Eap-tls wired 802.1x - certificate issue?

I have configured ACS 4.0 and an 2003 Enterprise root CA on the same server, successfully applied the GPO to auto-enroll machines with Computer certificates, and then enabled 802.1x security on Catalyst 3750s. Note this is for wired 802.1x.
If I reboot the machine, the EAP packets go through and you can see a successful authentication in the "Passed Authentications" log. However, if you disconnect the wire and then plug it back in, Windows gets stuck in "Validatiny Identity", and eventually a balloon pops up saying: "Windows was unable to find a certificate to log you on". Doing a 'sh dot1x interface ...' shows it is CONNECTING until the auth timeout is reached then it dumps the workstation into the guest vlan. Nothing is logged to Passed Authentications or Failed Attempts on the ACS server.
Basically, the only time the EAP-TLS machine authentication works is when you reboot the machine. And if you change the state of the port either by diabling/enabling from the workstation or switch, or unplug the cable and plug it back in, Windows does not seem to pass the certificate information along to the PAE.
This does not seem to happen when a user/client certificate is issued, only when it is a machine/computer certificate
Has anybody seen this before and have any solutions why Windows cannot recogonize the machine certificate properly?

We solved our WIRELESS problem by editing the following entrees. I sure this can be applied to the wired side somehow.
The information about the correct settings can be found in this Microsoft document:
http://technet2.microsoft.com/WindowsServer/en/library/8e74974f-c951-48ce-8235-02f4ed8e74921033.mspx?mfr=true
The areas of interest are the SupplicantMode (EAPOL-Start Message) and AuthMode (what type of authentication to use) registry entries. These can be configured manually in the registry or applied via Group Policy.
This allows just the machine to authenticate (using a Cert all ready on the Machine) then we use our ACS server to auth the user via AD.
I am doing this wirelessly and using as long as you are using a WDS the following will be the result.
Roaming AP to AP I only lost 1 packet.
Roaming from Vlan to other Vlan I lost 5 packets (Different ip address)
Shutting the wireless off and back on I only lost 8 packets.
I thought this was a very good result. We will be launching our lab with 35 plus laptops in a classroom with 2 radios.

Similar Messages

How to push EAP-TLS configuration Profile and Certificates to Mac books and Iphones

Hi Team,
We were able to push the EAP-TLS configuration profiles and certificates to windows devices via group policy. However, we're now looking to see how we can accomplish this for Mac book and iphones? Is there an open source application or something we can leverage to do this?
Thanks

I think ammahend was looking for a rough count which is what my question was going to be. The reason I would ask this is that if the device count is low then you could manually provision certs on those devices. Not ideal since you will have to manually generate CSRs, get them signed and then installed on the machines.
Another way to do this is if you have an MDM solution in place. You can have the MDM integrate with your CA via SCEP and then on-board devices that way. You don't have to integrate ISE with MDM (advanced licenses needed) as you can only have ISE check for the cert and only perform EAP-TLS authentications.
Hope this helps!
Thank you for rating helpful posts!

EAP-TLS 802.1x certificate issue..

Hi All,
I m trying to setup eap-tls 802.1x using ACS SE 4.1.1.23.4 , WLC & CA. The problem i m facing is with installing the CA certificate on ACS appliance. Tried everything from cisco docs but not able to install certificate as its giving " Unsupported private key file format." The steps whic i had performed are...
1) Generate Certificate Signing Request:
Certificate subject ---- CN=idea_acs_01
Private key file ---- privatekeyfile.pem
Private key password -- cisco
Retype private key password -- cisco
Key length --- 1024
Digest to sign with --- SHA1
Then coppied the certificate signing request from the right side & pasted it on CA using "advanced certificate request" & then "Submit a certificate request by using a base-64-encoded CMC or PKCS #10 file, or submit a renewal request by using a base-64-encoded PKCS #7 file" option on CA & pasted the output in Base-64-encoded
certificate request. Then issued the certificate from CA & downloaded it on my desktop & then from my desktop to FTP server.
Even made a file naming privatekeyfile.pem with the output got during Generating Certificate Signing Request & uploaded the same on FTP.
2)Install ACS Certificate:
Then downloaded the certificate certnew.cer from FTP server using Download certificate file option. And also Download private key file from the FTP & typed password cisco. But after Submiting it gives error:
"Unsupported private key file format."
m not able to get why this srror is comming. Even tried all the steps above changing the format of Private key file ie .pvk , .pk but its not working for me.
Can anyone guide me whats the issue. Thanks in advance..
Regards,
Piyush

Have you looked at this:
http://www.cisco.com/en/US/tech/tk59/technologies_tech_note09186a00804b976b.shtml#appb
Try to open up the certificate and verify that it looks something like this:
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

ISE & EAP-TLS Wired document

All,
Is there a document out there that explicitly shows wired authentication via EAP-TLS and explains the steps?
I have a good handle on what's needed, but I had trouble finding relevant documentation.

Please review the below link:
http://http://www.cisco.com/en/US/docs/solutions/SBA/August2012/Cisco_SBA_BN_LANAndWirelessLAN802.1xAuthenticationDeploymentGuide-Aug2012.pdf

8021.x EAP-TLS "User" vs "System" profile problems

Hello. I have a macbook using EAP-TLS (wired) with digital certificate authentication. Finally, it's working but I have the following workarounds/questions.
1. I have had to set the Username field to "HOST/<machine FQDN>". Other systems (ie: Windows) prepend "HOST/" automatically. Is this a known limitation or is there something I can/should do to have OS/X pull out the certificate identity and put it in as "host/identity" in response to the Identity EAP request?
2. This works fine for USER profiles, but I cannot get a SYSTEM profile to work. When I setup a SYSTEM profile, it screws with the keychain (my root CA has to be explicitly trusted, and the SYSTEM profile only turns on Trust for eapolclient), and the auth fails. There's not enough logging detail (LogLevel=1 only gives you a network trace...) to see what's going on, so I'll ask the experts here - what's going on?
I concede that I have played around with System profiles quite a bit, so maybe I need to delete the system profile and restart but I don't know how to do that.
Thanks!

Assuming you're using the stock XP wifi client.
When running XPSP3, you need to set two things:
1) force one registry setting.
According to
http://technet.microsoft.com/en-us/library/cc755892%28WS.10%29.aspx#w2k3tr_wir_tools_uzps
You need to force usage of machine cert-store certificate:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EAPOL\Parameters\General\Global]
"AuthMode"=dword:00000002
2) add the ACS certificate signing CA to the specific SSID profile "trusted CA".
- show available wireless networks
- change advanced settings
- wireless networks tab
- select your SSID, and then hit the "properties" button
- select authentication tab, and then hit "properties" button
- search for your signing CA, and check the box.
I did with a not-so-simple autoIT script, using the "native wifi functions" addon.
Unfortunately I'm not allowed to share the script outside the company, but I'll be more than happy to review yours.
please cross reference to
https://supportforums.cisco.com/message/3280232
for a better description of the whole setup.
Ivan

EAP-TLS and ISE 1.1 with AD certificates

Hello,
I am trying to configure EAP-TLS authentication with AD certificates.
All ISE servers are joined to AD
I have the root certificate from the CA to Activie Directory installed on the ISE servers
I created the certificate authentication profile using the root certificate
I have PEAP\EAP-TLS enabled as my allowed protocol
I am getting the following error for authentication:
"11507 Extracted EAP-Response/Identity
12500 Prepared EAP-Request proposing EAP-TLS with challenge
11006 Returned RADIUS Access-Challenge
11001 Received RADIUS Access-Request
11018 RADIUS is re-using an existing session
12301 Extracted EAP-Response/NAK requesting to use PEAP instead
12300 Prepared EAP-Request proposing PEAP with challenge
11006 Returned RADIUS Access-Challenge
11001 Received RADIUS Access-Request
11018 RADIUS is re-using an existing session
12302 Extracted EAP-Response containing PEAP challenge-response and accepting PEAP as negotiated
12318 Successfully negotiated PEAP version 0
12800 Extracted first TLS record; TLS handshake started
12805 Extracted TLS ClientHello message
12814 Prepared TLS Alert message
12817 TLS handshake failed
12309 PEAP handshake failed"
I have self-signed certificates on the ISE servers – do they need to be signed by the same CA as the client?
Any other issues I am missing?
Thanks,
Michael Wynston
Senior Solutions Architect
CCIE# 5449
Email: [email protected]
Phone: (212)401-5059
Cell: (908)413-5813
AOL IM: cw2kman
E-Plus
http://www.eplus.com

Please review the below link which might be helpful :
http://www.cisco.com/en/US/solutions/collateral/ns340/ns414/ns742/ns744/docs/howto_60_byod_certificates.pdf
http://www.cisco.com/en/US/docs/security/ise/1.1.1/user_guide/ise_man_id_stores.pdf

EAP-TLS configuration issues

Hi ,
I am trying to set up a mixed vendor NIC wireless environment and have opted to use EAP-TLS. I am however having some problems getting it to work. I am using AP1100, Aironet 350 PCMCIA cards , Microsoft CA, and ACS3.1. I have successfully setup the client and ACS side certificates and followed the instructions on the EAP-TLS Deployment Guide for Wireless networks which I downloaded off CCO. When I run a "debug radius" on the Access point I dont see any debug info. When I reconfigure everything for LEAP I can then see the AP radius debugs. Does anyone have any tips or recommendations ? I have upgraded XP to service pack 1 ? If you could perhaps direct me to a more comprehensive installation document I would also appreciate it .
Many thanks

Hi,
unfortunately I have no answer for your current issues. I have post this message to ask for your help. I have the same issue that you talk about.
I'm trying to deploy a WLAN with EAP-TLS XP clients but without success. With LEAP all work fine and I can see AP debugs but not with EAP-TLS.
I think certificates works fine because the same user unable to authenticate with AP1100 is able to authenticate with EAP-TLS with Catalyst 2950.
I have see the following messages in EAPOL.log
(Win XP Prof. with SP1)
[1144] 17:41:25: ElProcessEapConfigChange: Modified SSID non-NULL, PCB SSID NULL
[1144] 17:41:25: ElProcessEapConfigChange: Finished with error 0
Please, could you tell me your workaround?
Thanks in advance.

EAP-TLS with machine certificate

Hello all,
I'm looking for a solution to authenticate both machine and wireless users. I've been finding out solutions like EAP-TLS using the machine certificate to stablished the tunnel and authenticating user credentials (LDAP store) over this tunnel. Now i want to know if is possible to use this configuration using an ACS Radius servers and what SOs are supported to do this without external supplicants (Windows XP, Windows 7, Windows 8, iOs, Android...).
Thanks a lot.
Best regards.

Hi Alfonso,
Certificate Retrieval for EAP-TLS Authentication
ACS 5.4 supports certificate retrieval for user or machine authentication that uses EAP-TLS protocol. The user or machine record on AD includes a certificate attribute of binary data type. This can contain one or more certificates. ACS refers to this attribute as userCertificate and does not allow you to configure any other name for this attribute.
ACS retrieves this certificate for verifying the identity of the user or machine. The certificate authentication profile determines the field (SAN, CN, SSN, SAN-Email, SAN-DNS, or SAN-other name) to be used for retrieving the certificates.
After ACS retrieves the certificate, it performs a binary comparison of this certificate with the client certificate. When multiple certificates are received, ACS compares the certificates to check if one of them match. When a match is found, ACS grants the user or machine access to the network.
Configuring CA Certificates
When a client uses the EAP-TLS protocol to authenticate itself against the ACS server, it sends a client certificate that identifies itself to the server. To verify the identity and correctness of the client certificate, the server must have a preinstalled certificate from the Certificate Authority (CA) that has digitally signed the client certificate.
If ACS does not trust the client's CA certificate, then you must install in ACS the entire chain of successively signed CA certificates, all the way to the top-level CA certificate that ACS trusts. CA certificates are also known as trust certificates.
You use the CA options to install digital certificates to support EAP-TLS authentication. ACS uses the X.509 v3 digital certificate standard. ACS also supports manual certificate acquisition and provides the means for managing a certificate trust list (CTL) and certificate revocation lists (CRLs).
Digital certificates do not require the sharing of secrets or stored database credentials. They can be scaled and trusted over large deployments. If managed properly, they can serve as a method of authentication that is stronger and more secure than shared secret systems.
Mutual trust requires that ACS have an installed certificate that can be verified by end-user clients. This server certificate may be issued from a CA or, if you choose, may be a self-signed certificate
Also check the below link,
http://www.cisco.com/en/US/docs/net_mgmt/cisco_secure_access_control_system/5.4/user/guide/users_id_stores.html#wp1170404

EAP-TLS client security policy enforcement question using ISE

Hi Experts ,
I have remote site connected to HQ wireless controller and cisco ISE used as RADIUS server . I am using EAP-TLS authentication method where client will validate the server certificate and server will validate the client certificate.
I am using EAP-TLS and machine authentication.
In case of server certificate installation using internal PKI (Root CA ) server , I am quite clear that we can create certificate in ISE and can be signed by CA which will be used for EAP-TLS as well. however I am trying to under the client certificate installation.
how does client gets certificate from CA. is there any mechanism used by AD to import the certificate automatically to all the clients ?
and more important is , which certificate will be installed on client machines. Do we need to create certificate first from CA and save in repository and later can be installed same to client machines .... Sorry it could be microsoft AD related question however i am pretty sure that since we as a wireless techie , need to know even client side configuration.
This is all about certificate installation . how about entire security policy which is used for EAP-TLS ?
how will client wireless network adapter properties automatically configured with same SSID which is configured with EAP-TLS along with certificate validation ?
I am not sure ... will it get pushed through AD ? how will it happen ?
It would be really helpful if someone could put light on this ..

Hello Vino,
Some answers below :
how does client gets certificate from CA. is there any mechanism used by AD to import the certificate automatically to all the clients ?
You have templates in the certificate authority to user or machine certificate and you can apply these certificates to a group of machines or users using GPO in the Windows Server 2008.
It can be automatically because the machine can get it using GPO from domain and after can authenticates using 802.1X using these certificates received from this policy.
If you want a user certificate and get it manually you can access the CA too using the URL https://X.X.X.X/certsrv and request manually the user certificate using your domain credentials and install manually to authenticate using EAP-TLS with this user certificate.
In the Cisco ISE Side it needs to have a local certificate from the same client CA or from another CA and the Cisco ISE needs to trust in the clients CA Issuer to accept the client certificate and allow this one to access the network.
In the client side the same happens, the client needs to trust in the Issuer CA for the Cisco ISE certificate to validate ISE certificate and get access to the network.
and more important is , which certificate will be installed on client machines. Do we need to create certificate first from CA and save in repository and later can be installed same to client machines .... Sorry it could be microsoft AD related question however i am pretty sure that since we as a wireless techie , need to know even client side configuration.
If you have a Windows Server with GPO and a CA configured you can use some templates to apply automatically a machine certificate or user certificate to a group of machines or user, in the case of machines it can be get from the domain using GPO and in the case of user certificate it can be get manually or using GPO too.
This is all about certificate installation . how about entire security policy which is used for EAP-TLS ?
The EAP-TLS is the most secured method to use to authenticate devices in the network because you have certificates and you have trusted certificate authority that you trust and only devices who has certificates from these CAs will be allowed to access the network.
Another method very secured is EAP-FAST with machine and user certificate that the ISE will validade both the machine and user certificate before allow this one to get access to the network.
how will client wireless network adapter properties automatically configured with same SSID which is configured with EAP-TLS along with certificate validation ?
You can apply it too using GPO in the Windows Server to a domain machine but when you have a machine that is not a domain machine you can use a user certificate to authenticate this one and need to install manually the user certificate in that machine to authenticate the user to wireless network and create SSID specifying the policy that is EAP-TLS.
Remember that client machine needs to have the CA issuer for the Cisco ISE certificate to trust in the Cisco ISE and get access to the network and the opposite too (ISE needs to have the CA Issuer to trust in the client)
I hope it helps.

Cisco ACS with External DB - EAP-TLS

Hi Guys,
I understand how the EAP-TLS exchange works (I think), but If I have a client (wireless or wired) that is using EAP-TLS with an ACS, can I confirm the following.
Let say both user and computer certs are employed:
1. Both Client and ACS perform check with each others certs to ensure they are know to each other. The eap-tls exchange.
2a. At some stage and I am assuming before the eap-tls success message is sent back to the client, the ACS has to check if either the username or computer name is in the AD database?
2b. Wot is the paramater that is checked against the AD database?
I read here that it can be : http://www.cisco.com/en/US/docs/net_mgmt/cisco_secure_access_control_server_for_windows/4.1/configuration/guide/peap_tls.html#wp999517
Client Certificates
Client Certificates are used to positively identify the user in EAP-TLS. They have no role in building the TLS tunnel and are not used for encryption. Positive identification is accomplished by one of three means:
CN (or Name)Comparison-Compares the CN in the certificate with the username in the database. More information on this comparison type is included in the description of the Subject field of the certificate.
SAN Comparison-Compares the SAN in the certificate with the username in the database. This is only supported as of ACS 3.2. More information on this comparison type is included in the description of the Subject Alternative Name field of the certificate.
Binary Comparison-Compares the certificate with a binary copy of the certificate stored in the database (only AD and LDAP can do this). If you use certificate binary comparison, you must store the user certificate in a binary format. Also, for generic LDAP and Active Directory, the attribute that stores the certificate must be the standard LDAP attribute named "usercertificate".
3. With the above, if options 1 or 2 are used (CN or SAN comparison), I assume this is just a check between a value pulled out of the CERT by the ACS and checked with AD, is that correct? With option 3, does the ACS perform a full compaison of the certificate between what the client has and a "client stored cert" on the AD DB?
Please can someone help me with these points.
I am so lost in this stuff :)) I think.
Many thx and many kind regards,
Ken

only TLS *handshake* is completed/succcessful, but because user authentication fails,
CryptoLib.SSLConnection.pvServerInfoCB - Process TLS data: SSL state=SSLv3 read client key exchange A
CryptoLib.SSLConnection.pvServerInfoCB - Process TLS data: SSL state=SSLv3 read certificate verify A
CryptoLib.SSLConnection.pvServerInfoCB - Process TLS data: SSL state=SSLv3 read finished A
CryptoLib.SSLConnection.pvServerInfoCB - Process TLS data: SSL state=SSLv3 write change cipher spec A
CryptoLib.SSLConnection.pvServerInfoCB - Process TLS data: SSL state=SSLv3 write finished A
CryptoLib.SSLConnection.pvServerInfoCB - Process TLS data: SSL state=SSLv3 flush data
CryptoLib.SSLConnection.pvServerInfoCB - Process TLS data: SSL state=SSL negotiation finished successfully
EAP: EAP-TLS: Handshake succeeded
EAP: EAP-TLS: Authenticated handshake
EAP: EAP-TLS: Using CN from certificate as identity for authentication
EAP: EAP state: action = authenticate, username = 'jatin', user identity = 'jatin'
pvAuthenticateUser: authenticate 'jatin' against CSDB
pvCopySession: setting session group ID to 0.
pvCheckUnknownUserPolicy: session group ID is 0, calling pvAuthenticateUser.
pvAuthenticateUser: authenticate 'jatin' against Windows Database
External DB [NTAuthenDLL.dll]: Creating Domain cache
External DB [NTAuthenDLL.dll]: Loading Domain Cache
External DB [NTAuthenDLL.dll]: No UPN Suffixes Found
External DB [NTAuthenDLL.dll]: Failed to get Domain Controller for trust dwacs.com, [Error = 1355]
External DB [NTAuthenDLL.dll]: Failed to get Domain Controller for trust enigma.com, [Error = 1355]
External DB [NTAuthenDLL.dll]: Failed to get Domain Controller for trust acsteam.com, [Error = 1355]
External DB [NTAuthenDLL.dll]: Failed to get Domain Controller for trust vikram.com, [Error = 1355]
External DB [NTAuthenDLL.dll]: Domain cache loaded
External DB [NTAuthenDLL.dll]: Could not find user jatin [0x00005012]
External DB [NTAuthenDLL.dll]: User jatin was not found
pvCheckUnknownUserPolicy: setting session group ID to 0.
Unknown User 'jatin' was not authenticated
So the EAP-Failure(Radius Access-Reject( is sent, not EAP-Success(Radius Access-Accept).
And any port/point wont be allowed to pass traffic unless the NAS device gets an EAP-Success(Radius Accept) for the user.
HTH
Regards,
Prem

EAP-TLS not working with IOS 4.1

Hello,
I've lot of iPhone in my enterprise,
I've configured it putting user certificate and authenticate on the wireless network using EAP-TLS mode, choosing user certificate and give the username, and it was working.
sometime "can't connect to network" append, but after lot of tries, it work.
when the network is configured, it's working all the time.
since 4.1.3, I can't configure this network, I can't approve my server radius certificate (so I succeed to authenticate from server)
I've already tried to put my root CA certificate in iPhone, doesn't change anything (It should be trusted ! all servers certificate are from this CA)
I've tried to preconfigure this wireless network with iphone configuration utility, not working.
Iphone 3GS, iphone 4 since IOS 4.1.3

Here is the dump log obtened via Iphone configuration utility, with certificate deployed but configuration manually
Oct 14 15:40:41 unknown wifid[29] <Error>: WiFi:[340292441.191866]: Processing link event UP
Oct 14 15:40:41 unknown kernel[0] <Debug>: AppleBCMWLANCore::setDISASSOCIATE() [wifid]:
Oct 14 15:40:41 unknown kernel[0] <Debug>: AppleBCMWLANCore::setASSOCIATE() [wifid]: lowerAuth = AUTHTYPE_OPEN, upperAuth = AUTHTYPE_WPA2_8021X, key = CIPHER_NONE , 802.1X .
Oct 14 15:40:41 unknown kernel[0] <Debug>: [6225.861292541]: AppleBCMWLANNetManager::prepareToBringUpLink(): Delaying powersave entry in order to get an IP address
Oct 14 15:40:41 unknown kernel[0] <Debug>: AppleBCMWLAN Joined BSS: @ 0xc0befa00, BSSID = 00:15:70:e6:6d:90, rssi = -41, rate = 54 (100%), channel = 1, encryption = 0x8, ap = 1, failures = 0, age = 9, ssid[11] = "TAO_Employe"
Oct 14 15:40:41 unknown kernel[0] <Debug>: AirPort: Link Up on en0
Oct 14 15:40:41 unknown kernel[0] <Debug>: en0: BSSID changed to 00:15:70:e6:6d:90
Oct 14 15:40:41 unknown eapolclient[410] <Notice>: eaptls_verify_server: server certificate not trusted, status 3 0
Oct 14 15:40:41 unknown Preferences[101] <Warning>: -[WiFiManager(Private) _enterpriseAssociationResult:withInfo:]: User Information required
Oct 14 15:40:41 unknown Preferences[101] <Warning>: -[APOtherNetworkController keyboardWillShow:]
Oct 14 15:40:42 unknown kernel[0] <Debug>: AppleBCMWLANCore::setCIPHER_KEY() [eapolclient]: type = CIPHER_PMK, index = 0, flags = 0x0, key lenght 0, key rsc lenght 0
Oct 14 15:40:43 unknown Preferences[101] <Warning>: -[VPNBundleController _vpnConfigurationChanged:] (0x278960:<VPNBundleController: 0x278960>): _serviceCount(3), serviceCount(3), toggleInRootMenu(0), RootMenuItem(1)
Oct 14 15:40:45 unknown wifid[29] <Error>: WiFi:[340292445.893128]: Already associating, will not queue request.
Oct 14 15:40:46 unknown UserEventAgent[12] <Warning>: Unable to cancel system wake for 2011-10-14 15:40:31 +0200. IOPMCancelScheduledPowerEvent() returned 0xe00002c2
Oct 14 15:40:51 unknown kernel[0] <Debug>: [6235.874083208]: AppleBCMWLANNetManager::handleDelayedPowerManagementTimeout(): Timed out waiting for IP address, entering powersave mode: 2

EAP-TLS over wireless

Quick question for you EAP experts out there.
I want to be able to deploy EAP-TLS I understand that you need a machine and user certificate, does this mean that i would have to place the cetificate for each user account on that paticular laptop if utilised by more than one menber of staff ?
Thanks in advance.
Chris

Hi Chris,
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If many users share clients, it can be problem that all users certificate have to be on the shared hardware. I had this issue in a school, and we ended up with using EAP-TLS and only hardware certificate. You don’t get full security in this case since you only verify the hardware, but on the other hand, the user have to log in to the domain, so users will be verified as well. Just not by the wireless system.
//Johan

PEAP vs EAP-TLS Wireless Authentication Method

Hi,
I'm looking at implementing Certificate based authentication in my 10k+ user Cisco Wireless Network and currently deciding between PEAP and EAP-TLS.
I read the following post which was very useful, however I see the post was back in 2005 and would like to check if EAP-TLS is easier to deploy now with Windows Server certificate auto-enrollment https://supportforums.cisco.com/thread/2142396.
Is it possible to deploy EAP-TLS reasonably easily with certificate auto-enrollment? We also have iPads on the network and guess certificates will still need to be manually installed on these devices?
We will eventually get ISE and Mobile Iron for BYOD, however they are not in my network and can't use them to deploy certificates yet.
Thanks,

Hi,
I'm looking at implementing Certificate based authentication in my 10k+ user Cisco Wireless Network and currently deciding between PEAP and EAP-TLS.
I read the following post which was very useful, however I see the post was back in 2005 and would like to check if EAP-TLS is easier to deploy now with Windows Server certificate auto-enrollment https://supportforums.cisco.com/thread/2142396.
Is it possible to deploy EAP-TLS reasonably easily with certificate auto-enrollment? We also have iPads on the network and guess certificates will still need to be manually installed on these devices?
We will eventually get ISE and Mobile Iron for BYOD, however they are not in my network and can't use them to deploy certificates yet.
Thanks,

Wired 802.1x EAP-TLS Server Certificate Problem

I have setup wired 802.1x authentication using EAP-TLS with ACS 3.3 and backend link to Active Directory. Root CA certificates are installed on the ACS and Client PC. Machine certificates and user certificates are also installed on Client PC. A Server certificate is installed on the ACS. All has been configured as detailed on the Cisco Web Site (numerous documents).
If I set the client to authenticate the Servers certificate I get a failure. The clients log (Cisco Secure Services Client) states:
11:48:53.088 Validating the server.
11:48:53.088 Server list is empty, trusted server can not be validated.
11:48:53.088 Server list is empty, trusted server can not be validated.
11:48:53.088 The server certificate is invalid, the common name ACS-One.rotherham.gov.uk does not match.
11:48:54.776 Port state transition to AC_PORT_STATE_UNAUTHENTICATED(AC_PORT_STATUS_ERR_SERVER_TLS_CERTIFICATE_REJECTED)
11:48:54.776 The authentication process has failed.
If I look at the Auth log on ACS (set to full logging) it states:
AUTH 08/27/2008 14:09:04 I 0701 1492 AuthenProcessResponse: process response for 'paul.kyte@domain' against Windows NT/2000
AUTH 08/27/2008 14:09:04 E 0350 1492 EAP: TLS: ProcessResponse: SSL handshake failed, status = 3 (SSL alert fatal:bad certificate)
If I configure the client to not check the servers certificate it all works ok.
Can anyone tell me why my server certificate is getting rejected?
Thanks,
Paul

If Cisco Secure ACS runs on a member server and any user is to be authenticated using EAP-TLS, you must complete additional configuration in Active Directory of the domain containing Cisco Secure ACS. The username that you configured to run all Cisco Secure ACS services must also have permission to read user properties in Active Directory, else EAP-TLS authentication fails.

802.1x with EAP-TLS Fails on Wired

Dear Colleagues,
I am currently encountering an issue which does not seem to make sense to me and hence checking if anyone of you have come across the same or can provide further input on how to proceed...
Setup :
1. Radius Server - Cisco ACS 1113 Engine
2. Authenticator - Cisco 6509 Switch
3. Supplicant - Windows XP SP2/3
Problem:
1. Supplicants fail to authenticate using EAP-TLS as the authentication method.
Errors Seen:
1. Cisco ACS Reports - Authen session timed out: Supplicant did not respond to ACS correctly. Check supplicant configuration.
2. Cisco Switch Reports - dot1x-err(Gi3/39): Invalid Eapol packet length = 1490
3. Supplicant Reports when Trace enabled in the RASTLS file - â>> Received Failure (Code: 4) packet: Id: 8, Length: 4, Type: 0, TLS blob length: 0. Flags:â and âCode 4 unexpected in state SentFinishedâ
Other Information:
1. Wireless Clients using the windows supplicant and EAP-TLS connect without any issue.
2. ACS has certificates issued by 3rd Party Root CA - Geotrust.
3. Clients have Certs issued by clients own CA infrastructure.
4. ACS has the clients Root CA cert in the trust list and hence why the wireless users work.
5. PEAP works fine on wired.
Any pointers appreciated. Happy to share logs from Switch / Supplicant and ACS if needed.
Thanks
Volven

Dear Colleagues,
I am currently encountering an issue which does not seem to make sense to me and hence checking if anyone of you have come across the same or can provide further input on how to proceed...
Setup :
1. Radius Server - Cisco ACS 1113 Engine
2. Authenticator - Cisco 6509 Switch
3. Supplicant - Windows XP SP2/3
Problem:
1. Supplicants fail to authenticate using EAP-TLS as the authentication method.
Errors Seen:
1. Cisco ACS Reports - Authen session timed out: Supplicant did not respond to ACS correctly. Check supplicant configuration.
2. Cisco Switch Reports - dot1x-err(Gi3/39): Invalid Eapol packet length = 1490
3. Supplicant Reports when Trace enabled in the RASTLS file - â>> Received Failure (Code: 4) packet: Id: 8, Length: 4, Type: 0, TLS blob length: 0. Flags:â and âCode 4 unexpected in state SentFinishedâ
Other Information:
1. Wireless Clients using the windows supplicant and EAP-TLS connect without any issue.
2. ACS has certificates issued by 3rd Party Root CA - Geotrust.
3. Clients have Certs issued by clients own CA infrastructure.
4. ACS has the clients Root CA cert in the trust list and hence why the wireless users work.
5. PEAP works fine on wired.
Any pointers appreciated. Happy to share logs from Switch / Supplicant and ACS if needed.
Thanks
Volven

Eap-tls wired 802.1x - certificate issue?

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