The Firewall service detected a possible configuration error in a demand dial interface

Microsoft.ISAServer.2006.The_Firewall_service_detected_a_possible_configuration_error_in_a_demand_dial_interface.Rule (Rule)

This Rule generates alerts when The Firewall service detected a possible configuration error in a demand dial interface

Knowledge Base article:

Summary

The Firewall service detected that a dial-up connection may be configured improperly.

Causes

This event occurs when a dial-up connection was assigned an IP address that is already included in another network. This could indicate a configuration error or a possible spoof attack.

Resolutions

Check the IP address ranges of the dial-up network, and verify the configuration with the service provider (ISP).

Element properties:

Target	Microsoft.ISAServer.2006.ServerRole
Category	EventCollection
Enabled	True
Alert Generate	False
Remotable	True

Member Modules:

ID	Module Type	TypeId	RunAs
DS	DataSource	Microsoft.ISAServer.2006.Rule.AlertGenerate.DS	Default
WA	WriteAction	Microsoft.ISAServer.2006.Rule.AlertGenerate.WA	Default

Source Code:

<Rule ID="Microsoft.ISAServer.2006.The_Firewall_service_detected_a_possible_configuration_error_in_a_demand_dial_interface.Rule" Enabled="onEssentialMonitoring" Target="Microsoft.ISAServer.2006.ServerRole" ConfirmDelivery="true" Remotable="true" Priority="Normal" DiscardLevel="100">

  <Category>EventCollection</Category>

  <DataSources>

    <DataSource ID="DS" TypeID="Microsoft.ISAServer.2006.Rule.AlertGenerate.DS">

      <ComputerName>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>

      <LogName>Application</LogName>

      <EventsPattern>^(21163)$</EventsPattern>

      <EventType>2</EventType>

      <SourcePattern>Microsoft Firewall</SourcePattern>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="WA" TypeID="Microsoft.ISAServer.2006.Rule.AlertGenerate.WA">

      <AlertMessageId>$MPElement[Name="Microsoft.ISAServer.2006.The_Firewall_service_detected_a_possible_configuration_error_in_a_demand_dial_interface.AlertMessage"]$</AlertMessageId>

      <DomainName>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/DomainDnsName$</DomainName>

      <Priority>2</Priority>

      <Severity>2</Severity>

    </WriteAction>

  </WriteActions>

</Rule>