Cisco AAA/Identity/Nac :: 4506 - ACS 4.2 Authentication With Certificates
Jun 7, 2012
I have a Cisco 4506 With IOS 12.2 54SG1
Iam new on Acs 4.2 and i want to use Certificates to authenticate my windows XP Client and Igels.
On Windows Xp i selected : IEEE 802.1X Authentication enable EAP (Peap)
But i dont understand the Certification of ACS 4.2.
I generated a Self-Signed Certificate. Is this right ? and under installed Certificates the Certificate Status is okay.
Do i have to create for each windows Machine one user Account under user-Setup to authenticate the Machine?
Where do Windows Xp know whitch Certificate he have to take ?
I configures the Switch on Global Configuration like this:
aaa authentication login default group tacacs+ enable
aaa authentication enable default group tacacs+ enable
[Code].....
Iam triying to configure ist szenario till 4 days and it still dont work.. On Windows i Only get the Error" authentication failed" on the Switch the same : dot1x : Authfailed
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Apr 25, 2010
A PC with a machine cert gets connected to a switch running 802.1x. The switch uses EAP with .1x to query PC, handing this off to ACS, that bit I'm ok with. The ACS needs to query the CA server to authenticate the PC, its this process I'm not sure about.
Reading the documentation I think that I need to configure LDAP between the ACS and the CA, which is running on 64-bit 2008 server. But, ACS SE remote agent is 32 bit only.
Is this correct, if so how do I get ACS SE to communicate with a 64-bit 2008 CA server?
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Jun 2, 2011
Has anyone tried to get two factor authentication working with the asa 5505. I have a CA setup and the enrollment emails are being sent out. But when I go to login to the enrollment site at [URL]. I get a page not found.
I would like to have one factor be a username and password and the second factor being a certificate on the device.
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Dec 18, 2012
Recently we updated to the Anyconnect 3.0 client. I see the new 3.1 client is out and we are currently testing it for production. My question though is since updating to 3.0 our end users receive a message at the bottom of their client stating "No valid certificates available for authentication" They can still VPN in since we dont do certificate based authentication but we have been getting tons of questions on this. I would like to stop these messages from appearing and I am not sure if its just how the new client behaves or if its something configured on our ASA's.
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Jan 31, 2012
I have generated request and our CA server gave us two files, one is certificate from CA itself, one is the certificate CA created for the ACS. I used the "Bind CA Signed Cerficate" under "local certificated"Option to bind the latter. it shows successful.and a web access from any pc will give you error info, "that the security certificate presented by this website was issued for a different website's address." And all the while I dont know how to deal with the other file, which is "Internal CA certificates" I was try to use the first option import server option, but it seems not right,
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Feb 10, 2011
I want to use multiple cert (enterprise certs and verisign cert) for authentication in wireless.Users that have their computer in the domain should use EAP-TLS and PEAP (verisign) are for users in the domain but on non-domain computers.I can only enable one certificate in system adminstration->local server certificates-> local certificates to use EAP.I have installed both enterprise and verisign cert in the CA store in User and Identy store and enbled the enterprise cert for EAP-TLS.The EAP-TLS connection works fine when the enterprise cert is enabled for EAP (in local certificates) but PEAP does not. If I enable EAP on the verisign cert in local certificates the enterprise cert get EAP disabled and that authentication stops working av PEAP starts working.
Is the ACS5.2 only able to have one certificate enabled at the time for EAP?
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May 17, 2012
I'm dealing with a 4506 switch that whn I try to apply "sh auth sess int xx" I get "Invalid Input Detected" ... Is there any way that I can get the authenticated session over a port even if I can't apply "sh auth sess int"?
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Apr 23, 2013
how the certificates work when using PEAP on ACS 5.2.Currently we have clients which are Cisco wireless IP phones that are using the ACS server(s) for authentication to the wireless network. The phones are configured to use PEAP with server validation enabled. The phones have a Godaddy root certificate, and Godaddy intermediate certificates installed on them, (in addition they have all the certs that are on the phone by default). On the ACS server there is a certificate that is signed by Godaddy. This was creating doing the CSR process etc...
So from what I understand, because all the phones are set up to validate the server certificate, they require the public root certs and the intermediate certs that are installed on them, in order to validate the private cert that is on the ACS server. The private certificate (the one signed and issued by Godaddy), expires the middle of next year (2014) (a little ways off I know, but it is never too early be concerned about stuff). When we go to get a new private certificate for the ACS servers (or get a renewal) and when we install this new signed certificate onto the ACS servers…will all the clients still trust this new certificate, and everything will continue to work smoothly? Or will the clients all need to have new root certs installed, and new intermediate certificates installed? From what I can gather I think the first scenario should be the case, because the root certs and intermediate certs are there to trust certs that are signed by Godaddy, so as long as the new private certificate is signed by Godaddy everything should be okay.
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Sep 25, 2011
I'm looking for samples about anyconnect 2.x with PKI authentication through ASA 8.x and ACS 5.2.The CA could be a internal Microsoft CA.
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Jan 10, 2012
When I tried to import the file, there are two lines there, One is Certificate file, the other is for "Private Key File".
My question for you is, is this the private key of CA? My understanding has always been that the private key stays in CA only, not going to any other devices.
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Apr 3, 2012
I have been trying to figure out for days now how to get Windows XP/Windows 7 and Apple iPads to connect to a broadcasted SSID and authenticate with PEAP without getting prompted to verify a certificate that exists on ACS.
In Windows 7, I get a window that says the connection attempt could not be completed and get a warning that the certificate could not be validated. If I manually configure a wireless connection and specify PEAP to accept my trusted root certificate authority (in the default list), it doesn't prompt but having users do this is not acceptable and more work than to just verify when prompted. I have no control over the devices connecting so I can't push anything down using GPOs.
For the iPad, I get a similar message that the certificate authority can't be verified and you have to accept.
For the certs, I have tried GoDaddy and Starfield. How to get this working without getting prompted to verify/validate a certificate authority? If so, what cert are you using? I have the intermediate certs installed in ACS and Windows and iPads see them because as soon as I delete, the screen that pops up changes to my actual cert.
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Apr 29, 2013
Getting ready to order a SSL Certificate for my newly installed ACS 5.4 and before I did that i want to verify if ACS 5.4 supports Wildcard SSL's.
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Sep 17, 2012
I'm working on task to update the SSL certificate for an application. steps to upgrade the SSL, stuffs need to be checked before and after the installation and how to verify the new certificates.
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Jan 10, 2012
Our ACS v5.2.0.26 started to drop connection from wired and wireless connections, with a "Radius Request Dropped" message. The detailed message is : "RADIUS Request dropped : 11051 RADIUS packet contains invalid state attribute".This message is usually preceded with a "RADIUS Request dropped : 24444 Active Directory operation has failed because of an unspecified error in the ACS" error.The communication with Active Directory seems to be ok since worstations are getting a valid ip adress when connected to a non 802.1x switch port (Cisco 4506).
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Jan 16, 2012
I configured before ACS v4.2 to authenticate network devices using internal users at first, and if the user is not found use AD list users. But with v5.3 I have some problems doing this, on identity policies I use rule based result selection option, I configured 2 polices for Identity source, one for Internal Users and other policy for AD user, but it only works with the first policy, internal users or AD, but works only for the first policy identity. how to do that, if the user is not found on first policy, continue to the next policy.
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Jul 3, 2011
I need a specify users to allow access to particular devices and give privilege only for show command or show run. Here is how I tried to configured.
1. Configured two seperate Shell Profile and Command set with privilege level 4-5 and allowing only show run command
2. create seperate service selection rule with adding the require NDG and protocol TACACS and maching service "RestrictAccess"
3. In the RestrictAccess Service I have following configured; Identity: internal users, Group Mapping to a particular group where the user exists, authorization: matching the above created identity group, NDG, shell profile, command sets
All the steps are attached in the .doc file. However when I tried with the particular user he is able to access everything and he is not hitting the correct access rule.
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Feb 2, 2012
In order to restrict access to websites on our internal network, would we be able to put an ASA in front of the web server and force users to authenticate through the ASA and, once authenticated, allow only port 80 or 443 traffic for that use? The ASA would query the ACS 5.1 server for authentication/authorization using AD as the identity store. Is this even possible with TACACS?
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Apr 1, 2012
My customer has a large installed base of MACs, all connected via controller-based (5508) WLAN. He wants to grant access to the network based on the device's mac addresses and move the WLAN-clients to a specific VLAN.I added all devices with their mac addresses to the ACS internal identity store for hosts.According to the following message the client sends the user-login credentials (chegger) within the RADIUS-request instead of the clients mac address and of course it has to fail. After many configuration changes, I ended up always with the same result.
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Jun 13, 2012
I have question on EAP-TLS with ACS 5.2. If I would like to implement the EAP-TLS with Microsoft CA, how will the machine and user authentication take place? Understand that the cert are required on both client and server end, but is this certificate ties to the machine or ties to individual user?
If ties to user, and I have a shared PC which login by few users, is that mean every user account will have their own certificates?
And every individual user will have to manually get the cert from CA? is there any other method as my environment has more than 3000 PCs.
And also if it ties to user, all user can get their cert from CA with their AD login name and password, if they bring in their own device and try to get the cert from CA, they will be able to successfully install the cert into their device right?
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Jan 22, 2012
I have a new ACS 5.3 installation which I have joined to our AD Domain and added the directory groups into. I have also added all our devices into ACS and their groups etc but I am still only able to authenticate on the our switches with an internal ACS account, when I try with an external AD account the log shows the following error "Subject not found in the applicable identity Store (s)"
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Apr 18, 2010
We got recently a Cisco Secure ACS 1120 and i upgraded the Appliance to 5.1 from 5.0 with all your support
Now I need to integrate Cisco ACS 5.1 with RSA Authentication Manager 6.1 . I Successfully Downloaded config file from RSA ACE Server and exported into ACS 1120.
I also Added ACS as a NetOS Agent in the RSA Server , during the process i found few warnings . The ACE Server is not able to Resolve the IP Address to NAme ( DOes it Necessary ?? ).
I havent created any secret Key file for communication between ACS and RSA and encryption i used is DES.
Now when I log into ACS and search for Devices in the Identity Store Sequences i am not able to Look for RSA Token Sever .
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Nov 22, 2011
I have been trying to get our IPS (ASA-SSM-10 and 4260) to authenticate with Cisco Radius ACS 5.2 and they are not working. However, I was able to get them working with Microsoft Radius. Below is the logs from the IPS:
evStatus: eventId=1321566464942057375 vendor=Cisco originator: hostId: NACAIRVIDLAB1 appName: authentication appInstanceId: 350 time: 2011/11/23 17:50:38 2011/11/23 09:50:38 GMT-08:00 controlTransaction:
[Code].....
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Dec 13, 2012
If laptop/desktop goes on sleep mode or keep connected with interface configured for 802.1X for more than 12 hours it does not work or not connect to Exchange server, Cisco ISE console, office communicator..for re authentication i need to restart PC/ Laptop or unplug and replug lan cable from it!but before restarting i am able to ping all DNS, DHCP, OCS, everything..[code]
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Mar 9, 2011
I would like to konw does Cisco ACS 4.x / 5.x natively support Two factor authenication, but not act as a Radius Proxy?
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Feb 23, 2012
I need to limit to some AD groups, authentication with ACS 5.3.For example, i need that only users os somedomain.com/users/test1 are authenticatet via ACS --> ADS.
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Mar 4, 2012
I have a Cisco ASA (8.2) setup with remote access for my users using Cisco VPN client. The authentication is passed off to my ACS 5.3 which then checks with AD. What I've done so far is create Access Policy rule where I define specifically the Location and NDG where the ASA is and then a DenyAllCommands command set. This should pass authentications just fine but this also gives those users the ability to remote connect directly into the ASA and login successfully. Even though there is a Deny Commands there I still would prefer they get Access Denied as a message. If I do a Deny Access on the ShellProfile then this stops the login authentication altogether.
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Jun 14, 2011
We would like to enable ACS authentication to login to different routers (Cisco 881s) we got that are interconnecting with our WAN via VPN tunnels. We would like to avoid using public IP for the router to communicate and relay user/password info with the ACS server and rely on the server's private IP instead. The problem is that all the router's outside interfaces connect to the Internet using public IPs and when the router wants to communicate with the ACS server it will use its public-facing interface IP and that'll fail. We can ping the server obviously when we set the source to the internal LAN IP.
The question is is there a way to have the router communicate with ACS across the VPN tunnel using its private IP?
config being used and tested succesfully on local devices:
aaa new-model
tacacs-server host 10.x.x.x single-connection key xxxxxx
aaa authentication login tacacs-local group tacacs local
[Code].....
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Aug 17, 2011
I have a dot1x client with client certificate working well with my ACS 5.2 and EAP-TLS. Now I would like to configure the Re-Auth periode on the ACS 5.2, I did the following:
1. Configure a Access Profile with Reauthentication Timer = static and 30 seconds (see attachment ACS1.png and ACS2.png)
2. Enabled authentication periodic and authentication timer reauthenticate server on switchport
interface GigabitEthernet1/0/x
description to dot1x clients
switchport access vlan 5
switchport mode access
authentication event fail action authorize vlan 998
[code]....
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Aug 8, 2012
i am evaluating ACS 5.3 with an ASA5505, by using password management in the IPSec tunnel config i am able to authenticate the VPN clients using mschapv2, however, the SSH sessions are authenticated using PAP
I have looked for days and days for an answer without success, is this by design?
Cisco documents state that SSH can be authenticated via TACACS with PAP,CHAP or MSCHAPv1, however, It seems to be default to PAP
From Cisco Doc: TACACS+ Server Support # The security appliance supports TACACS+ authentication with ASCII, PAP, CHAP, and MS-CHAPv1
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May 13, 2011
I am getting ready to install a new ACS 5.1 server to replace my current 4.1 acs box. I wanted to start off with a fresh install rather than upgrading all of my 4.1 data.
Can I have devices (ASA for VPN authentication, routers & switches for user authentication) use both for authentication while I get all the users configured in the new box?
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Mar 10, 2011
I have a questión about radius authenticaction with AD, when I log in into the network with user in AD and I make a mistake in password my radius authenticaction event in ACS 5.2 dont show me this logg. only show the authentication succeeded but dont show me the authentication failed. Maybe i must to enable same service to show the authentiaction failed. The Voice authetication works fine..
This is the confg in the port of the switch:
interface FastEthernet0/12 switchport mode access switchport access vlan 2 switchport voice vlan 10 authentication port-control auto authentication host-mode multi-domain authentication violation protect authentication event fail action authorize vlan 11 authentication event fail retry 2 action authorize vlan 11 authentication event no-response action authorize vlan 11 authentication periodic authentication timer reauthenticate 60 mab dot1x pae authenticator dot1x timeout tx-period 10 dot1x max-reauth-req 3 spanning-tree portfast end
Vlan 2: DATA
Vlan 10: VOICE
Vlan 11: GUEST
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Sep 7, 2012
I configured ACS 5.3 and added AAA clients with TACACS+ server and shared secret key as cisco123. i did the below config on switch also. when i try to authenticate login with ACS it does not respond. Find the configuration and debug output.nd
In debug output it gives ruser and rem_addr is null. i did not understand why .
I am able to ping to ACS server and i used telnet 192.x.x.10 49 and it gives the proper output.
aaa new-model
aaa authentication login default group tacacs+ local
!
tacacs-server host 192.168.60.10 key cisco123
tacacs-server directed-request
ip tacacs source-interface Vlan172
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May 22, 2012
I notice 8.4(4) now has public key authentication (just like IOS - yay!) and found a couple of issues: The CLI config guide [URL] states incorrect syntax for adding the public key to the ASAThere is an undocumented ASA limit on the public key size supported
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