If no security policy is configured between the firewall domains, or all security policies are not hit when the security policy is checked, the default packet filtering action between domains is performed by default ().

If no security policy is configured between the firewall domains, or all security policies are not hit when the security policy is checked, the default packet filtering action between domains is performed by default ().
A . Only allowed to pass a part
B . Refusal to pass
C . Reporting administrator
D . Different applications have different default actions

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Answer: B