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Event ID: 14147 Source: MicrosoftFirewall

Level
Description
ISA Server detected routes through adapter "<adapter>" that do not correlate with the network element to which this adapter belongs. The address ranges in conflict are: <IP address>-<IP address>;. Fix the network element and/or the routing table to make these ranges consistent; they should be in both or in neither. If you recently created a remote site network check if the event recurs. If it does not you may safely ignore this message.
Comments
 
See ME884496 and the link to "Microsoft event 14147 from source Microsoft Firewall" to resolve this problem.
See the link to "Network Behind A Network" for an article describing this concept.

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