Final answer:
The host firewall included with Windows 7 is Windows Firewall, designed to prevent unauthorized network access.
Step-by-step explanation:
The host firewall included with Windows 7 is Windows Firewall. Windows Firewall is an integral part of the Windows 7 operating system and provides users with the ability to filter incoming and outgoing network traffic. It's designed to help prevent unauthorized access to the computer through the internet or other network connections. While Windows Defender and Microsoft Safety Net are related to security, they are not the host firewall solution included in Windows 7. It's worth noting that Microsoft Protector is not a known product associated with Windows firewall or antivirus solutions.