Does cisco ACS hardware run TACACS+ ?

hi all
I am very new to the security,
my question is , does cisco ACS devices run TACACS+ ?
or TACACS+ has to be installed in windows/linux ?
thank you

The below listed link will help you to configure tacacs authentication/authorization and also help you to integrate ACS with Active directory.
ACS 5.x and later: Integration with Microsoft Active Directory Configuration Example
ACS 5.x: TACACS+ Authentication and Command Authorization based on AD group membership Configuration Example
Regards,
Jatin Katyal
*Do rate helpful posts*

Similar Messages

Cisco ACS 5.1 Tacacs with Juniper Srx 210

Hi all,
I am trying to do authentication for Juniper SRX 210 FW With Cisco ACS 5.1 Tacacs but I am unable to acheive it ..
Can any one help me how to add Junos service in ACS 5.1..How to Intergarte Juniper SRX 210 in Cisco ACS 5.1

Hello Pranav
As Nicolas said, you really need to know what attributes Juniper SRX is using. It also depends on what you're looking for, for example it's very different "password authentication" from "command authorization". I answered a similar question here https://supportforums.cisco.com/thread/2111466
You don't need to enable any new service. ACS is capable to attend any TACACS (or RADIUS) device as long as you tell ACS what are the TACACS (or RADIUS) attributes needed for that device.
This is an example in which I have configured ACS 5.x with an attribute called "local-user-name" which JunOS router use for authentication. For that you need to go to "Policy Elements > Authorization and Permissions > Device Administration > Shell Profiles".
If you don't know the attributes you can capture the packets and troubleshoot from Juniper cli and from "ACS view" side. That's how I find out the "local-user-name" attribute.
Please rate if it helps. Kind regards

Cisco ACS 4.2 TACACS+ Administration report - Help!

we had some switches mysteriously reloaded. Upon investigation, TACACS+ Administration report show no user login to the device, no command was issued, and the reason = reload.
how could this happen?

Guna,
Tacacs+ Does not use VSAs.
Radius uses VSAs.
This is what I found online:
http://198.152.212.23/css/P8/documents/100106731
See if this helps.
It has an example associated for server configuration.
In ACS 4, you need to use the shell exec and priv-lvl=<value>.
(Similar to Cisco IOS)
Regards
Ed

Juniper SSG and Cisco ACS v5.x Configuration

I searched for a long time unsuccessfully trying to find a resolution to my SSG320M and Cisco ACS v5.x TACACS dilemma. I finally got it working in my network, so I'm posting the resolution here in case anyone else is looking.
Configure the Juniper (CLI)
1. Add the Cisco ACS and TACACS+ configuration
     set auth-server CiscoACSv5 id 1
     set auth-server CiscoACSv5 server-name 192.168.1.100
     set auth-server CiscoACSv5 account-type admin
     set auth-server CiscoACSv5 type tacacs
     set auth-server CiscoACSv5 tacacs secret CiscoACSv5
     set auth-server CiscoACSv5 tacacs port 49
     set admin auth server CiscoACSv5
     set admin auth remote primary
     set admin auth remote root
     set admin privilege get-external
Configure the Cisco ACS v5.x (GUI)
1. Navigate to Policy Elements > Authorization and Permissions > Device Administration > Shell Profiles
        Create the Juniper Shell Profile.
        Click the [Create] button at the bottom of the page
                Select the General tab
                        Name:    Juniper
                        Description: Custom Attributes for Juniper SSG320M
                Select the Custom Attributes tab
                    Add the vsys attribute:
                        Attribute:                vsys
                        Requirement:       Manadatory
                        Value:                    root
                        Click the [Add^] button above the Attribute field
                    Add the privilege attribute:
                        Attribute:                privilege
                        Requirement:       Manadatory
                        Value:                    root
                                Note: you can also use 'read-write' but then local admin doesn't work correctly
                        Click the [Add^] button above the Attribute field
                Click the [Submit] button at the bottom of the page
2. Navigate to Access Policies > Access Services > Default Device Admin > Authorization
        Create the Juniper Authorization Policy and filter by Device IP Address.
        Click the [Customize] button at the bottom Right of the page
                Under Customize Conditions, select Device IP Address from the left window
                        Click the [>] button to add it
                Click the [OK] button to close the window
                Click the [Create] button at the bottom of the page to create a new rule
                        Under General, name the new rule Juniper, and ensure it is Enabled
                        Under Conditions, check the box next to Device IP Address
                                Enter the ip address of the Juniper (192.168.1.100)
                        Under Results, click the [Select] button next to the Shell Profile field
                                Select 'Juniper' and click the [OK] button
                        Under Results, click the [Select] button below the Command Sets (if used) field
                                Select 'Permit All' and ensure all other boxes are UNCHECKED
                        Click the [OK] button to close the window
                Click the [OK] button at the bottom of the page to close the window
                Check the box next to the Juniper policy, then move the policy to the top of the list
                Click the [Save Changes] button at the bottom of the page
3. Login to the Juniper CLI and GUI, and attempt to change something to verify privilege level.

Cisco Prime LMS is not designed to manage appliances like the ACS. ACS is not on the LMS supported device list and I would doubt that it would be as LMS's functions are mostly not applicable to the appliance or software running on it.
You can use ACS as an authentication source for LMS, but authorization is still role-based according to the local accounts on the LMS server.

Supported devices/users on Cisco ACS 4.2

Hi,
Does anyone know how many devices/users does Cisco ACS 4.2 support ?
I need to know this information for a very large deployment.
Regards,

Hello,
The following items are general answers to common system-performance questions. The performance of ACS in your network depends on your specific environment and AAA requirements.
•Maximum users supported by the ACS internal database—There is no theoretical limit to the number of users the ACS internal database can support. We have successfully tested ACS with databases in excess of 100,000 users. The practical limit for a single ACS authenticating against all its databases, internal and external, is 300,000 to 500,000 users. This number increases significantly if the authentication load is spread across a number of replicated ACS instances.
•Transactions per second—Authentication and authorization transactions per second depend on many factors, most of which are external to ACS. For example, high network latency in communication with an external user database lowers the number of transactions per second that ACS can achieve.
•Maximum number of AAA clients supported— ACS has been tested to support AAA services for approximately 50,000 AAA client configurations. This limitation is primarily a limitation of the ACS memory.
System Performance Specification.
http://www.cisco.com/en/US/docs/net_mgmt/cisco_secure_access_control_server_for_windows/4.2/user/guide/Overvw.html#wp827669
~BR
Jatin Katyal
**Do rate helpful posts**

Migrating from Linux based Tacacs+ server to Cisco ACS 1113 appliance

I'm trying to migrate my configuration from a Linux based Tacacs+ server to the Cisco ACS 1113 appliance. Does anyone have any recommendations.
Thanks.

Hi
We (extraxi) offer migration and general consultancy for ACS if you need professional help.
www.extraxi.com/contact.htm

Cisco ACS (TACACS+) - AAA failure on WLC

Setting up TACACS+ between Cisco ACS and 4402 WLC using the below configuration guide.
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a0080851f7c.shtml#add-authorizserv
Authenication is failing on the WLC. Currently getting the below error message on the Cisco ACS server (Reports and activity > failed attempts)
Message Type: Author Failed
Author-Failure-Code: Service denied
Author-Data: service=ciscowlc protocol=common
Anybody have any idea to resolve this problem.
Thanks,
Colm

Hi,
The document you referred is correct.
What version of WLC are you running?
Check this one:
CSCsk21007 WLC requires tacacs authentication when configuration change ccess Control
HTH
Regards,
JK
Plz rate helpful posts-

Configure Nexus 7k for TACACS in Cisco ACS

Hi,
Please advise on how to configure Cisco Nexus 7k for TACACS to authenticate in Cisco ACS. Our Cisco ACS is getting users from the Active
Directory.
Please advise if the below config are acceptable:
feature tacacs+
tacacs-server key KEY
tacacs-server timeout 20
tacacs-server host 1.1.1.1 key KEY
aaa group server tacacs+ TEST
    server 1.1.1.1
    use-vrf management
    source-interface mgmt0
tacacs-server directed-request
aaa authentication login default group TEST
aaa authentication login console none
aaa authorization commands default group TEST
aaa accounting default group TEST
aaa authentication login error-enable

Hi,
What OS version are u using on your servers?
Craig

Cisco ACS Server Tacacs Based on LDAP AND Source IP Possible???

Hi All,
I have used Cisco ACS tacacs for authentication based on Active Directory. Is it possible to use Active Directory as a criteria for authentication AND source IP?
For example, if someone wants to log in to a certain device... they must have correct credentials AND their IP must be sourcing from the acceptable subnet range.
Thanks!

I see your point. This will depend if the user's IP is provided in the authentication request, if this information is provided then you can use the feature called "End Station Filter". This feature is used as a Condition in the Access Policy to deny or allow access. Below are the steps:
1. Create a End Station Filter, here configure the user's IP
2. Customize your Conditions under Access Policies/Authorization to use End Station Filter
3. Define your rule with the required result

Configuring Cisco ACS 5.1 with Juniper Netscreen Firewall wit Radius & Tacacs+

Hello,
Can anybody tell me the step-by-step configuration of Cisco ACS 5.1, to configured it with Juniper Netscreen Firewall for radius & tacacs+ authentication and authorization?
I am able to configure this with Cisco ACS 4.2 with customise VSA file but can't understand how to configure it on ACS 5.1.
Thanks in Advance.

Hi Eduardo,
Can you tell me how to map ACS 4.2?
service=junos-exec
local-user-name=Engineering
Into the new "shell profiles" on ACS 5.2? How do I verify these attributes are passed onto ACS 5.2? I don't have access to a sniffer or tap nor do I have writes on this box. I have to instruct our systems folks to investigate. It has been a back and forth battle.
Also, I'd like to see where I'd map this on ACS 5.2. Keep in mind in both cases I have a JUNOS config mapping to a login user Engineer and operations respectively.
local-user-name=opertions
allow-commands=((^ping *)|(^mtrace *)|(^traceroute *)|(^monitor *))
deny-commands= ((^start *)|(^file delete *)|(^file rename *)|(^request *)|(^set cli restart-on-upgrade *)|(^set cli prompt *)|(^set chassis *)|(^set date *)|(^test *)|(^clear *)|(^op *))

Can ACS run TACACS+ adn RADIUS concurrently?

I know that ACS supports both TACACS+ and RADIUS protocols. My question is can ACS run TACACS+ and RADIUS concurrently?

Once you go into Network Configuration, you enter the Network Device Group you want to add the device to. Select the option to add a client device and input the information, but enter a different client hostname, with the same IP Address in each seperate Network Device Configuration. You can specify which Network Device Group for the client to use, and in the specific group is where you will specify which resources the client members will be able to access. I specified a few different groups with different access restricitions, because I didn't want the Dial -In or Wireless people to have Admin Access to my TACACS+ configured devices...
Let me know if this helps...

How to hide line console parameters through Cisco ACS

Hi,
Can any one of you please help me in the following scenario ?
I want to hide the line console, line aux and line vty configuration parameters of the cisco devices based on user level privillages through Cisco ACS. For example, if a user logs into the devices with privilege level 7, then he should not be able to see the line paramenters on the cisco devices for which he had privilege level 7 access.
Can you please help me out how to achieve this?? Your help in this regard is highly appriciated.
Thanks

This thing is possible with local authorization on IOS device. With ACS this is not possible.
In acs you can set what all commands a specific user can issue. That feature is called command authorization.
For show run you need to give priv 15. ACS works in a different way if you compare it with setting up local priv lvls on router/switch.
Best way to set it up is to give all user priv lvl 15 and then define what all commands user can execute.
Note : Having priv 15 does not mean that user will able to issue all commands.
We will set up command authorization on acs to have control on users.
This is how your config should look,
aaa authentication login default group tacacs+ local
aaa authorization exec default group tacacs+ if-authenticated
aaa authorization commands 1 default group tacacs+ if-authenticated
aaa authorization commands 15 default group tacacs+ if-authenticated
aaa authorization config-commands
aaa accounting commands 1 default start-stop group tacacs+
aaa accounting commands 15 default start-stop group tacacs+
http://www.cisco.com/en/US/products/sw/secursw/ps2086/products_configuration_example09186a00808d9138.shtml
Regards,
~JG
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VPN client and Cisco ACS

hi,
I'm trying to setup a VPN solution, connecting to a 800 series router and authenticating off a Cisco ACS tacacs server.
I've basically followed the suggested config at http://www.cisco.com/en/US/customer/tech/tk59/technologies_configuration_example09186a00800a393b.shtml and the setup works fine if I use local authentication, but as soon as I switch to using TACACS the client authentication fails.
Debugging tacacs on the router i can see the requests being sent to the server, and the replies coming back - the login detail are definitely correct so I'm guessing that TACACS isn't authorising me to use VPN or IPSEC or something. But there is nothing in the ACS logs to suggest why I'm not getting through - no failed attempts are shown.
Any ideas?

here is some debug from the router:
Feb 24 12:28:58.973 UTC: TPLUS: processing authentication start request id 129
Feb 24 12:28:58.973 UTC: TPLUS: Authentication start packet created for 129(vpngroup)
Feb 24 12:28:58.973 UTC: TPLUS: Using server 10.10.10.10
Feb 24 12:28:58.973 UTC: TPLUS(00000081)/0/NB_WAIT/823A9F04: Started 5 sec timeout
Feb 24 12:28:58.989 UTC: TPLUS(00000081)/0/NB_WAIT: socket event 2
Feb 24 12:28:58.989 UTC: T+: Version 192 (0xC0), type 1, seq 1, encryption 1
Feb 24 12:28:58.989 UTC: T+: session_id 1729330768 (0x67137E50), dlen 16 (0x10)
Feb 24 12:28:58.989 UTC: T+: type:AUTHEN/START, priv_lvl:1 action:LOGIN ascii
Feb 24 12:28:58.989 UTC: T+: svc:LOGIN user_len:8 port_len:0 (0x0) raddr_len:0 (0x0) data_len:0
Feb 24 12:28:58.989 UTC: T+: user: vpntest
Feb 24 12:28:58.989 UTC: T+: port:
Feb 24 12:28:58.989 UTC: T+: rem_addr:
Feb 24 12:28:58.989 UTC: T+: data:
Feb 24 12:28:58.989 UTC: T+: End Packet
Feb 24 12:28:58.989 UTC: TPLUS(00000081)/0/NB_WAIT: wrote entire 28 bytes request
Feb 24 12:28:58.993 UTC: TPLUS(00000081)/0/READ: socket event 1
Feb 24 12:28:58.993 UTC: TPLUS(00000081)/0/READ: Would block while reading
Feb 24 12:28:59.009 UTC: TPLUS(00000081)/0/READ: socket event 1
Feb 24 12:28:59.009 UTC: TPLUS(00000081)/0/READ: read entire 12 header bytes (expect 16 bytes data)
Feb 24 12:28:59.009 UTC: TPLUS(00000081)/0/READ: socket event 1
Feb 24 12:28:59.009 UTC: TPLUS(00000081)/0/READ: read entire 28 bytes response
Feb 24 12:28:59.009 UTC: T+: Version 192 (0xC0), type 1, seq 2, encryption 1
Feb 24 12:28:59.009 UTC: T+: session_id 1729330768 (0x67137E50), dlen 16 (0x10)
Feb 24 12:28:59.009 UTC: T+: AUTHEN/REPLY status:5 flags:0x1 msg_len:10, data_len:0
Feb 24 12:28:59.009 UTC: T+: msg: Password:
Feb 24 12:28:59.009 UTC: T+: data:
Feb 24 12:28:59.009 UTC: T+: End Packet
s9990-cr#
Feb 24 12:28:59.009 UTC: TPLUS(00000081)/0/823A9F04: Processing the reply packet
Feb 24 12:28:59.009 UTC: TPLUS: Received authen response status GET_PASSWORD (8)
"AUTHEN/REPLY status:5" is a permanent fail according to the TACACS RFC
In the VPN Client log it say "User does not provide any authentication data"
So to summarise:
-Same ACS server\router\username combination works fine for telnet access.
-VPN works fine with local authentication.
-No login failures showing in the ACS logs.

Using Cisco ACS for Solaris login authentication

Hi all
I am planning to authenticate ssh logins to Solaris 8/9 systems using PAM and radius (while radius is considered the primary solution, tacacs+ could be used, too). The radius/tacacs+ server is provided by a Cisco ACS.
Can anybody out there confirm that the combination "Solaris & PAM & radius/tacacs+ & Cisco ACS" is correctly doing this authentication stuff? Is there anything to specially consider?
Thanks, David

Hard to comment with any certainty but provided the client implementation of RADIUS is sound AND the authentication protocol is one that ACS supports, eg PAP, CHAP, MSCHAP, LEAP, EAP (PEAP/FAST/TLS/GTC/MSCHAP) then should be fine.

[Cisco ACS 5.2] Windows XP - EAP-TLS error

Hi,
We used RADIATOR with Cisco WLC and Cisco AP in our WiFi architecture.
We just replaced RADIATOR with Cisco ACS 5.2 .
Few computers with Windows XP SP3 have this error : 11514 Unexpectedly received empty TLS message; treating as a rejection by the client
Description:
While trying to negotiate a TLS handshake with the client, ACS expected to receive a non-empty TLS message or TLS alert message, but instead received an empty TLS message. This could be due to an inconformity in the implementation of the protocol between ACS and the supplicant. For example, it is a known issue that the XP supplicant sends an empty TLS message instead of a non-empty TLS alert message. It might also involve the supplicant not trusting the ACS server certificate for some reason. ACS treated the unexpected message as a sign that the client rejected the tunnel establishment.
Resolution Steps :
Ensure that the client's supplicant does not have any known compatibility issues and that it is properly configured. Also ensure that the ACS server certificate is trusted by the client, by configuring the supplicant with the CA certificate that signed the ACS server certificate. It is strongly recommended to not disable the server certificate validation on the client!
Most of the computers (hundreds of Windows XP and Windows 7) got no problem.
ACS says "it is a known issue that the XP supplicant sends an empty TLS message instead of a non-empty TLS alert message".
If it was a known issue, we would have this error for other computer but we don't have (fortunately )
Wireless profile is sent to computers using GPO so they trust ACS server certificate...
Do you know how to correct this issue on XP supplicant? I dont find this issue on Google
Thanks for your help,
Patrick

Patrick,
One way to troubleshoot is to physically have one of the laptops and see if unchecking the box that validates the server certificate fixes the issue. I have seen the same issue as you are seeing before and I would like for you to verfiy that.
If that doesnt fix the issue then we will have to proceed to taking a wireshark of the client and running a few debugs on the ACS.
Thanks,
Tarik Admani

Does cisco ACS hardware run TACACS+ ?

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