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ACS 4.1 and ASA 5510 Firewall.

Posted on 2009-05-20
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Last Modified: 2012-05-07
Does anyone know if ACS4.1 can work with ASA5510 with TACACS+ authentication or I have to use RADIUS? Please also provide  me some steps or link on how to go about it if possible.
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Question by:oliverwari
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MikeKane earned 2000 total points
ID: 24432453
Well, I don't have specific knowledge on that version...  but the ASA will certainly work with TACACS+ for authentication.    

Here are links showing the configuration examples on the ASA with TACACS+, hopefully it will get you going...

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a008046f307.shtml
http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00807349e7.shtml
http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a00800949d6.shtml#csnt-tacacs

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by:oliverwari
ID: 24433496
What I am trying to do is configure such that the ASA administrator should be logging into the device via the ACS 4.1 server.   The ASA device is reporting an AAA decode failure....server secret mismatch.
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by:MikeKane
MikeKane earned 2000 total points
ID: 24433560
TACACS (as well as radius) use a key to provide the encryption between the server and clients.     If the keys don't match, you might see an error like this.  


Here's another excellent paper that's worth a read:
http://www.sans.org/reading_room/whitepapers/networkdevs/understanding_and_implementing_tacacs_117
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