part of the networking functionality offered by either products. Virtual Network Gateways facilitate connectivity between virtual networks and on-premises data centers but do not offer NAT features. Lastly, Private Link Service is used for private connectivity to