EAP-TLS error message on ACS server
Receving this message when client attempts authentication....Any idea or pointers on troubleshooting this?
"EAP-TLS authentication failed during handshake"
turn on debugging at the AccessPoint (:eap_diag1_on at 350-Series) or at the ACS (csradius -d -p -z) to get more information
http://www.cisco.com/en/US/products/sw/secursw/ps2086/products_tech_note09186a00800afec1.shtml
Verify Certificates and CA at the client and the ACS
http://www.cisco.com/en/US/products/hw/wireless/ps458/products_white_paper09186a008009256b.shtml
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Now there are hundreds stacked up on my desktop.
I cannot find the answer anywhere. You need to give answers to how to fix these errors because when I "search" "error code" or the number there is NOTHING. NOTHING! Yet you give us these stupid error codes
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[Cisco ACS 5.2] Windows XP - EAP-TLS error
Hi,
We used RADIATOR with Cisco WLC and Cisco AP in our WiFi architecture.
We just replaced RADIATOR with Cisco ACS 5.2 .
Few computers with Windows XP SP3 have this error : 11514 Unexpectedly received empty TLS message; treating as a rejection by the client
Description:
While trying to negotiate a TLS handshake with the client, ACS expected to receive a non-empty TLS message or TLS alert message, but instead received an empty TLS message. This could be due to an inconformity in the implementation of the protocol between ACS and the supplicant. For example, it is a known issue that the XP supplicant sends an empty TLS message instead of a non-empty TLS alert message. It might also involve the supplicant not trusting the ACS server certificate for some reason. ACS treated the unexpected message as a sign that the client rejected the tunnel establishment.
Resolution Steps :
Ensure that the client's supplicant does not have any known compatibility issues and that it is properly configured. Also ensure that the ACS server certificate is trusted by the client, by configuring the supplicant with the CA certificate that signed the ACS server certificate. It is strongly recommended to not disable the server certificate validation on the client!
Most of the computers (hundreds of Windows XP and Windows 7) got no problem.
ACS says "it is a known issue that the XP supplicant sends an empty TLS message instead of a non-empty TLS alert message".
If it was a known issue, we would have this error for other computer but we don't have (fortunately )
Wireless profile is sent to computers using GPO so they trust ACS server certificate...
Do you know how to correct this issue on XP supplicant? I dont find this issue on Google
Thanks for your help,
PatrickPatrick,
One way to troubleshoot is to physically have one of the laptops and see if unchecking the box that validates the server certificate fixes the issue. I have seen the same issue as you are seeing before and I would like for you to verfiy that.
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Meaning of EAP-TLS errors in ACS
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I'm trying to get a device authenticated to my wireless network using certificates. I get the generic error in ACS (4.2.0.124):
EAP-TLS or PEAP authentication failed during SSL handshake
Looking in the Auth log I get:
AUTH 12/09/2013 15:56:40 E 2255 3096 0x8b7ea5 EAP: EAP-TLS: ProcessResponse: SSL send alert fatal:handshake failure
AUTH 12/09/2013 15:56:40 E 2258 3096 0x8b7ea5 EAP: EAP-TLS: ProcessResponse: SSL ext error reason: c7 (Ext error code = 0)
AUTH 12/09/2013 15:56:40 E 2297 3096 0x8b7ea5 EAP: EAP-TLS: ProcessResponse(1519): mapped SSL error code (3) to -2120
AUTH 12/09/2013 15:56:42 E 3159 297052 0x0 AuthenReaper thread : Session Timed out since challenge not provided, freeing it
Can anyone help me with the reason codes or point me in the right direction?
Thanks,
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This is mostly due to improper certificate installed on either the server or on the client machine.
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Authentication failed using EAP-TLS and CSSC against ACS
Hi.
Playing with a trial version of CSSC (Cisco secure services client) I had a problem that really I don´t understand.
Any 802.1x configuration work fine but when I use anything involving the use of certificates (EAP-TLS or PEAP using a certificate instead a password to autenticate) I always see the same log message in ACS:
"Authen session timed out: Challenge not provided by client" It seems that my client supplicant does not repond to the ACS when the first one proposed an EAP method.
First I discart a certificate error because the same certificate works fine with Intel Proset Wireless supplicant and Windows Zero Configuration. EAP Fast works fine using auto provisioning or manual provisioning.
Any idea? I red the CSSC administration guide but I did not find anything that explains this behaviour or defines the right configuration for this EAP method.
I´m using Windows XP SP3, Intel Wireless 4965AGN and CSSC 5.1.1.18; My CA is a Windows CA.ACS version 4.2
Thanks in advanced.
Best regards.Today is not mmy day.
It´s still failing and maybe I will open a TAC case.
I´m looking at the log file of the CSSC and I don´t like what I have seen.
2125: portable-9b7161: oct 28 2010 20:34:29.156 -0100: %CSSC-6-INFO_MSG: %[tid=344][mac=1,6,00:1d:e0:9f:05:ef]: {764C6E35-2FFF-47CF-A0CA-5B90E9483367}: EAP suggested by server: leap
2126: portable-9b7161: oct 28 2010 20:34:29.156 -0100: %CSSC-6-INFO_MSG: %[tid=2044][mac=1,6,00:1d:e0:9f:05:ef]: {764C6E35-2FFF-47CF-A0CA-5B90E9483367}: EAP requested by client: eapTls
2127: portable-9b7161: oct 28 2010 20:34:29.156 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: {764C6E35-2FFF-47CF-A0CA-5B90E9483367}: EAP methods sent : sync=8
2128: portable-9b7161: oct 28 2010 20:34:29.156 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: {764C6E35-2FFF-47CF-A0CA-5B90E9483367}: Credential Request completed, response sent : sync=8
2129: portable-9b7161: oct 28 2010 20:34:29.156 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: Authentication state transition: AUTH_STATE_UNPROTECTED_IDENTITY_SENT_FOR_FULL_AUTHENTICATION -> AUTH_STATE_UNPROTECTED_IDENTITY_ACCEPTED
2130: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=344]: Credential callback, type=AC_CRED_SERVER_VERIFY, sync=9
2131: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=344]: Calling acCredDeferred
2132: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=344]: {764C6E35-2FFF-47CF-A0CA-5B90E9483367}: Credential Request deferred : sync=9
2133: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: {764C6E35-2FFF-47CF-A0CA-5B90E9483367}: Server verification sent : sync=9
2134: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: {764C6E35-2FFF-47CF-A0CA-5B90E9483367}: Credential Request completed, response sent : sync=9
2135: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=344]: Credential callback, type=AC_CRED_USER_CERT, sync=10
2136: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=344]: Calling acCredDeferred
2137: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=344]: {764C6E35-2FFF-47CF-A0CA-5B90E9483367}: Credential Request deferred : sync=10
2138: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=140]: Impersonating user
2139: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=140]: Loading client certificate private key...
2140: portable-9b7161: oct 28 2010 20:34:29.171 -0100: %CSSC-7-DEBUG_MSG: %[tid=140]: Calling acCertLoadPrivateKey()...
2141: portable-9b7161: oct 28 2010 20:34:29.187 -0100: %CSSC-7-DEBUG_MSG: %[tid=140]: ...acCertLoadPrivateKey() returned
2142: portable-9b7161: oct 28 2010 20:34:29.187 -0100: %CSSC-3-ERROR_MSG: %[tid=140]: Internal error 204, contact software manufacturer
2143: portable-9b7161: oct 28 2010 20:34:29.187 -0100: %CSSC-7-DEBUG_MSG: %[tid=140]: acCertLoadPrivateKey() error -20 [c:\acebuild\bldrobot_cssc_5.1.1.21_view\monadnock\src\ace\certificate\certificateimpl.cpp:239]
2144: portable-9b7161: oct 28 2010 20:34:29.187 -0100: %CSSC-3-ERROR_MSG: %[tid=140]: Internal error 4, contact software manufacturer
2145: portable-9b7161: oct 28 2010 20:34:29.187 -0100: %CSSC-7-DEBUG_MSG: %[tid=140]: CssException for function 'acCertLoadPrivateKey' => -20{error} [certificateimpl.cpp:240]
2146: portable-9b7161: oct 28 2010 20:34:29.187 -0100: %CSSC-3-ERROR_MSG: %[tid=140]: Internal error 7, contact software manufacturer
2147: portable-9b7161: oct 28 2010 20:34:29.187 -0100: %CSSC-7-DEBUG_MSG: %[tid=140]: Assertion 'CSS exception - should this be logged instead?' failed at [cssexception.cpp:114]
2148: portable-9b7161: oct 28 2010 20:34:29.218 -0100: %CSSC-7-DEBUG_MSG: %[tid=140]: Client certificate private key has not been loaded
2149: portable-9b7161: oct 28 2010 20:34:29.218 -0100: %CSSC-7-DEBUG_MSG: %[tid=140]: Deimpersonating user
2150: portable-9b7161: oct 28 2010 20:34:29.218 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: Client certificate 239f43fdcde8e190540fab2416253c5660c0d959 has been processed: ERR_INTERNAL_ERROR(7)
2151: portable-9b7161: oct 28 2010 20:34:29.218 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: Certificate 239f43fdcde8e190540fab2416253c5660c0d959 is unusable
2152: portable-9b7161: oct 28 2010 20:34:29.218 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: {764C6E35-2FFF-47CF-A0CA-5B90E9483367}: Credential Request completed, no response sent : sync=10
2153: portable-9b7161: oct 28 2010 20:34:30.078 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: Checking for new configuration
2154: portable-9b7161: oct 28 2010 20:34:32.078 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: Checking for new configuration
2155: portable-9b7161: oct 28 2010 20:34:34.078 -0100: %CSSC-7-DEBUG_MSG: %[tid=2044]: Checking for new configuration
It seems that It found a valid certificate, starts the Authentication proccess and when it must request the ACS challenge it fails when loading the private key and crash the supplicant
Do you think the same??
Thanks.
Best Regards.
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