Cisco VPN :: ACS 4.2 Authentication Server Not Responding / No Error?

Oct 25, 2011

I use PIX 8.0(4) and ACS 4.2 for VPN authentication. I got error as below even I'm able to ping to ACS server from PIX
 
RADIUS_SENT erver response timeout
RADIUS_DELETE
ERROR: Authentication Server not responding: No error
 
I tested aaa command from PIX and check configure on ACS (key and IP address) include restart ACS. The output still timeout and not responding from server.
 
PIX config:
=========
aaa-server AAA-VPN protocol radius
aaa-server AAA-VPN (MANAGEMENT) host 172.20.0.9
key xxxxxxx
 tunnel-group CGS-DR type remote-access
tunnel-group CGS-DR general-attributes
address-pool VPN-POOL
authentication-server-group AAA-VPN LOCAL
default-group-policy GR-CGS

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Error - Dns Server Not Responding?

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Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: AMD Phenom(tm) II X4 925 Processor, AMD64 Family 16 Model 4 Stepping 2
Processor Count: 4
RAM: 8183 Mb
Graphics Card: ATI Radeon HD 4350, 512 Mb
Hard Drives: C: Total - 942176 MB, Free - 888263 MB; D: Total - 11394 MB, Free - 1645 MB;
Motherboard: FOXCONN, ALOE
Antivirus: Norton 360, Updated and Enabled

Farbar Service Scanner Version: 06-08-2012
Ran by Jennifer (administrator) on 11-08-2012 at 09:25:16
Running from "C:UsersJenniferDownloads"
Microsoft Windows 7 Home Premium Service Pack 1 (X64)
Boot Mode: Normal

[code].....

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I installed NGS 2.0.2 for wireless guest user management and authentication. I implement webauth via webauth page on wlc deployed.One Branch with a WLC5508 version 7.0 wireless anchor controller is working on the NGS.But now I integrate next branch with WLC4402 version 6.0.188 and the authentication of users at the new branch gets an error, wrong user/password.
 
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Here is my ipconfig /all
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

[Code].....

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[code]....

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