Title

The Windows Firewall must allow outbound connections, unless a rule explicitly blocks the connection for the Domain Profile. (Cat II impact)

Discussion

A firewall provides a line of defense against attack. To be effective, it must be enabled and properly configured. Outbound connections are allowed in the domain, unless a rule explicitly blocks the connection. This allows normal outbound communication which could be restricted as necessary with additional rules.

Check Content

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) -> Domain Profile Tab -> State, "Outbound Connections" to "Allow (default)". Configure a comparable setting if a third-party firewall is used.

Additional Identifiers

Rule ID: SV-25221r2_rule

Vulnerability ID: V-17419

Group Title: Windows Firewall Domain - Outbound

Expert Comments

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