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My wireless is using Cisco NAC and the connection to the NLB virtual IP is being filtered out causing Outlook users are not able to access to the Exchange server. <br />
<br />
All connection from LAN is working as there is no firewall in between.<br />
The NLB was setup using unicast. What could have cause this.<br />
<br />
May I know how does NLB actually works. Inbound connection is via Virtual IP and the outbound connection is via physical IP? Is it why the NAC is blocking the traffic?<br />
<br />
Thanks.
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My wireless is using Cisco NAC and the connection to the NLB virtual IP is being filtered out causing Outlook users are not able to access to the Exchange server. 

All connection from LAN is working as there is no firewall in between.
The NLB was setup using unicast. What could have cause this.

May I know how does NLB actually works. Inbound connection is via Virtual IP and the outbound connection is via physical IP? Is it why the NAC is blocking the traffic?

Thanks.

Exchange 2010 CAS Unicast NLB being blocked by Cisco NAC

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.