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ISA Server configuration error

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ISA Server configuration error - 4.Sep.2008 8:57:44 AM   
stevenjwilliams83101

 

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Joined: 19.Aug.2008
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ISA Server detected routes through the network adapter LAN that do not correlate with the network to which this network adapter belongs. When networks are configured correctly, the IP address ranges included in each array-level network must include all IP addresses that are routable through its network adapters according to their routing tables. Otherwise valid packets may be dropped as spoofed. The following ranges are included in the network's IP address ranges but are not routable through any of the network's adapters: 10.0.0.95-10.0.0.95. Note that this event may be generated once after you add a route, create a remote site network, or configure Network Load Balancing and may be safely ignored if it does not re-occur.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.




I was getting this error on my ISA Server 2004 and now I am getting it on my 2006 server.  I know it has something to do with my VPN clients because all the addresses that come up are the ones reserved for my VPN clients in DHCP.  How is this fixable?  Or does it even matter?  I see the word "may drop packets" and I get scared.  When I posted this before, a user told me it was something to do with the routing in ISA server, and he mentioned a "network behind a network" concept in ISA, not sure what that means though?  Can someone help?

Thanks.

Post #: 1
RE: ISA Server configuration error - 7.Sep.2008 7:34:46 AM   
justmee

 

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Joined: 14.May2007
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If this message is related to VPN clients, and traffic is not blocked, you can safely ignore it.
Interesting, I've seen it with the TMG beta 1 too. Let's call it consistency and perseverance.

Yes, it may have to do with the way ISA's Networks are defined(say the "network behind a network"  scenario).
But your log appears to be caused by the VPN clients.

(in reply to stevenjwilliams83101)
Post #: 2

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