This issue occurs if the ISA Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition network objects do not match the routing table entries that ISA Server uses to understand the network topology. Event ID 14147 may be logged when you first create a remote site network when you configure a site-to-site VPN connection in ISA Server. ISA Server requires that only one network adapter is associated with a single ISA Server network, and that network adapter IP addresses are not configured in more than one network. IP address ranges must be configured correctly for ISA Server network objects, and match the routing table. Network object definitions should include all remote subnets that can be reached through the adapter that is associated with the network. Additionally, persistent static routes should be defined in the routing table for each remote subnet. On the computer that is running Microsoft Internet Security and Acceleration (ISA) Server, Microsoft Forefront T...
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