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VPN connection starts but NAC doesn't initiate behind Cisco router

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dannieboiz

Technical User
Nov 20, 2006
13
We currently have a Cisco Mesh network which consist of a 2811 router, and a 500g switch/controller

When I connect directly to the modem I'm able to connect to the VPN and NAC starts up and grant access right away.

But when I go through the router I'm the Client is able to connect but the NAC session doesn't start and there's no way to force it.

Do you think the router is blocking the port that NAC is communicating on? Based on this article blow, NAC communicate on port 8905..

How can I allow open up the ports for this?
 
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