802.1x/EAP clarification and implementation

Dear SIr,
To setup LEAP authentication using ACS, the client needs a supplicant such as the ACU to run LEAP independent of OS.
Cisco AP will be the carrier of the EAP message between the client and the Radius server sitting between the client and the server. I know from the fact that Cisco AP support LEAP, PEAP, EAP-TLS, EAP-MD5 and EAP-SIM. From my understanding, those types of EAP mentioned earlier can be relay to the Radius server(ACS), am I right?
Does it mean that these messages are transparent from the AP point of view? If I replace the Cisco AP with other third party access point that they claim support 802.1x/EAP but they never specify the type of EAP protocol, can I still run LEAP with a third party AP though my client is Cisco and the Radius server is CSACS?
What type of OS or supplicant support EPA-MD5? I know that Windows XP and 2000 support 802.1x driver, what about their EAP protocol supported on XP and 2000?
Thanks.
Delon

I think the following document will clear most of your doubts,
http://www.cisco.com/en/US/products/hw/wireless/ps430/products_tech_note09186a008019fea2.shtml

Similar Messages

802.1x/EAP-TTLS and EAP Certificate Policies

Hello,
I am having a hard time with 802.1x authentication against a radius server I manage. Every time I try to connect, I get a pop up about certificate verification - the certificate cannot be verified because there are no explicit trust settings. This system is to be used to authenticate people on a wireless network we are setting up. The machines and people being authenticated are not managed - I do not have the ability to force a configuration on their computer.
After researching this it looks like OS X has certificate policies that are consulted depending on the certificate operation requested. For 802.1x, I think the EAP certificate policy and the x.509 basic policy are consulted. These policies are outlined here.
The problem is that when I get the certificate popup and hit 'View Certificate', I don't see anything that would explain why it is not being verified. Both the server certificate and the CA root certificate are listed as valid. There are no messages about insufficient extended key usage values or hostname mismatches or anything. How can I tell what is actually wrong?

I was hoping this could be accomplished without having to change the trust settings from whatever the default is. The people who will ultimately be using this are students and staff at a University - a moderate number of which are bothered by any appearance of lower security.
The root cert is in X509Anchors. The certificate CN is the IP address and the RADIUS server does not have a PTR record in the DNS server.
If I point Firefox at a website set up on the same machine with the same certificate, there are no complaints. If I use Safari, there is an error about the names not matching but the name listed on the cert according to Safari is the same name I typed in the address field and the same name listed in the ServerName configuration of the web server.
Just kind of a weird problem.

NAC-L2-802.1x (EAP-FAST) and Cisco Secure Services Client 5.0 in wired net

Hi!
(Sorry, if this is a wrong forum.)
Does anybody have any success with Cisco SSC and EAP-FAST in the wired network?
I'm going to use NAC, so I'm trying to set up EAP-FAST. I see the pop-up window on the client to enter user credentials and I see a lot of "debug radius" messages on my 3750 12.2(44)SE switch:
Access-Requests with User-Name="anonymous"
Access-Challenges (I see certificate is sent from ACS)
Access-Reject
CS ACS Failed Attempts Report shows "ACS user unknown" failure for "anonymous".
So far as I understood, EAP-FAST is a tunneled method and it uses "anonymous" to protect user's identity during phase 0 / phase 1 transactions. The actual username is sent in phase 2 transaction.
The following is excerpt from the CS ACS documentation:
"EAP-FAST can protect the username in all EAP-FAST transactions. ACS does not perform user authentication based on a username that is presented in phase one; however, whether the username is protected during phase one depends on the end-user client. If the end-user client does not send the real username in phase one, the username is protected. The Cisco Aironet EAP-FAST client protects the username in phase one by sending FAST_MAC address in place of the username. After phase one of EAP-FAST, all data is encrypted, including username information that is usually sent in clear text."
SSC 5.0 is indeed set up with "Unprotected Identity Pattern"=anonymous and "Protected Identity Pattern"=[username] using sscManagementUtility.exe
So, the question is: Why is ACS 4.1 trying to authenticate username "anonymous" if it knows that the user is fake? Does anybody have working configuaration for EAP-FAST in a wired network?
Any help is greatly appreciated.

Correct, ACS database wasn't selected on the NAP Authentication page. It works now, but I constantly get the following message in the Windows event log: "The Cisco Secure Services Client service hung on starting". This is Windows 2000 Advanced Server system with SP4. SSC was set up with no domain authentication, no machine authentication, single sign-on. After some time the SSC service starts, but at that time my PC is already put into the guest VLAN by the switch (the tx-period is 10 seconds):
POD1-SW#sh run int fa1/0/1
Building configuration...
Current configuration : 378 bytes
interface FastEthernet1/0/1
switchport access vlan 999
switchport mode access
dot1x mac-auth-bypass
dot1x pae authenticator
dot1x port-control auto
dot1x timeout reauth-period server
dot1x timeout tx-period 10
dot1x reauthentication
dot1x critical
dot1x critical recovery action reinitialize
dot1x guest-vlan 91
dot1x critical vlan 11
spanning-tree portfast
end
After all the VLAN is reassigned by the switch, but the delay is too high. How can I troubleshoot this?
Thx.

Standard 802.1x EAP

Hello,
I need to set-up a wifi access using 802.1x EAP security, and it seems that option is not available at least in my device. Can I install this standard somehow? Where can I find it?
Thanks a lot.

You are correct. You would need to enable NPS services in one of your servers.
If you are going with NPS then you can use either EAP-TLS or PEAP. TLS will require every device to have a certificate, so if you already have a pki infrastructure that works. PEAP only requires the server to have a certificate.
Personally I would go with PEAP. Everything supports it and you don't have to provision certificates for everything.
Steve
Sent from Cisco Technical Support iPhone App

ISE 802.1x EAP-TLS machine and smart card authentication

I suspect I know the answer to this, but thought that I would throw it out there anway...
With Cisco ISE 1.2 is it possible to enable 802.1x machine AND user smart card authentication simultaneously for wired/wireless clients (specifically Windows 7/8, but Linux or OSX would also be good). I can find plenty of information regarding 802.1x machine authentication (EAP-TLS) and user password authentication (PEAP), but none about dual EAP-TLS authentication using certificates for machines and users at the same time. I think I can figure out how to configure such a policy in ISE, but options seem to be lacking on the client end. For example, the Windows 7 supplicant seems only able to present either a machine or user smart card certificate, not one then the other. Plus, I am not sure how the client would know which certificate to present, or if the type can be specified from the authenticator.

Hope this video link will help you
http://www.labminutes.com/sec0045_ise_1_1_wired_dot1x_machine_auth_eap-tls

Cisco ISE for 802.1x (EAP-TLS)

I work for a banking organization and security is an area that needs to be improved continuously. I am planning on implementing Cisco ISE for 802.1x together with a Microsoft PKI for certificate issuing and signing.
I am currently trying to implement this in our test environment and I have managed to do a few basic bootstrapping tasks. I need someone to push me into the right direction as to how I can achieve what i am seeking.
I will use Cisco 2900 series switches on the access layer and a few HP switches as well which supports 802.1x.
I want to configure the ISE to process authentication requests using 802.1x EAP-TLS (Certificate Based). All the workstations on the domain needs to authenticate itself using the certificates issued to it by the Certificate Issuing Authority.
I have already managed to get the PKI working and have rolled out the certificates on all the workstations on the test environment. I can't seem to configure the Authentication portion on the ISE.
I request if someone can guide me or direct me to materials that can help achieve the above requirements. The guides available on the Cisco website are overwhelming and I can't seem to figure out how I am supposed to configure the authentication portion.
My email: [email protected]
Cheers,
Krishil Reddy

Hello Mubashir,
Many timers can be modified as needed in a deployment. Unless you are experiencing a specific problem where adjusting the timer may correct unwanted behavior, it is recommended to leave all timers at their default values except for the 802.1X transmit timer (tx-period).
The tx-period timer defaults to a value of 30 seconds. Leaving this value at 30 seconds provides a default wait of 90 seconds (3 x tx-period) before a switchport will begin the next method of authentication, and begin the MAB process for non-authenticating devices.
Based on numerous deployments, the best-practice recommendation is to set the tx-period value to 10 seconds to provide the optimal time for MAB devices. Setting the value below 10 seconds may result in the port moving to MAC authentication bypass too quickly.
Configure the tx-period timer.
C3750X(config-if-range)#dot1x timeout tx-period 10

Cisco ISE with EAP-FAST and PAC provisioning

Hi,
I have search with no result on this topic. So, Does anyone have implemented Cisco ISE authentication with EAP-FAST and PAC provisioning ?
Since I have an issue with internal proxy, user required to authenticate with an internal proxy before granting access to the internet.
If you have any documents, it would be appreciated for me.
Thanks,
Pongsatorn

From what I understand a Internet proxy PAC and a eap-fast PAC are two different purposes.
Is that what you are trying to get clarification on.
Basically eap fast PAC provisioning is a PAC that s provisioned when a client authenticates successfully. The client provides this PAC for network authentication and not proxy authentication.
Sent from Cisco Technical Support iPad App

802.1x eap-tls machine + user authentication (wired)

Hi everybody,
right now we try to authenticate the machines and users which are plugged to our switches over 802.1X eap-tls. Works just fine with windows.
You plug a windows laptop to a switchport and machine authenticates over eap-tls with computer certificate. Now the user logsin and our RADIUS (Cisco ACS) authenticates the user as well, with the user certificate. After eap-tls user-authentication the RADIUS checks if the workstation on which the user is currently logged in is authenticated as well. If yes = success, if no the switchport will not allow any traffic.
Now we have to implement the same befaviour on our MacBooks Pro. Here the problems start. First of all I installed user and computer certificates issued by our CA (Win 2008 R2). So far so good. Now I have no idea how to implement the same chain of authentication. I was reading countless blogs, discussions, documentations etc. about how to create .mobileconfig profiles. Right now im able to authenticate the machine, and _only_ if I login. As soon as I logout eap-tls stops to work. It seems that loginwindow does not know how to authenticate.
1) how do I tell Mavericks to authenticate with computer certificate while no user is loged in ? already tried profiles with
<key>SetupModes</key>
<array>
    <string>System</string>
    <string>Loginwindow</string>
</array>
<key>PayloadScope</key>
    <string>System</string>
but it does not work
2) How do I tell Mavericks to reauthenticate with user certificate when user logs in ?
Thanks

Unfortunatelly this documents do not describe how to do what I want.
I already have an working 802.1x. But the mac only authenticates when the user is loged in. I have to say that even this does not work like it should. If Im loged in sometimes i need to click on "Connect" under networksettings and sometimes it connects just automatically. Thats really strange.
I set the eapolclient to debugging mode and see following in /var/log/system.log when I logout.
Feb 20 18:39:09 MacBook-Pro.local eapolclient[734]: [eaptls_plugin.c:189] eaptls_start(): failed to find client cert/identity, paramErr (-50)
Feb 20 18:39:09 MacBook-Pro.local eapolclient[734]: en0 EAP-TLS: authentication failed with status 1001
Feb 20 18:39:22 MacBook-Pro.local eapolclient[734]: [eaptls_plugin.c:189] eaptls_start(): failed to find client cert/identity, paramErr (-50)
Feb 20 18:39:22 MacBook-Pro.local eapolclient[734]: en0 EAP-TLS: authentication failed with status 1001
this are only debugging messages I get. Looks to me like eapolclient is not able to find a certificate (?)
The certificates are in my System keychain.
Unfortunatelly apple also changed the loging behaviour of eapolclient, I dont see any eapolclient.*.log under /var/log
Any ideas ?

802.1x EAP-PEAP - Radius Question

We're going to be deploying a wireless solution to a customer at some point shortly. So far we have a WLC 2500 Series,
1140 LAPs, and a 2960-S switch. We're going to have Windows 7, iPhone, iPAD devices, and I was going to implement
802.1x EAP-PEAP. I'm going to need a RADIUS server, but I was just wondering is there a cheaper solution than just
getting a Cisco ACS to run a simple RADIUS server which is all I need.
Also, when the Supplicant sends its NAI in a EAP-ResponseIdentity message, what exactly is this username
and how does it differ from the username you provide after the secure TLS tunnel has been configured.

Hey John,
Yes, in fact its all about feeling comfortable. So here is a video showing LOCAL PEAP on a WLC.
http://www.youtube.com/watch?v=YIxG4OEfwtY
The 2000 is becuase there is a database limit this includes MACS, LOCAL ACCOUNTS and AP MACs for AP policy. The mac is 2048 .. Here I blogged about this ..
http://www.my80211.com/cisco-wlc-cli-commands/2009/12/27/configure-local-mac-authentication-on-cisco-wlcs.html
So yes it sounds right and you should be good.
Hope this makes you feel a little bit better with your direction. If this helps can you mark the question as answered ?
Thanks John!
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
‎"I'm in a serious relationship with my Wi-Fi. You could say we have a connection."

Production and Implementation

Hello Gurus,
                      I want the details like....In production support what are the our usual works(roles), and what we have to do.
                      If we are getting tickets, in which manner we have to respond for those tickets.
                      What are the exact daily works in a production support project. And what are the exact daily works in a implementation project.
                      What are the t-codes we have to be perfect in support and implementation.
Please help me
Thanks and Regards
Kumar.

Hi,
It may vary in different projects.
I can just give you a couple of general roles.
Migration project
Designing mapping documents in order to check the need of creation in BW.
Developing various objects like Cubes, ODS, Info Sources, InfoObjects etc.
Designing Transfer Rules and update rules including start routines, update routines and Transfer routines as per the requirement.
Scheduling Info Packages to carry out the data loading process. Involved in data loading from SAP R/3 to Source layer ODSs into BW. Loaded data using Data mart, as the Business layer and Report layer ODSs get loaded from source layer ODSs using data mart functionality of BW.
Involve in the backfilling of historical data from present sys to SAP BW .
Developing the Master/Transactional data process chains considering the dependency among the BW objects and automated the triggering and monitoring of the same on daily, weekly and monthly basis.
Transportation of various BW components.
Performing unit testing and data validation of newly developed and enhanced objects in Quality BW system in terms of providing an efficient solution.
Responsible for overseeing the Quality procedures related to the project.
Responsible to deliver (Transport into Prod) the object as per the scheduled deadlines; with accuracy of deliverables by considering the quality norms.
Involving in the Client/Onsite communication for any client side clarifications, for assignment of work, for discussing on project status related issues, etc.
Support project
Data Load Monitoring:
1.Carried out data load on a daily, weekly and monthly basis using Process chains from both SAP Source systems as well as Non-SAP Source systems such as Informatica.
2.Resolving Data load error such as Invalid characters, Time period conversion, Currency conversion, Duplicate records, etc
3.Ensuring the availability of the updated data in the datatarget on time.
4.Spooling out data through Infospoke from SAP BW to systems like Trillium, Ariba (Reporting Tool)
Ticket Resolution:
1.Process chain modification: Working on Optimizing Process chain by creating new process chain considering the load dependencies.
2.Reloading of R/3 data from different clusters Reconciliation issues
3.Enhancements as per Business requirement.
Additional responsibilities:
Preparing design documents from the Business Requirement docs and identified the relevant data targets for satisfying the customer requirements.
Creation of Operational manual: BW Run & Maintain Support.
Process Chain Detail Documentation (Sequencing & Dependency within Local Chains).
Monitoring checklist Document (From Process Chain Perspective)
BW Doc checklist preparation
Table space activity with basis team.
Data load analysis taking into account the CPU utilization.
Applying Support packs and performing ORT.
Most projects have different number of cubes with varying volume of data. You cant generalize this.
hope this helps,
Refer
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/08f1b622-0c01-0010-618c-cb41e12c72be
Roles & Responsibilities for Junior & Senior consultants(Technical)
Thanks,
JituK

Connecting iPads to an Enterprise Wireless 802.1x (EAP-TLS) Network Using Windows Server 2003 IAS

Hi there,
I am asked to deploy iPads on an 802.1x EAP-TLS WiFi network. The customer has a Windows Server 2003 IAS server providing RADIUS. There also is a Windows based CA infrastructure in place. This solution is in production and is already being used by other wireless devices. Could someone please highlight the configuration steps for the iPad deployment? The customer whishes to automate the initial deployment and the renewal of the certificates. I have a basic understanding of 802.1x, RADIUS, Certificates etc. in a Windows infrastructure but I am new to enterprise deployment of iPads. There is no MDM tool in place by the way...
I did find a Microsoft article which I think describes what needs to be done: http://blogs.technet.com/b/pki/archive/2012/02/27/ndes-and-ipads.aspx. This article basically states the following steps:
1. Create a placeholder computer account in Active Directory Domain Services (AD DS)
2. Configure a Service Principal Name (SPN) for the new computer object.
3. Enroll a computer certificate passing the FQDN of the placeholder computer object as a Subject Name, using Web Enrollment Pages or Certificates MMC snap-in directly from the computer (Skip step 4 if you are using the Certificates MMC snap-in)
4. Export the certificate created for the non-domain joined machine and install it.
5. Associate the newly created certificate to the placeholder AD DS domain computer account manually created through Name Mappings
The article then elaborates on specific steps needed for the iPad because it treats all certificates as user certificates. Can someone confirm this behavior??
Regards,
Jeffrey

Use VPP. Select an MDM. Read the google doc below.
IT Resources -- ios & OS X -- This is a fantastic web page. I like the education site over the business site.
View documentation, video tutorials, and web pages to help IT professionals develop and deploy education solutions.
http://www.apple.com/education/resources/information-technology.html
business site is:
http://www.apple.com/lae/ipad/business/resources/
Excellent guide. See announcment post -- https://discussions.apple.com/thread/4256735?tstart=0
https://docs.google.com/document/d/1SMBgyzONxcx6_FswgkW9XYLpA4oCt_2y1uw9ceMZ9F4/ edit?pli=1
good tips for initial deployment:
https://discussions.apple.com/message/18942350#18942350
https://discussions.apple.com/thread/3804209?tstart=0

802.1x EAP-PEAP over Ethernet need help !!!

I am trying to get wired 802.1x EAP-PEAP to work and after spending about 8 hours
troubleshooting this, I am not sure what else to do. Need help. Here
is the scenario:
- Cisco Catalyst 3350 switch running IOS versionc3550-ipservicesk9-mz.122-44.SE6.bin,
- Steelbelted/JUniper Radius Server version 6.1.6 on a windows 2003 server
with IP address of 129.174.2.7. This device is connected to the same switch above.
Firewall is OFF on the server, allow ALL,
- Windows 2003 Enterprise Server supplicant with the latest Service pack and patches. Again,
Firewall is OFF on the server, allow ALL. Juniper has verified the configuration settings
on the Supplicant machine. The supplicant has a static IP address of 129.174.2.15, same subnet
as the radius server, I just want enable EAP-PEAP so that user is forced to authenticate before
the port is activate to be "hot".
- Juniper TAC has verified the configuration on the Steelbelted radius for eap-peap
and that everything is looking fine,
I have verified that the switch can communicate fine with the radius server.
- Configuration on the switch for 802.1x:
aaa new-model
aaa authentication dot1x default group radius
radius-server host 129.174.2.7 auth-port 1812 acct-port 1813 key 123456
interface FastEthernet0/39
description windows 2003 Supplicant
switchport access vlan 401
switchport mode access
dot1x port-control auto
no spanning-tree portfast (does not matter if this is enable or disable)
lab-sw-1#
.May 20 07:52:47.334: dot1x-packet:Received an EAP request packet from EAP for mac 0000.0000.0000
.May 20 07:52:47.338: dot1x-packet:dot1x_mgr_send_eapol :EAP code: 0x1 id: 0x2 length: 0x0005 type: 0x1 data:
.May 20 07:52:47.338: EAPOL pak dump Tx
.May 20 07:52:47.338: EAPOL Version: 0x2 type: 0x0 length: 0x0005
.May 20 07:52:47.338: EAP code: 0x1 id: 0x2 length: 0x0005 type: 0x1
.May 20 07:52:47.338: dot1x-packet:dot1x_txReq: EAPOL packet sent out for the default authenticator
lab-sw-1#
lab-sw-1#sh dot1x interface f0/39
Dot1x Info for FastEthernet0/39
PAE                       = AUTHENTICATOR
PortControl               = AUTO
ControlDirection          = Both
HostMode                  = SINGLE_HOST
Violation Mode            = PROTECT
ReAuthentication          = Disabled
QuietPeriod               = 60
ServerTimeout             = 30
SuppTimeout               = 30
ReAuthPeriod              = 3600 (Locally configured)
ReAuthMax                 = 2
MaxReq                    = 2
TxPeriod                  = 30
RateLimitPeriod           = 0
lab-sw-1#
I am at a complete lost here. don't know what else to do. Someone with expertise in this realm please
help me how to make this work.
Many thanks in advance,

#1: dot1x system-auth-control is already in the switch configuration
#2: Not sure if you're already aware, the minute I entered "dot1x port-control auto", the command "dot1x pae authenticator" automatically appears on the interface configuration
The case is being worked on by Cisco TAC. One of the issues is the windows 2003 server supplicant refuses to work. Windows XP supplicant uses machine-authentication instead of user-authentication. Cisco TAC is looking into this issue.

Cisco ISE - eap-peap and eap-tls

Hi,
Does anybody have an example of an ISE authentication policy where authentication requests coming from a WLC can be handled by TLS and PEAP?
I dont seem to get that working, I do however make the ISE application crash with my config which is not the idea.
If peap use this identity source, if tls use 'this certificate authentication profile'.
Thx

OK,
so I have just fired up my lab and I actually created an Identity Sequence which contained my AD & my certificate profile.
The authentication policy was allowing EAP-TLS & EAP-PEAP.
I then created 2 authorization rules, 1 for users and 1 for machines permitting access based on windows AD group.
What i found out was that the Windows 802.1x supplicant can only support 1 method of authentication, so if you want this to work properly, you need a different supplicant. I think Cisco do a more advanced one, not sure. You can then specifically choose that for machine auth you use EAP-TLS and for User Auth you use EAP-PEAP.
In my setup. Machine auth ONLY happens when the user logs off the machine and it is sitting at Ctrl+alt+del so that it can still talk to the network and get all relevant updates etc. I found that not only did the machine authenticate using EAP-PEAP, it also authenticated using TLS... I think that is because of the wireless settings I had. I chose EAP-PEAP for wireless settings
When the user then logs in, the user account authenticates using EAP-PEAP. I dont think you can authenticate both the logged on user and the machine at the same time. Not with the native windows supplicant anyway. Windows either sends authentication request for the user or the machine but not both.
Hope that helps.
Mario

802.1x EAP-PEAPv0 (MSCHAPV2) with computer authentication

I am a network administrator at seven schools, and a few of these schools are now using 802.1x EAP-PEAPv0 (MSCHAPV2) with computer authentication only, for wireless security.
We are a mixture of 2008 and 2003 (Windows Domain) servers running IAS or NPS for RADIUS.
I push out the wireless client’s setting via group policy, and the clients are using WZC.
Every now and then, a client will be unable to authenticate/validate during the authentication phase.
Some clients this will never happen to and a few it will happen repeatedly.
To fix this I have to hard wire the computer and do a gpupdate, even though the computer already had the updates applied previously, and is still part of the domain.
Many of our classrooms lack network drops, so wireless is the best for us.
Except for this one downfall, it is working great. Any help is appreciated.

Hi Ryan,
Thanks for posting here.
Could you discuss the situation that you mentioned “a client will be unable to authenticate/validate during the authentication phase.
Some clients this will never happen to and a few it will happen repeatedly. ”
in detail ? Can you verify if there is any error or warring that relate with this authentication issue recorded in event log on client and radius server ?
Only certain computers are facing this issue or all?
What’s OS running on these client computers?
According the situation right now , I’d like to share some suggections with you:
1. An 802.1x client may fail to connect to an Radius server if the Trusted Root CA certificate that issued the Radius server certificate is not installed on
the client computer. Either verify that the trusted root authority is installed on the client computer or disable certificate validation on the client. To disable certificate validation, access the properties of the connection, and on the Authentication tab,
click Properties. Click to clear the Validate server certificate check box. EAP-TLS requires the installation of a computer certificate on each RADIUS server and a computer or user certificate, or smart card on all clients. PEAP-MS-CHAPv2 requires the installation
of a computer certificate on each RADIUS server and the root CA certificates of the issuing CAs of the RADIUS server certificate on each of the client computers.
2. Verify that Radius is configured for the logging of rejected authentication attempts to the event log. Try the connection again, and then check the system
event log for an IAS event for the failed connection attempt. Use the information in the log to determine the reason the connection attempt was either rejected or discarded. Logging options are configured on the General tab of the Radius server Properties
dialog.
3. Any rejected or discarded connection attempt recorded should identify the Connection Request Policy used. A RADIUS request message is processed only if the
settings of the incoming RADIUS request message match at least one of the connection request policies. Examine the conditions of the policy identified to see where the request fails.
4. Determine from the IAS system event log entries whether the authentication failure is for computer auth, user auth, or both. By default, Windows performs
an 802.1x authentication with computer credentials before displaying the Windows logon screen. Another authentication with user credentials is performed after the user has logged on, and if this fails the machine will be disconnected from the network. Similarly,
if computer authentication fails but user auth is successful, symptoms will include failure to process login scripts or apply group policies and machine password expiration will not be updated since the user will only be able to logon with cached credentials.
If you use a smart card for authentication, you can only perform user authentication because smart card usage requires manual entry of a personal identification number (PIN). There is no way to provide the PIN to unlock the smart card certificate during computer
authentication.
5. Examine the wireless trace logs captured and search for keywords error, failed, failure, or rejected. This should give an indication as to what point in the
authentication process the failure occurs.
Meanwhile, I ‘d like suggest you may start troubleshooting with following the guides below and see if it will help:
Windows Server 2003 Wireless Troubleshooting
http://technet.microsoft.com/en-us/library/cc773359(WS.10).aspx
Troubleshooting Windows Vista 802.11 Wireless Connections
http://technet.microsoft.com/en-us/library/cc766215(WS.10).aspx
Thanks.
Tiger Li
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Random computers running Windows XP have this problem. It does not happen to all of them at once.
It is very random. A computer that has been connecting to the secure network for weeks will all of a sudden not be able to connect. The message is “attempting to authenticate” and it never makes the connection.
I checked if logging is turned on and I can see successful events from computers that are working.
I can also see failed events from computers that are not ours that tried to connect to our wireless.
However for the computers that are having this problem there are no logged events.
It is as if they don’t even communicate with the server.
Other clients on the same AP are working fine. I rebooted the IAS service, and RADIUS clients, but this did not help.
I also checked all the settings and they are correct, using PEAP, and validating the server certificate is disabled.
I did notice that the firewall is also turned on through group policy when the domain is not available.
Do you think the firewall is blocking the communication?
I added an exception to port 1812 UDP and this did not make a difference.

802.1x EAP-TLS for wired users with ACS 5.5

Hi All,
We are configuring a new setup for wired users authentication with 802.1x(EAP-TLS). ACS 5.5 we are using as authentication server.
We have added the root CA(internal) certificate and certifcate for ACS signed by CA. Now We want to check the authentication is working or not . I hope both root CA and identity certifcate also we need to install in the laptops. But I am not sure how to download the certifcates for client machine manually from CA.
Kindly suggest on how to get certificates for clients both manually as well as automatically?
Thanks,
Vijay

Hi Vijay,
for the Wired 802.1x (EAP-TLS) you need to have following certificates:
On ACS--- Root CA, Intermediate CA, Server Certificate
On Client-- Root CA, Intermediate CA, User certificate(In case of user authentication) OR Machine certificae(In case of Machine authentication)
I am not sure which third party certificate are you using, If its in house Microsoft or any other certificate server then you need download the client certificate from the server itself.
In case of Microsoft, There will be a template for user certificate. You can select it and create user certificate
This one is an old document, But has steps to configure Machine certificate for the user, You can see the steps to download user certificate if its Microsoft server:
http://www.cisco.com/c/en/us/support/docs/security/secure-access-control-server-windows/43722-acs-eap.html#wc-2
In case You are using the third party certificate serevr , Then you need to check with them on how to download the user certificate
Cheers
Minakshi(rate the helpful post)

802.1x/EAP clarification and implementation

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