Cisco AAA/Identity/Nac :: 5510 - How To Enable Password When Using Tacacs+
Jul 10, 2012
I have been experimenting with acs 4.2 and a cisco asa 5510. I have managed to authenticate the ASA users with my tacacs server. The user "test" is authenticated with the tacacs server, and can log in. But the enable password is wrong, because i dont know where to place it in the tacacs server.
Now my question is, where do i set my enable password when authenticatig with tacacs+. And for this i mean in the acs 4.2, i know how to do it on the asa.
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Jul 26, 2012
I am trying to migrate an ACS 4.1.1(24) using the migraton tool to ACS 5.2. The tool is working OK. It migrates the users, groups, NDG, etc. and the reports are showing no errors.
The problem is with the Enable password of the users. The users in the ACS 4 have the TACACS+ Enable Password configured, but after the migration it appears empty in the ACS 5.
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Jan 24, 2013
how do I setup an enable password for an ASA 5510? At the moment its setup to authenticate using RADIUS (which I'd like to keep doing) but I need to setup an enable mode password.
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Nov 5, 2011
provide a sample configuration to use Cisco Secure ACS 4.2 to enable command authorization using TACACS.
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Dec 5, 2012
I successfully authenticate through ACS to my Identity Store, but only get dropped into a non-enable prompt: ciscoasa> How can I get an Authenticated user directly into enable mode?
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Sep 4, 2012
I just came across a requirement, of implementing different password policies for different group users.
I can see in >>>>SYSTEM CONFIGURATION>>>>User>>AUTHENTICATION SETTINGS has only global option to implement the password complexity/no of days for active user. But i need this feature to be based for per user/group
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Jan 28, 2013
How to configure authentication of enable password using acs 5.3. I have installed acs 5.3 and created user and gave relevant passwords. Following config is done on router
aaa new-model
aaa authentication login default group tacacs+ local
aaa authen enable default group tacacs+ enable
tacacs-server host x.x.x.x key xxxxx
Now when I telnet router, i can authenticate username/pass with acs5.3 but when i try to enter enable command and give password, it gives me error in authentication. What is the process of configuring enable passwords?
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Dec 21, 2012
I have migrated my ACS data from 4.1 to 5.1 and everything is working fine to test the connection I have configured a switch to get the authentication from the new Tacacs server, using my old username and password..i got in perfectly but when the switch asked my for enable which is the same password, it refused the password.(I have unchecked the <use a different password for enable> option) I deleted my switch from the Tacacs to enter locally, I went in with no problems..i thought that the problem may be from the old configuration.so I created a new username and password to check, and the problem still exist.
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Dec 29, 2011
Changed my AD password and now i cannot get into the enable side of the cisco switches on our network (we have no routers).Looking on the logs for the ACS v4.2 I can see the following -
On TACACS+ Accounting you can see the connections which have worked - it the initial tty connections -
When i look in the failed attempts i see the following Auth failed - External DB user invalid or bad password or on another occasion internal error or EAP-TLS or PEAP authentication failed due to unknown CAcertificate during SSL handshake.
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Jun 23, 2011
Recently I came across a router (Cisco 3845, IOS 12.4) configured for TACACS, one local username and an enable password. Going through the configuration I noticed the router didn't have an enable secret password which I thought was strange. The TACACS config is below, comments regarding the TACACS config and the consequences of not having an enable secret or if there is a need for one.
aaa authentication login default group tacacs+ aaa authentication login no_tacacs enable aaa authorization exec default group tacacs+ aaa authorization commands 1 default group tacacs+ aaa authorization commands 15 default group tacacs+ aaa accounting exec default start-stop group tacacs+ aaa accounting commands 1 default start-stop group tacacs+ aaa accounting commands 15 default start-stop group tacacs+ aaa accounting network default start-stop group tacacs+
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Aug 8, 2012
the following information before:
Switch: WS-C3750X-48P (Stack with 2 Members)
IOS: 12.2(58)SE2
Lic: IPBASEK9
[Code]....
Since i added another Member to the Stack, i'm facing the following problem: When i login with my tacacs user account, i will not be asked for the password. The same thing is for the tacacs account of my colleague, after entering the username he is logged in. It seems for me, that the passwords are cached only for this Switch.
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Feb 12, 2013
We have CISCO ASR 1002 router on our DC, I want to enable TACACS on this router.what is the usage of key, we need a separate key for every device? or. [code]
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Feb 28, 2012
I have a weird issue. I recently setup an ASA 5510 and had SSH working. To make it easier on my VPN users I then decided I wanted to setup a Windows 2008 Network Policy Server for RADIUS authentication. Ever since I added the RADIUS part to aaa authentication, when I use SSH to connect to the ASA it will not take the local user name and password I have setup. I can however get in using a Domain user name and password. Below is the SSH and AAA configuration. Am I missing something here? The username and password in the ASA is not on the domain and it's like the ASA is not even trying LOCAL when it tries to authenticate. I want it to use the local username and password if possible. I'm kind of new to ASA's..
On another note, I have never been able to SSH in on the internal interface. I always get a "The remote system refused the connection" error message. I can only use the outside interface.
Site-ASA# sh run | in ssh
aaa authentication ssh console SERVER_RADIUS LOCAL
ssh 0.0.0.0 0.0.0.0 outside
ssh 0.0.0.0 0.0.0.0 inside
ssh timeout 60
[code]....
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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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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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Sep 13, 2011
I tried to configure TACACS+ authentication / authorization for NCS via ACS 4.2. For that I followed the configuration guide:
1. Configured the service for NCS with HTTP (see attachment)
2. Added the tasks to the user (see attachment)
When I try to login on the NCS it fails, in the logs on the NCS I see the following lines:
09/14/11 16:53:03.333 TRACE [system] [http-443-7] [TACACS+ AAAModule] Creating authorization socket - To Server: 192.168.49.14 - For User: netadmin
09/14/11 16:53:03.335 TRACE [system] [http-443-7] [TACACS+ AAAModule] Sending authorization request packet - To Server: 192.168.49.14 - For User: netadmin
09/14/11 16:53:03.336 TRACE [system] [http-443-7] [TACACS+ AAAModule] Receiving authorization response packet - From Server: 192.168.49.14 - For User: netadmin
[code].....
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Feb 27, 2011
I found that TACACS should be available for network access with ACS 5.2:(url) But when I'm trying to create Rule tu allow PPP authentication against TACACS server I get error.
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Sep 20, 2011
I am running ACS 4.1.1.23 on a Microsoft server and I am trying to get TACACS to work with two Linux servers. The servers are capable of TACACS, are using port 49 and have the correct shared secret. I believe I do not have the devices configured properly on the ACS side. These 2 servers currently are using RADIUS and we are getting bit by the bug where the ACS application will start rejecting RADIUS authentication requests but still accept TACACS requests.
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May 14, 2013
I am setting up reports for tacacs accounting on ACS 5.3. However, accounting only seems to work after entering enable mode on the switch. I would like to see all commands, even the enable command when in privlage 1 mode.
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Mar 4, 2012
I can get it to authenticate. But I've read some posts on ACS 4.2 and authorization, but I don't find anything similar.I want to control down to what commands the authenticated user can run. I want the defintion to come from the ACS server, or at least control it from the ACS server. I want to minimize the changes on the JunOS side,but if it can't be easily done, I'll change the JunOS side.
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Nov 14, 2012
ACS 5.3 configured with two rules, 1 rule for standard level 15 access for the Network Engineers and a 2nd rule to allow some limited access to switches: The limited access account has enough command set access to change the vlan on a switchport, so Configure Terminal, Interface FAx/x and switchport access vlan x.
Switch configuration:
aaa authentication login default group tacacs+ local
aaa authentication enable default group tacacs+ enable
aaa authorization console
aaa authorization config-commands
aaa authorization exec default group tacacs+ local
aaa authorization commands 0 default group tacacs+ local
aaa authorization commands 1 default group tacacs+ local
aaa authorization commands 15 default group tacacs+ local
aaa session-id common
Everything works well and the limited access users can only perform the commands i've setup.
Problem:The problem i've encountered is when one of the network engineers makes a change that would stop the device from being able to see the ACS server it stops allowing any commands to be typed in the router/switch. Additionally if you then connect to the device and login with the local username and password the device then waits for it to hit the TACACS server timeout for every command you enter. This is obviously very slow and painful for the engineer.
Question:Is there a way to set this up so the engineer logging in with full Level 15 access doesn't have to have each command authorized by the ACS server but still allow the limited access accounts to be able to make interface changes?
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Aug 14, 2011
So far i managed my switches with TACACS+, however now i've to deploy 802.1X, requiring RADIUS only. For what i know, ACS (i'm using 4.2) allows to define a device using only TACACS or RADIUS, but not both. Do i am right? Or there is a way to define an AAA client to communicate with the same ACS using both the protocols?
Supposing i am right, i was then considering the following options: - configure all of the switches to use radius for any service (authentication, authorization etc ec) This simplifies the task, but i lose the TACACS+ services for the switches. Is this a big loss?
- configure the L3 switches to use a second Loopback, just for RADIUS services. This would allow to still use the TACACS+ but would require a new network just for the RADIUS service; furthermore L2 switches doesn't support two IP addresses and would require anyway a migration to RADIUS.
A considerable administrative overhead, in other words. I'm not willing to deploy a second RADIUS (ACS, Windows, whatever), in this moment.
The key point is this: reading around i see Cisco documentation recommending always to use TACACS+ for management, but in this situation is not possibile. In general, every time the device has a role of network admission (switch or access-point) RADIUS seems to be the protocol of choice. Moving to RADIUS would have some major drawback or only a change in the communication protocol? (I know the difference between TACACS+ and RADIUS: tcp vs udp, encryption of the whole packet vs encryption of only the password).
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May 1, 2013
I want to setup two factor authentication via ACS 5.2 TACACS+ without having to use a token (such as that by RSA). Is there a way to do it?
More info:
Users from unconnected AD domains will be connecting to the routers and switches.There is a certificate server available to generate certificates.SSHv2 is the current login protocol.
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Jan 15, 2012
Noticed tacacs authorization logs when you change password for a user ?? in authorization logs I can see the new password but same I can not see in accounting logs ? is it a normal behaviour ?? or do we need to do something to hide the password in authorization logs ?
For example if i type command username xyz priv 15 secret cisco 123
I see this command in accounting logs as uername xyz oriv 15 secret *** where as in tacacs authorization logs it shows username xyz priv 15 secret cisco 123
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May 14, 2013
I am trying to access an ASA 5545 using TACACS+. I have the ASA configured as follows:
aaa-server tacacs+ protocol tacacs+
aaa-server tacacs+ (inside) host 10.x.x.x
[code]....
I have added the ASA in ACS with the correct IP and the correct key. When I try to test the authentication via test aaa-server authentication tacacs+ host 10.x.x.x username Cisco password Cisco, I get:
ERROR: Authentication Server not responding: No error.
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Mar 8, 2012
I have several 2950 switches that I cannot get to work with TACACS. I'm using the same config for these that I am using for other cisco switches. [code]
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Aug 6, 2012
I have ACS 5.2 and JUNOS 10.6.x I setup 2 classes eng-class and ops-class with read/write and read-only permission here is my configuration on JUNOS
set system login class eng-class idle-timeout 15
set system login class eng-class permissions all
set system login user engineer full-name “Regional-Engineering”
set system login user engineer uid 2001
set system login user engineer class eng-class
set system login user engineer authentication plain-text-password xxxxxxx
[code]....
I have 2 separate Authorization policies for engineer and operator group.Result,
1. engineering group is working fine.
2. the operator group its not working im unable to login to device under this group "authentication failed" but on the ACS logs its successfully authenticated.
3. Web authentication is not also working for bot group.
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Jul 11, 2011
IS there a way to stop the Radius/Tacacs service in ACS 5.2 from the GUI ?
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Jun 27, 2012
we have a ACS server V4 installed on W2003 server ,when we make a telnet to an equipement on the wan the authentication pass on the first connexion ,but when we telent to a switch on the lan the first connxion fails and we need to retry to login .when i check the field attempt log on the ACS i dont find the field attempt.i find this issue in ALL switch on the LAN ,from the switch i can ping the the ACS server .this problem appear frequently?
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Aug 30, 2011
I've set up my 5540 ASA to accounting commands on TACACS+.Every moviment done through ASDM is logged on TACACS+ by this form: cmd=perfmon interval 10.What does that mean?Why doesn't it record the exaclty command I'd issued?
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Sep 30, 2012
After implementing TACACS, one of our routers takes about 8 seconds to response to any CLI command. We have no problems with other devices in the same location with the same AAA configuration. The router is talking to the ACS server (ACS 5.3) and the logs on the ACS server look normal for the router as well.
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Dec 20, 2009
Having an issue with authenticating Juniper J Series and SRX devices with ACS 5.1 The devices can authenticate using TACACS to ACS 5.1 via the CLI (telnet / ssh connections) but cannot using the JWEB management page.Doing packet captures between the Juniper devices and the ACS 5.1 box shows the Authenticate phase passing, but it does not progress onto the Authorisation phase. There is nothing of interest in the ACS Logs (Even with the debugging levels turned right up) The same Access service is in use for both the CLI and GUI (JWEB).Using ACS 4.1, both CLI and JWEB authentication works.[URL]I'm thinking the issue is with ACS 5.0 / 5.1 and it maybe not liking the response from the Juniper (even though it should be the same mechanism)
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Feb 2, 2013
I am trying to configure ACS 5.2 to do all authentication against Microsoft AD, but use local identity groups to determine TACACS+ authorization.
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