Unauthorized device logging in via Cisco Secure ACS 3.2

We have the Cisco Secure ACS v 3.2. There is a devices that we recently discovered is not added into the network configuration on the ACS. This device running IOS 12.2(29) does have all of the correct tacacs settings that should allow it to authenticate via Tacacs.
So basically, the ACS is allowing users to use this device to login, even though it's not in the Network Config.
When we look at the Logged-in Users report, it show the host name as "Tacacs+ Default". We aren't sure what that is supposed to mean, and why it's allowing it.
Thank You for your time,
Andrew

Andrew,
Make sure that you not using any Wildcards inplace to IP address in network configuration. Eg using 192.168.*.*
This will open tacacs request from whole network 192.168
Also check the passed attempts and check the NAS IP address from the where the request is coming. Search for that IP in network configuration and see if that IP belong to that switch in question. L3 switch can have multiple ip address.
If that IP belong to that swtich , then you need to take that out from network configuration.
Regards,
~JG
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Cisco Secure ACS 4.2 for Windows web-based Admin Console log in problems

To Whomever Can Assist,
I am running two deployments of Cisco Secure ACS for Windows 4.2 and I can login into the admin web-console just fine. However, when I create a new or test user that mirror my configuration that user cannot login to the admin web-console. The user can login it to devices with the appropriate privileges, but can't administer his/her account within ACS. This has proven very problematic and needs a remedy. Thanks for the assistance.

Bradbryant.dhs,
Where are you creating the new admin user who should have access to ACS web gui under internal users or administration.
Internal user and ACS administrator accounts are completely different.
Adding administrator account
http://www.cisco.com/c/en/us/td/docs/net_mgmt/cisco_secure_access_control_server_for_windows/4-2/user/guide/ACS4_2UG/Admin.html
Regards,
Jatin Katyal
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With Cisco Secure ACS 4.2 User accounts gets locked at first instance of wrong credentials even if configured for 3 attempts

Hello Everybody,
I am working with Cisco Secure ACS 4.2 and it is integrated with Active Directory at a Windows 2008 R2 functional level, user accounts that are set with lockout parameters (3 incorrect attempts) are locked out prematurely after the user enters the wrong credentials just once, the integration is done via LDAP.
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Hello Scott,
Thanks for your answer. However we checked the ACS logs and it shows that we entered bad credentials just once, but in the Active Directory our account sometimes is blocked because we get at least 2 and sometimes 3 failures. This problem is only presented when we authenticate Cisco devices or through VPN, in normal circumstances, when users enter bad credentials on their computers, it works fine.
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Reporting & Audit Compliance Solutions for Cisco Secure ACS

The Cisco Secure ACS Access Control Server is probably the worlds best selling remote access security solutions and its quite likely that you're already using it! Wouldn't it be great to know exactly what it was doing? Further still, when you have to provide audit documentation regarding your policies and how effective they are, how long does this take and what valuable data remains locked inside the ACS database and logs?
extraxi offer a range of products that deliver a complete solution for harvesting, managing and analyzing your ACS/SBR log data to meet the increasing demands for regulatory compliance (SOX, COBIT) and overall enterprise monitoring and security.
We are proud to supply customers including Intel, Ford, Lego, T-Mobile, US Dept of State, US Army, British Telecom, First Energy, TNT Express, Kodak and JP Morgan and many more so why not take a look at our industry leading solutions and evaluate the benefits for your organization...
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The best reporting system for Cisco Secure ACS and Funk SBR just got a whole lot better! Improved reports, enhanced filtering and query builder and now with up to 48GB internal storage based on SQL Server technology makes this the ideal solution for large or complex AAA deployments and those that need the additional functionality from the standard aaa-reports! tool.
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bump

About Cisco secure ACS v3.0

HI
I have rebuilt the Tacac server for cisco secure ACS v3.0 and then retore all the data via the "data restore" under the system configuration.
After rebuilt, it was only working for one day... and then it fails to authenticate users. I checked the event viewer, the error message is:
ODBC authentication dll failed to initalise, code -1110
and
CSMon message: Problem Logging on to CSTacacs. Got as far as Starting Processing in Auth module
any idea?
Thanks

Hi
When I tried to view it, it says:
This bug is no longer available in Bug Toolkit. Click bug ID for details.
would you be able to provide more information for this bug please?
Thanks
kind regards
Rachel

With Cisco Secure ACS For Windows TACACS+, authentication fails with AD

I am setting up a Cisco Secure ACS 4.2 server to act as a TACACS server for Switches and Routers I am using Windows 2003 server for the ACS,
and a Windows 2003 Active Directory server. The AD server is fine, as it is used for many other things.
I have set up ACS as defined nit he installation guide, including all the steps in the 'Member Server' section of the install guide
when using AD as an external database (i.e. setting up the services to run with a domain admin account, setting up a machine called 'CISCO'
on the domain etc).
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I've followed all the install guides to the letter. I need to get this up and running as soon as possible,
so am looking forward to finding out if anyone can help me with this one!
THanks and regards
Sharan

Hi Jesse,
Thasts a great answer and Soution.
My previous version was 4.2 and it was installed on 64 bit machine hence getting internal Error.
After this answer i have upgraded it to ACS4.2.1 and its started working fine
Thanks very much for the help
Dipu

Cisco Secure ACS

Hi all,
With the Base license, a Cisco Secure ACS 5.6 appliance or software virtual machine can support the deployment of up to 500 network access devices (NADs) such as routers and switches. These are not authentication, authorization, and accounting (AAA) clients. The number of network devices is based on the number of unique IP addresses that are configured.
So, when i have 1 firewall for vpn gateway, and using acs as an aaa server, how much network access device which is counted ? 1 or as many as vpn client connected to the firewall ?
500 network access device means concurrent connection or not ?

ACS is based on the number of NADs (Network Access Devices) like switches, routers, ASAs, etc. So in your example, your Firewall will consume 1 license regardless of the total number of VPN sessions.
With ISE, the licenses are based on the total number of endpoints. So in your example, each VPN session will take a license.
I hope this helps!
Thank you for rating helpful posts!

How to configure Cisco Airespace in Cisco Secure ACS v5.3

Need some help regarding Cisco Airespace configuration in Cisco Secure ACS v5.3. We're migrating to ACS v5.3 but we're encountering an issue with
Cisco Airespace. It is only working on ACS4.1 but when we tried to move it to Cisco Secure ACS v5.3, it is not working.

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Airespace-WLAN-Id
Airespace-QoS-Level
Airespace-DSCP
Airespace-802.1p-Tag
Airespace-Interface-Name
Airespace-ACL-Name
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http://www.cisco.com/en/US/products/ps6366/products_configuration_example09186a0080891919.shtml

Cisco Secure ACS license question.

On the Cisco ACS server under the internal identity stores… is “users” and “host” counted against the "base server license" or “network device license”?

Guess you are running ACS 5.x
With the Base license, Cisco Secure ACS 5.3 appliances or software virtual machines can support deployments of up to 500 network devices (authentication, authorization, and accounting [AAA] clients). The number of network devices is based on how many unique IP addresses are configured. This is not a limit for each individual appliance or instance, but a deployment-wide limit that applies to a set of ACS instances (primary and secondary) that are configured for replication.
The optional Large Deployment add-on license allows a deployment to support more than 500 network devices. Only one Large Deployment license is required per deployment as it is shared by all instances.
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http://www.cisco.com/en/US/prod/collateral/netmgtsw/ps5698/ps6767/ps9911/product_bulletin_c25-689829.html
~BR
Jatin Katyal
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Manage a Cisco Secure ACS Solution Engine?

Hello,
how can i manage/observe a 'Cisco Secure ACS Solution Engine'? Ich found no things like SNMP etc.
regards
Karsten

Hi,
you have no chance to control the ACS SE with snmp. We have one router, access via ACS and uses a script roboter to control the access to the router. If the access fails, we send us an email
Bye Michael

Cisco Secure ACS 4.2 with Oracle

hi there...
Our campus using WisM (WS-SVC-WISM-1-K9) as wireless controller , Cisco 1130 access point and Cisco Secure ACS 4.2 Solution Engine 1113 Appliance as radius server. For username and password, ACS will export the data from Oracle database(production DB).
The problem that we are facing right now is password that store in oracle database is in encrypted format. Base feedback from our database administrator, the encryption is done by oracle - application layer and cannot be decrypt back. In Oracle they call it "Oracle Stored Procedures"
My questions :
1- Can Cisco Secure ACS 4.2 work with Oracle 10G or 11G?
2- Is there any option to tackle the encrypted password? Can ACS handle the "Oracle Stored Procedures" function?
Please advice.
Thanks

Microsoft SQL Server and Case-Sensitive Passwords
If you want your passwords to be case sensitive and are using Microsoft SQL Server as your ODBC-compliant relational database, configure your SQL Server to accommodate this feature. If your users are authenticating by using PPP via PAP or Telnet login, the password might not be case sensitive, depending on how you set the case-sensitivity option on the SQL Server. For example, an Oracle database will default to case sensitive, whereas Microsoft SQL Server defaults to case insensitive. However, in the case of CHAP/ARAP, the password is case sensitive if you configured the CHAP stored procedure.
For example, with Telnet or PAP authentication, the passwords cisco or CISCO or CiScO will all work if you configure the SQL Server to be case insensitive.
For CHAP/ARAP, the passwords cisco or CISCO or CiScO are not the same, regardless of whether the SQL Server is configured for case-sensitive passwords.
Sample Routine for Generating a PAP Authentication SQL Procedure
The following example routine creates a procedure named CSNTAuthUserPap in Microsoft SQL Server, the default procedure that ACS uses for PAP authentication. Table and column names that could vary for your database schema appear in variable text. For your convenience, the ACS product CD includes a stub routine for creating a procedure in SQL Server or Oracle. For more information about data type definitions, procedure parameters, and procedure results, see ODBC Database.
                         if exists (select * from sysobjects where id = object_id (`dbo.CSNTAuthUserPap') and
                         sysstat & 0xf = 4)drop procedure dbo.CSNTAuthUserPap
                         GO
                         CREATE PROCEDURE CSNTAuthUserPap
                         @username varchar(64), @pass varchar(255)
                         AS
                         SET NOCOUNT ON
                         IF EXISTS( SELECT username
                         FROM users
                         WHERE username = @username
                         AND csntpassword = @pass )
                         SELECT 0,csntgroup,csntacctinfo,"No Error"
                         FROM users
                         WHERE username = @username
                         ELSE
                         SELECT 3,0,"odbc","ODBC Authen Error"
                         GO
                         GRANT EXECUTE ON dbo.CSNTAuthUserPap TO ciscosecure
                         GO
Sample Routine for Generating an SQL CHAP Authentication Procedure
The following example routine creates in Microsoft SQL Server a procedure named CSNTExtractUserClearTextPw, the default procedure that ACS uses for CHAP/MS-CHAP/ARAP authentication. Table and column names that could vary for your database schema appear in variable text. For more information about data type definitions, procedure parameters, and procedure results, see ODBC Database.
                         if exists (select * from sysobjects where id = object_id(`dbo.CSNTExtractUserClearTextPw')
                         and sysstat & 0xf = 4) drop procedure dbo.CSNTExtractUserClearTextPw
                         GO
                         CREATE PROCEDURE CSNTExtractUserClearTextPw
                         @username varchar(64)
                         AS
                         SET NOCOUNT ON
                         IF EXISTS( SELECT username
                         FROM users
                         WHERE username = @username )
                         SELECT 0,csntgroup,csntacctinfo,"No Error",csntpassword
                         FROM users
                         WHERE username = @username
                         ELSE
                         SELECT 3,0,"odbc","ODBC Authen Error"
                         GO
                         GRANT EXECUTE ON dbo.CSNTExtractUserClearTextPw TO ciscosecure
                         GO
Sample Routine for Generating an EAP-TLS Authentication Procedure
The following example routine creates in Microsoft SQL Server a procedure named CSNTFindUser, the default procedure that ACS uses for EAP-TLS authentication. Table and column names that could vary for your database schema appear in variable text. For more information about data type definitions, procedure parameters, and procedure results, see ODBC Database.
                         if exists (select * from sysobjects where id = object_id(`dbo.CSNTFindUser') and
                         sysstat & 0xf = 4) drop procedure dbo.CSNTFindUser
                         GO
                         CREATE PROCEDURE CSNTFindUser
                         @username varchar(64)
                         AS
                         SET NOCOUNT ON
                         IF EXISTS( SELECT username
                         FROM users
                         WHERE username = @username )
                         SELECT 0,csntgroup,csntacctinfo,"No Error"
                         FROM users
                         WHERE username = @username
                         ELSE
                         SELECT 3,0,"odbc","ODBC Authen Error"
                         GO
                         GRANT EXECUTE ON dbo.CSNTFindUser TO ciscosecure
                         GO
Reference:
http://www.cisco.com/en/US/docs/net_mgmt/cisco_secure_access_control_server_for_windows/4.0/user/guide/d.html#wp355420

Features of Cisco Secure ACS Appliance

Hi,
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I’m working on an evaluation of NAC systems. Therefore, I’ve chosen the Cisco Secure ACS as representative of a 802.1X based solution.
There are a few questions I wasn’t able to answer by reading the product information available on Cisco.com. I hope that someone here might be able to help me. Any information is highly appreciated.
The questions I wasn’t able to answer are:
•     Can the ACS work in a heterogeneous environment (i.e. Cisco and Alcatel Switches)?
•     What happens if the server(s) fail?
            o     Can already authorized users still work?
            o     Can known users still be authorized?
            o     Are unknown users still blocked?
•     Is the ACS capable of authorizing users through routed networks or VPN tunnels?
•     Does a change of the assigned VLAN work without relogin (or even reboot) of the client?
•     Is there (besides of the reports) some kind of status overview with the ACS?
•     Which kinds of Attacks can the ACS (alone) prevent?
            o     Can it prevent MAC Spoofing?
            o     Can it prevent MAC Flooding?
            o     Can it prevent ARP Attacks?
            o     Can it prevent IP Spoofing?
            o     Can it eliminate rouge DHCP servers?
            o     Can it prevent STP Attacks
•     And the last one: What happens if I plug in an unknown device into an IP-Phone? Is the switchport to       which the IP-Phone is connected blocked or only the unknown device?
Thanks for all answers.
Regards,
taouri

See inline answers:
The questions I wasn’t able to answer are:
•     Can the ACS work in a heterogeneous environment (i.e. Cisco and Alcatel Switches)?
Yes, as long as those devices support RADIUS and TACACS+ IETF standards. Some devices require the configuration of vendor-specific AV-pairs to work properly, which the ACS in general can do. You'll need to get details from the specific vendor on their requirements to insure it'll work.
•     What happens if the server(s) fail?
            o     Can already authorized users still work?
This is driven by the AAA client, not the ACS. In general, if it isn't reauthenticating the users, then yes, they'll still work
            o     Can known users still be authorized?
In general, no, not by the ACS, but for some cases such as dot1x, it may be possible to configure fallback to local authentication or define a critical VLAN.
            o     Are unknown users still blocked?
Without contact to the server, the AAA client has no way of knowing what user is known / not known barring the above items.
•     Is the ACS capable of authorizing users through routed networks or VPN tunnels?
Yes, as long as the VPN device is capable of sending Radius or TACACS+ requests to the ACS
•     Does a change of the assigned VLAN work without relogin (or even reboot) of the client?
Yes, if using a supplicant that detects the EAP success message and knows to refresh the IP.
•     Is there (besides of the reports) some kind of status overview with the ACS?
Yes, this is covered in the documentation for the appropriate ACS solution. Incidentally, the word ACS could mean ACS 4.x, or ACS 5.x, both of which are substantially different.
•     Which kinds of Attacks can the ACS (alone) prevent?
ACS authenticates and authorizes users. It isn't in and of itself a device for prevention of the L2 attacks you list.
            o     Can it prevent MAC Spoofing?
            o     Can it prevent MAC Flooding?
            o     Can it prevent ARP Attacks?
            o     Can it prevent IP Spoofing?
            o     Can it eliminate rouge DHCP servers?
            o     Can it prevent STP Attacks
•     And the last one: What happens if I plug in an unknown device into an IP-Phone? Is the switchport to       which the IP-Phone is connected blocked or only the unknown device?
This depends on how you configure the dot1x parameters on the port. In general, this is often configured in single-host mode with a voice vlan for the phone. The phone passes through the EAPoL traffic the client passes, and in single host mode we rely on CDP bypass for the phone itself to bypass authentication. There are excellent documents for the various dot1x configuration options in our IBNS (identity-Based Network Solutions) section here:
http://www.cisco.com/en/US/customer/products/ps6638/products_ios_protocol_group_home.html

Setting privileges in Cisco Secure ACS Version 5.1.0.44

I am setting privileges in Cisco Secure ACS Version 5.1.0.44.
In the command sets from the ACS server, I denied few commands as can be seen in the attached screenshot and selected 'Permit any command that is not in the table below'.
I am unable to see some commands like "Show running-configuration" from the router I was testing. What changes should I do to see all the commands other than the denied commands. Your help will be rated. Thank you.

Hi,
The ACS is able to handle permit or deny commands.
I created a configuration example that will help you to understand command shell.(see attach doc)
Instead of using show running-config please use show config.
also make sure that all the users are using privilege 15.
Regards,

Upgrade path for Cisco Secure ACS 4.X Solution Engine 1113 Appliance.

Hello,
I am having Cisco Secure ACS 4.X Solution Engine 1113 Appliance, and is running on version Cisco Secure ACS Release 4.1(1) Build 23 and now want to upgarde it to the latest version. Need to know the upgrade path for the same. As per my information ACS 4.1(1) runs on windows server and releases post to 5.X uses Linux. Please guide how can i upgrade Appliance 1113 from 4.1 to 5.x

Hi,
Cisco ACS 1113 appliance doesn't support ACS 5.x version. 1113 appliance supports till ACS 4.2.1 version.
Cisco ACS SE 1120/1121 appliance models are required for ACS 5.x
The upgrade path for ACS 4.1 to 4.2.1 version can be found in the following link :
http://www.cisco.com/en/US/docs/net_mgmt/cisco_secure_access_control_server_for_solution_engine/4.2.1/Installation_Guide/solution_engine/upgap.html#wp1237189
Regards,
Karthik Chandran
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EAP-TLS witch Cisco Secure ACS

Hi everyone,
we have implemented wpa/leap in our WLAN. We would use certificates for machine authentication. There is a Cisco Secure ACS Server 3.3 installed.
Is it possible to use the ACS self generated certificate without a CA ?
The examples I found on the web describes only the configuration with CSACS with Microsoft CA.
http://www.cisco.com/en/US/products/sw/secursw/ps2086/products_user_guide_chapter09186a0080205a6b.html
We use Cisco AP1231/AP1232 with 12.3.4JA.
I think for machine authentication we have to install a CA. Let me know, how you think about that issue.
Armin

There are no much options on Client side: MS PEAP, EAP-TLS, EAP-MD5. ACS version 3.3 can generate self-signed certificate (for itself) without the need to install separate CA server. So I'd recommend you to use MS PEAP (PEAP MS-CHAPv2) with self-signed certificate on ACS.

Unauthorized device logging in via Cisco Secure ACS 3.2

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