Microsoft Azure Firewall

Microsoft Azure Firewall is a cloud-native, managed network security service that protects resources within your Azure Virtual Network. It uses a built-in high availability architecture and allows administrators to centrally create and enforce network traffic rules.

The service offers integrated threat intelligence feeds from Microsoft's security sources to detect and block known malicious IP addresses. This feature helps provide immediate protection against both known and unknown cyber threats targeting your cloud infrastructure.

Yes, Azure Firewall is a stateful firewall, meaning it remembers active network connections and applies security rules based on the context of the traffic. This allows it to intelligently allow return traffic for outgoing connections while blocking unsolicited incoming traffic.

Azure Firewall billing is based on a combination of a fixed hourly rate for deployment and a variable fee based on the amount of data processed. This means you pay for the firewall's uptime alongside a per-GB charge for the network traffic it inspects.