The Windows Firewall must block unsolicited inbound connections for the Private Profile.

From Windows Vista Security Technical Implementation Guide

Part of Windows Firewall Private – Inbound

Associated with IA controls: ECSC-1

SV-18484r2_rule The Windows Firewall must block unsolicited inbound connections for the Private Profile.

Vulnerability discussion

A firewall provides a line of defense against attack. To be effective, it must be enabled and properly configured. Unsolicited inbound connections may be malicious attempts to gain access to a system. Unsolicited inbound connections for which there is no rule allowing the connection will be blocked on a private network.

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Fix text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Windows Firewall with Advanced Security -> Windows Firewall with Advanced Security -> Windows Firewall Properties (this link will be in the right pane) -> Private Profile Tab -> State, "Inbound connections" to "Block (default)". Configure a comparable setting if a third-party firewall is used.

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