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Event ID: 21265 Source: MicrosoftFirewall

Level
Description
The routing table for network adapter <adapter> includes IP address ranges that are not defined in the array network <array> to which it is bound. As a result when packets go in/out via this network adapter and they are from/sent to the IP address ranges listed below they will be considered spoofed and will be dropped. To resolve this issue add the missing IP address ranges to the array network.  The following IP address ranges will be dropped as spoofed: <range>.
Comments
 
Fix the route table and check the IP ranges in ISA.

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