Cisco AAA/Identity/Nac :: 2960 - Manually Re-authenticate Dot1x Client?
Jan 17, 2013
I was looking for a way the manually re-authenticate dot1x client from cli and found this: [URL]
"You manually reauthenticate the client by entering the dot1x reauthenticate interface interface-id privileged EXEC command"
I've tried it 2960 with 12.2(58)SE and 15.0(2)SE, but it doesn't seems to be implemented. Have I missunderstood something? Or do you guys have any other command to accomplish a manually re-auth?
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Sep 12, 2007
Trying to authenticate a Wireless 1242 AP to a switch port with Dot1x enabled. It seems like the switch can't get the mac or doesn't ever start authentication for the port when I plug in an ap. The ap is configured to pull dhcp on start for fa 0, however never gets an address, even though the port should fail into guest network after auth fails.Any thoughts,, a debug only shows this...
*Mar 1 00:19:27.127: %IF-3-VLAN_NOT_CONFIGURED: Received dot1Q VLAN tagged packet on interface which does not have VLAN configured.
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Nov 2, 2011
I am seeing the following behavior when computers move from one switch to another with dot1x ONLY when there is a 'stupid' switch in between.
computer -------- 'stupid' switch ------- 2960
dot1x is working fine but when the computer is disconnected, the port still shows the authentication session id so when the computer connects to another port or switch, authentication succeeds but traffic doesn't pass. While I'm almost certain that the culprit is the 'stupid' switch that doesn't clear the session id, I have already tried another one and the problem remains so I'm actually just asking for a confirmation that all these 'stupid' switches present this behavior and if there is a workaround in this case.
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Jan 24, 2010
I want to setup the ACS 5.1 for dot1x-Port authentication. I want to make a machine authentication against an AD-Domain and I got the following error Message:24435 Machine Groups retrieval from Active Directory succeeded
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Apr 9, 2012
I have a 2960 sw configured for dot1x authentication, the problem is the Guest VLAN and Restricted VLAN didnot work. The switch port was stuck in authenticating status. The server is Juniper IC4500.
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Apr 5, 2012
This weekend we have upgraded the ios on quite a few switches on a larger site, the site is a mix of 2960 and 3560 switches and the previouse ios versions were 12.2.44 on most switches but some had an older 12.2.25.On monday when we came into work we got a call that most of the ports on these switches were an amber color and most people could't use the network.After some investigation we discovered that we had a problem with dot1x so for a quick solution we just removed it from the switches and restarted all the ports with no dot1x enabled,[code]
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Aug 12, 2012
Is it possible to set up a multi use port that will use dot1x to authenticate several laptops, only 1 connected at a time, but I need the phone to automatically connect without having to make changes to the phone config as I don't have access to the Cisco call manager to set up the authentication.
Setup would be using catalyst 3650x at the access layer, various Cisco ip phones models and a Cisco acs 4.2 server doing the authentication. The laptops would be plugged in through the phone. The switch is already in use and setup and using both data and voice vlans, but now I need to enable it for several users. The acs is already setup to authenticate our wireless network so I'm planning on using the same setup for the wired side.
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Aug 30, 2012
Is it possible to de-auth a client, and then make sure they have to enter the passphrase if they want to connect again?
I just cant seem to find this option anywhere in my routers configuration page.
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May 31, 2013
I have 3 ws-c3750-48ps in a stack and i'd like to enable dot1x on the stack I entered the commands: [code] I also have dot1x enabled on several interface on the 2nd and 3rd switches in the stack with these commands [code] dot1x successfully works on these ports and I see the logs in acs, heres where the problem comes in when i try to enable dot1x using the above commands on any interface on the first switch in the stack it doesn't work its like the switch doesn't support dot1x. I'm assuming that there is a bug in version 3 but after googling I didn't come up with much.
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Feb 22, 2013
I have installed ACS 5.4 and we are looking to authenticate our Anyconnect users with ACS via Active Directory. I think I have the correct commands in our ASA ( we had ACS 4 and authenticated our anyconnect users ).
I also have configured ACS to use Active Directory and installed the server side cert in ACS. I'm just uncertain how to program ACS to use the security group that I have setup in Active Directory.
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Jul 20, 2011
I am supporting a small cluster of AP541N WAPs and would like to know if there is an easy way to manually disconnect an associated client (recognized by MAC address) from the Associated Clients screen in the Access Point Configuration Utility Status view. That type of feature might come in handy with unruly bandwidth hogs down the road.
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Aug 11, 2011
I configured dot1x on my swicth 4500 series, Here is the interface configration:
interface FastEthernet3/2
description Test dot1x
switchport mode access
load-interval 30
authentication event fail action authorize vlan 800
authentication host-mode multi-host
authentication port-control auto
[code]....
When I remove the port-control configuration on the interface, the status change to UP/UP.
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Oct 13, 2011
I got error message when I convert to certificate authencate via tunnel group.
error message: "certificate validation failure"
client prompte me that "your client certificate will be used for authenticate" but none certificate list popup even i disabled "autpmatic certificate selection" preferences.
some information about my configuration :
ASA 8.2(2)4
Anyconnect VPN 2.5.1025
authentication against aaa is working
some key point:
ASA:
ssl trust-point remote.apac outside
tunnel-group APAC_AnyConnect webvpn-attributes
authentication certificate
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Aug 30, 2012
Having an issue with Macbook authentication. All Macbooks at this one site, on same switch, going to same RADIUS server, work except for one. Looking at logs it appears server and client never exchange certificates. Attached is log for failed Macbook authentication.
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May 24, 2011
I think i've got everything set up to authenticate against AD for Tacacs+ device logins. When i check the logs, i see:"24408 User authentication against Active Directory failed since user has entered the wrong password". This leads me to believe that it is checking AD correctly, however if i enter the password correctly for the same AD user, there is no log at all...no pass, no fail.
If i look at the Tacacs debugs on the switch, i see the following:May 25 10:55:07.927 CDT: TAC+: ver=192 id=874699084 received AUTHEN status = ERRORMay 25 10:55:09.932 CDT: TAC+: send abort reason=Unknown
Obviously the switch is communicating to ACS, and ACS is passing info back to the switch. ACS also appears to be communicating effectively with AD since it knows when i put in an incorrect password for the specific user.
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Aug 20, 2012
we have deployed L3 in-band scenario for wireless 2 years ago and the solution was working without any problem. we have upgrade wireless controller to 5508, since then, when users login to the first page and certified, and they want to browse to the internet, NAC redirects the web page and ask for authenticatin again, despite the users' devices are being shown as certified devices in the list.
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Feb 9, 2012
We have remote users that dial-in over ISDN to a Cisco 2911. We have configured AAA to pass the authentication off to a RADIUS server. Once successfully authenticated, the router permits the users to access a single web server. However, we need to do some testing in our test environment, but unfortunately we don't have an ISDN line to test with. We have created a little environment in our LAB using a 2911, a switch, a RADIUS server & web server. I was hoping that we could simply create a "user" VLAN off the back of the 2911 to simulate our remote users, and access the web site from the test usr PC's over the LAN. I was hoping that the 2911 would be able to intercept the connection and pass the authentication off to the RADIUS server (as it does with the PPP ISDN traffic). But I cannot find anyway to do this, because I can only configure AAA to offload either PPP traffic or telnet/ssh connections to the router itself.
In summary what I want is for a user to access an internal web site over a LAN interface of a 2911 - but have the 2911 authenticate the user via a remote RADIUS server first. Is there a way to configure a 2911 (or any router!) to do this?Is the answer to configure port-based authentication (802.1X) on the switch?
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Jul 30, 2012
I have setup Cisco Identity Service Engine (1.1.1) with Wireless LAN Controller (7.2.110)Everything is complete unless the URL redirect. My guest client can join the Guest SSID and also can authenticate to ISE.But after they success to authenticate with ISE, the URL in the browser doesn't change to the pre-configure. It still be something like [URL]. Anyway the content in the browser is changed to the URL that being configured such as url...How can I do with this situation cause everything is working fine but only the browser URL that is not change to the preconfigure one.
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Jun 3, 2012
Have set up a pair of ACS 5.3 servers and have set up device administration authentication be passed through to an RSA server via RADIUS. All works great.
What we want to do is go a step further and set the system up so that ACS Administrators also have to authenticate to the ACS system by RSA via RADIUS (the same as the Device Authentication we've set up) for ACS administration tasks.
Looking at the options available in the ACS Administration setup (administrator accounts etc) there doesn't seem to be an option to authenticate via another method apart from a local administrator account on the ACS.
Is it possible to do this?
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Aug 21, 2012
I have seen couple of people with win7 cannot authenticate to ISE: 12520 EAP-TLS failed SSL/TLS handshake because the client rejected the ISE local-certificate.I've thought of this: Maybe get a 3rd party cert (go daddy) and have that installed in ISE.I know i do have to make a CSR Cert.Sign.Request that matches cn=primary.ise.mydomain, would I also need a cert for secondary?
If I use LEAP as a preferred protocol then it doesn't ask for cert and users are authenticated successfully.I know they have to say do not validate cert and all that but sometimes it doesn't popupt to them they just can't get on.Again maybe going wtih 3rd party certs will make it easier while benefiting from using PEAP?
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Jul 12, 2011
On an ASA5520 v7.2 I can only seem to authenticate to the console when using telnet and not ssh. I can connect using both methods, but just have trouble authenticating with ssh. Here are relevent lines related to the issue:
username user1 password ***** encrypted privilege 15username user2 password ***** encrypted privilege 15
aaa authentication telnet console LOCAL
aaa authentication ssh console LOCAL
telnet <my subnet> 255.255.255.0 Inside
ssh <my subnet> 255.255.255.0 Inside
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Jun 9, 2011
I have an issue with an implementation, I had a ACS R5.1 that I'm using to authenticate the wireless users with 802.1x, that's OK and working fine. Now I want to use the same ACS to authenticate wired users using MAB (for IP phones, printers, servers, and other devices) and 802.1x (for corporate users). I already configured the authentication services (MAB and 802.1x) on ACS, but when I'm doing tests I can see that for example the phones are trying to authenticate using the 802.1x rules of wireless connection, not using the MAB rules. [code]
You could also see an screen from the ACS in the attached file. On the picture remark you could see a IP Phone trying to authenticate using the wireless Access Services insted of using MAB.
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Sep 25, 2011
Having an issue with Cisco ACS v5.1.0.44 and the Cisco WLC 5508. Cannot get users to authenticate and keep getting error messages referring to EAP session timeouts from WLC filling our logs. Seems to be with this model WLC because we have Cisco 4400 WLCs pointing to the same ACS with no issues. Is there a bug or special configuration that is necessary to marry the 5508 with ACS v5.1.0.44?
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Dec 9, 2012
We are doing a new installation of a Cisco ACS 5.4 replacing a Microsoft NPS.
Recently I ran into issues with Lexmark wireless printers authenticating against the ACS 5.4.
While these printers work against the old Microsoft NPS we want to replace, I get "11500 Invalid or unexpected EAP payload received" on the ACS.
Windows/Android/iDevices authenticate against the same SSID using PEAP. I suspect, we ran into
CSCtq46211 Bug Details
Lexmark Printers work with ACS 4 but not ACS 5 Symptom: Lexmark printers uzed to work with ACS 4.2 but they produce "internal error" on acs 5.1 or 5.2
Conditions: Not known exactly
Workaround:1st Found-In 5.2(0.26.3)
Fixed-In 5.3(0.40.7)
setting up a new VM with ACS 5.3 patching it to P7, reconfiguring and retest all the stuff we implemented during several days ist not an option.
The Cisco TAC refuses to open a SR because the product is under warranty only, and claims warranty only covers HARDWARE replacement... (and we ordered ACS is a VM,,,) Maybe I should burn the ISO image to a DVD and RMA it for repair .
Maybe Cisco could verify whether the fix for CSCtq46211 has been integrated to ACS Version 5.4.0.46-B.221 already or not ?
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Jul 22, 2012
Is it possible for ACS 5.1 to only allow specific AD users to authenticate the switches and routers? Currently What I have configured is only for all AD users. I can't seem to find a way to be selective.
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Jan 16, 2013
I'm having an issue with a cloned vm of our ACS. We are moving it to a different location. I was able to clone it and get it back on the network, but I can't authenticate to it from any of my switches. I do have an older version:5.2.0.26
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Nov 10, 2011
I am not sure what I am trying to do is possible, so I thought I would pose the question on here. In ACS 5.3, I would like to use an RSA server and AD to authenticate my network devices. So when I log into a router or switch I would enter my AD username, be prompted for my RSA token, then when I enable be prompted for my AD password, or visa versa. how to write an access policy to achive this?
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Mar 21, 2011
Rather than maintaining local accounts is it possible to authenticate admins against AD? I'm talking about administrators of the ACS server itself to be clear.
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Nov 13, 2012
I have a user named "testuser" and trying to authenticate from the xp computer but fails to authenticate. The ACS logs says that authentication failed, the user is in the local database but why it fails to authenticate?
I have cisco switch :
WS-C2960G-48TC-L 12.2(52)SE C2960-LANBASEK9-M
*Mar 8 04:03:55.030: AAA/BIND(00000029): Bind i/f
*Mar 8 04:03:55.173: %AUTHMGR-5-START: Starting 'dot1x' for client (782b.cbc9.a027) on Interface Gi0/2 AuditSessionID 0A6A00200000001924EBD428
*Mar 8 04:03:57.010: %LINK-3-UPDOWN: Interface GigabitEthernet0/2, changed
[Code]....
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Apr 8, 2009
The ACS can authenticate people using local database , it can also authenticate a single user (using windows database) if you are fast after the service is restarted , however after a few secounds, it fails to authenticate any users , the error we are seeing on the logs appear as authentication failure type : internal error. Also on the log files, the authentication request from the user does not appear in the correct group, it is thrown into the default group.
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Jul 16, 2012
I'm with one problem, my OS Lion don't authentication in the Secure ACS Version: 5.2.0.26.10.For the Mac Lion operating system to work you must put in execeção the MAC Address of your computer. I wonder how it could cause the OS to authenticate the ACS Lion.
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Apr 16, 2013
I have ACS 4 integrated with RSA 6.1, where users of ACS can authenticate their passwords with the rsa server.I am migrating users to ACS 5, and I want to integrate with rsa.
I am configuring rsa as “rsa secureID token servers”.But how should I configure the users on acs to authenticate the password with rsa?
Previously on acs 4, on the user page, in password field, I select authenticate with external DB, Also, any guide for the config on rsa 6.1 side (with acs 5)
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Aug 2, 2011
I'd like to configure wireless access from winXP to authenticate with our corporate Novell LDAP through ACS
Setup:
WinXP SP3 --> WLC 4402 --> ACS 5.2 --> Novell LDAP
1. Our Novell LDAP server uses secure LDAP (port 636) to authentication user.On ACS 5.2, when we configure this option we need to select Root CA. Should the Root CA in ACS must be the same as the LDAP server's? (the LDAP's certificate issuer)
2. What kind of authentication that this setup supports? Does it support PEAP/MSCHAPv2 as in Windows Zero Configuration or it only supports PEAP-GTC, EAP-FAST, EAP-TLS (which means I have to use Intel Proset/Wireless software to configure).
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