ACS Tacacs+ aaa authorization commands

Hi,
I would like to authorize only certain configuration commands by the Tacacs Server, so in the group setup of ACS, I have checked : command, I have written in the field : configure, and declared as arguments : permit terminal and permit snmp-server enable traps. But I can not configure snmp until I declare in the router : privilege config level 7 snmp-server enable. (I use a level 7 user)
My question is : is there a way to control the granularity of configuration commands on the ACS, in the same way as you can control the granularity of the show commands ?
Many thanks
Patrice

Yes, you can get very granular using Command Authorization Sets and they can be applied to individual users or groups.
Setting Up and Managing Shared Profile Components
http://www.cisco.com/en/US/products/sw/secursw/ps2086/products_user_guide_chapter09186a00800d9e6b.html
hth

Similar Messages

AAA authorization commands

Hi All
Probably i am going to ask a stupid question but i am really confused regarding the purpose of "aaa authorization commands x default local" command. I understand that if this command is configured, it authorizes each and every command of that level but in my experience, this command is not doing anything. The outcome is same whether it is configured or not.
Following is my aaa part config
username cisco privilege 15 secret cisco
aaa new-model
aaa authentication login default local enable
aaa authorization exec default local if-authenticated
aaa authorization commands 15 default local if-authenticated
Now whether i keep the last command or remove it, username "cisco" is able to use every level 15 command so my question is, why i bother configuring this command?
Would really appreciate your quick reply
Regards

Thanx a lot for your quick response. Really appreciate that.
So does this mean, can i safely assume that if i am using local database then i don't require "aaa authorization command level" command??
that is following should be the config
username cisco privilege 15 secret cisco
aaa new-model
aaa authentication login default local enable
aaa authorization exec default local if-authenticated
privilege exec level 15 show (just an example)
privilege exec level 15 debug
I have tested this and it worked fine without using "aaa authorization command level"
Moreover, regarding the use of AAA server, my eventual plan is to use TACACS+ but before that, i wanted to get a good grip of AAA functionality and therefore started off with local user database.
So u mean to say, if i am using TACACS+ for authentication and authorization purposes and in ACS Server, user "cisco" has been assigned level 15 but with authorization set of "show" and "debug" only then by using "aaa authorization commands level" in a router, i can successfully restrict user "cisco" to "debug" and "show" only? In my point of view, i can achieve this anyway (restricting "cisco" user to only use "show and debug) without using "aaa authorization command level" (like i tested with local database)??
will really appreciate your kind response

Exclude specific user from aaa authorization commands

Hi there,
I am trying to find a solution to exclude specific users from being authorized (AAA command authorization) when entering commands on the switch/router.
We use an AAA setup with Cisco ACS. On the devices we use:
aaa authorization config-commands
aaa authorization commands 1 default group tacacs+ local
aaa authorization commands 5 default group tacacs+ local
aaa authorization commands 15 default group tacacs+ local
is it possible, to exclude an user, say User1, from being command authorized?
In other words, when User1 logs on the switch/router, the switch/router shouldn't check the ACS if User1 is authorized to use this command.
We tried this with method lists in combination with ACL's on the VTY's:
line VTY 0
access-class 1 in
line VTY 1
access-class 2 in
Let's say, User1 always logs in from a specific IP, which is mentioned in access-list 2, the switch would use the method mentioned within the line vty 1.
But apparently, when a remote connection is being established, the switch/router uses the first VTY which is available, instead of watching which ACL can be matched to the source IP from the User.
Does anyone have some tips/tricks how to handle this?
Maybe a custom attribute from the ACS?
Kind Regards

If that user belongs to a unique group then you can write a policy where "if the user is in group x then return "access_reject" Or return "access_accept" but set the privilege level to "1" and block all commands.
Thank you for rating helpful posts!

Aaa authorization command

Hi!
I have issued the aaa authorization command tacacs on my asa, but the ACS is not letting me do any command now. I'm trying to issue the no
aaa authorization command tacacs, but it does not let me.
How can i rollback??
Please Help me
Tkx
Miguel

What version of ACS are you running?
If you are running acs 4.x then you will have to go to your group settings and under shell command authorization permit all commands, if you are using acs 5, you will have to go to your authorization policy, click customize if the command set column isnt active already and assign the command set to allow all commands. I think by default there should be a permit all.
Thanks,
Tarik

Aaa authorization commands for pix 535

Hi ,
Can you provide aaa authorization commands for pix 535
Sanjay Nalawade.

Hi,
Please find the AAA config for PIX.
aaa-server TACACS+ protocol tacacs+
max-failed-attempts 5
aaa-server TACACS+ (ExranetFW-In) host
timeout 5
key ********
aaa authentication enable console TACACS+ LOCAL
aaa authentication serial console TACACS+ LOCAL
aaa authentication http console TACACS+ LOCAL
aaa authentication ssh console TACACS+ LOCAL
aaa authorization command LOCAL
aaa accounting command privilege 15 TACACS+
aaa authorization exec authentication-server
Karuppuchamy

No "list-name" option availbale for aaa authorization command.

I have a 1721 router running 122-15.T14 and want to implement authorization but the router does not provide command option for list name.
I want to implement the following command:
"aaa authorization network groupauthor group radius"
but the only option is default after "network".
Router#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C1700 Software (C1700-K9SY7-M), Version 12.2(15)T14, RELEASE SOFTWARE (fc4)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Fri 27-Aug-04 23:26 by cmong
Image text-base: 0x80008120, data-base: 0x80F731A0
ROM: System Bootstrap, Version 12.2(7r)XM2, RELEASE SOFTWARE (fc1)
ROM: C1700 Software (C1700-K9SY7-M), Version 12.2(15)T14, RELEASE SOFTWARE (fc4)
Router uptime is 5 minutes
System returned to ROM by reload
System image file is "flash:c1700-k9sy7-mz.122-15.T14.bin"
cisco 1721 (MPC860P) processor (revision 0x400) with 56844K/8692K bytes of memory.
Processor board ID FOC08302CF6 (610086355), with hardware revision 0000
MPC860P processor: part number 5, mask 2
Bridging software.
X.25 software, Version 3.0.0.
1 FastEthernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
32K bytes of non-volatile configuration memory.
32768K bytes of processor board System flash (Read/Write)
Configuration register is 0x2102
Router(config)#aaa authorization network ?
default The default authorization list.
Router(config)#aaa authorization network

I think that your issue is version related. I have a customer who is running a bunch of 1721 routers and when I do aaa authorization network ?
I get both default and the option to name a list.
I checked with the Software Advisor on CCO and it looks to me like the named-list feature was added in 12.3. As long as you are running 12.2 I do not think you will have the option for a named-list for network authorization.
HTH
Rick

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-

Specific shell command authorization - ACS/TACACS+ on 2900XL

Hello all -
I've been struggling with one particular issue here. I'm running ACS 3.2, and trying to set up secure access to my switches. I have "grad students" from my university that I want to allow to perform specific functions, i.e. change a port's vlan, and write to memory, etc.
I successfully set up the authorization piece, and my test account can log in. I successfully assign a privilege level of 7 also, which gives me basic look rights by default. Accounting is also working, showing the connections and commands I enter.
What I want to do is use ACS to enable a specific group of commands, so I can change them if needed in one place (ACS) and not have to touch 400+ devices. ACS says it can do it, but it doesn't seem to work. I created a Shell Command Group and specififed the commands, no luck. Even if I modify the "Unmatched commands" toggle to "permit" (which should allow any commands, right?) it still doesn't allow any commands. I added the Shell Command group to the group the students are members of...
My AAA commands are as follows:
aaa new-model
aaa authentication login default local group tacacs+
aaa authorization exec default local group tacacs+
aaa authorization commands 7 default group tacacs+
aaa accounting exec default start-stop group tacacs+
aaa accounting commands 7 default start-stop group tacacs+
aaa accounting commands 15 default start-stop group tacacs+
aaa accounting system default start-stop group tacacs+
Any ideas? Any thoughts?
Thanks!
Michael
QU.edu

Hey Steve -
I tried your recommendation, and it works, kinda. When I turn on that command, after authentication, I get dropped in at Privlege 15 and have full access to commands.
Unfortunately, this is different than the telnet access in a key way; when I telnet in, I get Priv-15, but I'm restricted on commands I can do based upon ACS authorization of specific commands. When I console in, I have full access to all commands, with no restrictions.
Additionally, my console access has two level security, with a login password (to Priv-1) and an enable password (to Priv-15). When I use the "Privilege level 15" command, it bypasses the enable password for the local accounts and allows full access with just the login password.
Maybe I'm asking for too much. (And I appreciate your patience with me!) What I want on the console port is this:
1. A username prompt
- this is fine
2. A password prompt
- this is fine also
3. User name & PW are authenticated against ACS
- this works
4. If user is a valid ACS user, they should receive Priv-15 rights and be restricted by the commands they are authenticated to use in ACS
- this does not work. They only receive Priv-15 if I use "privilege level 15", but they are not restricted at all to certain commands. (They _are_ restricted under telnet however.)
5. If a user is not a valid ACS but a local account exists, the user gets dumped to a Priv-1 prompt, and must enter the enable to get to Priv-15. (This also is how it works under telnet.)
Sorry if this really confusing, it's difficult to explain in a forum. I'm basically looking for the same behavior from a console connection as from a telnet connection; I'm not sure why it's so difficult to do...
Michael

Allow some show commands in AAA Authorization Set

I'm working on creating AAA authorization sets for our environment and ran into a question!
I'd like to be able to enable ALL show commands except 'show run'. I would also like to enable 'show run interface'. I've figured out how to enable all show commands and disable show run. The problem I'm finding is that since 'show run interface' is a subset of 'show run' it seems to disable. Even if I try to explicitly enable it.
Is there a way to disable 'show run' but enable all other show commands and 'show run interface' with a AAA authorization set?
ACS Version 4.1.
Command set is configured:

Changing it to 'deny running-config' does the exact same thing. It looks like it's seeing the 'show running-config' then stoping on that before anything else. I've tried adding 'permit run interface' in ACS and same thing. Other AAA Authorization set commands work just fine.
On the switch (its a 2960G-8TC-K) running 12.2(58)SE2.
aaa group server tacacs+ SHS
server 10.10.11.200
aaa authentication login verifyme group TACACS+ local
aaa authorization config-commands
aaa authorization exec verifyme group TACACS+ local
aaa authorization commands 0 default group TACACS+
aaa authorization commands 1 default group TACACS+
aaa authorization commands 15 default group TACACS+
aaa accounting send stop-record authentication failure
aaa accounting exec verifyme start-stop group TACACS+
aaa accounting commands 15 default start-stop group TACACS+
aaa accounting network verifyme start-stop group TACACS+
aaa accounting system default start-stop group TACACS+
aaa session-id common
Debugs!
Jun 21 11:07:39: AAA: parse name=tty0 idb type=-1 tty=-1
Jun 21 11:07:39: AAA: name=tty0 flags=0x11 type=4 shelf=0 slot=0 adapter=0 port=0 channel=0
Jun 21 11:07:39: AAA/MEMORY: create_user (0x3A790DC) user='test' ruser='SGAVEJ01' ds0=0 port='tty0' rem_addr='async' authen_type=ASCII service=NONE priv=15 initial_task_id='0', vrf= (id=0)
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD (4105592267): Port='tty0' list='' service=CMD
Jun 21 11:07:39: AAA/AUTHOR/CMD: tty0 (4105592267) user='test'
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD (4105592267): send AV service=shell
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD (4105592267): send AV cmd=show
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD (4105592267): send AV cmd-arg=running-config
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD (4105592267): send AV cmd-arg=interface
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD (4105592267): send AV cmd-arg=GigabitEthernet
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD (4105592267): send AV cmd-arg=0/1
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD (4105592267): send AV cmd-arg=
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD(4105592267): found list "default"
Jun 21 11:07:39: tty0 AAA/AUTHOR/CMD (4105592267): Method=TACACS+ (tacacs+)
Jun 21 11:07:39: AAA/AUTHOR/TAC+: (4105592267): user=test
Jun 21 11:07:39: AAA/AUTHOR/TAC+: (4105592267): send AV service=shell
Jun 21 11:07:39: AAA/AUTHOR/TAC+: (4105592267): send AV cmd=show
Jun 21 11:07:39: AAA/AUTHOR/TAC+: (4105592267): send AV cmd-arg=running-config
Jun 21 11:07:39: AAA/AUTHOR/TAC+: (4105592267): send AV cmd-arg=interface
Jun 21 11:07:39: AAA/AUTHOR/TAC+: (4105592267): send AV cmd-arg=GigabitEthernet
Jun 21 11:07:39: AAA/AUTHOR/TAC+: (4105592267): send AV cmd-arg=0/1
Jun 21 11:07:39: AAA/AUTHOR/TAC+: (4105592267): send AV cmd-arg=
Jun 21 11:07:39: TAC+: Using default tacacs server-group "TACACS+" list.
Jun 21 11:07:39: TAC+: Opening TCP/IP to 10.10.11.200/49 timeout=5
Jun 21 11:07:39: TAC+: Opened TCP/IP handle 0x3A41210 to 10.10.11.200/49 using source 10.40.0.14
Jun 21 11:07:39: TAC+: 10.10.11.200 (4105592267) AUTHOR/START queued
Jun 21 11:07:39: TAC+: (4105592267) AUTHOR/START processed
Jun 21 11:07:39: TAC+: (-189375029): received author response status = FAIL
Jun 21 11:07:39: TAC+: Closing TCP/IP 0x3A41210 connection to 10.10.11.200/49
Jun 21 11:07:39: AAA/AUTHOR (4105592267): Post authorization status = FAIL
Jun 21 11:07:39: AAA/MEMORY: free_user (0x3A790DC) user='test' ruser='SGAVEJ01' port='tty0' rem_addr='async' authen_type=ASCII service=NONE priv=15 vrf= (id=0)

Aaa authorization with Tacacs+

Hello All,
I am trying to figure out how aaa authorization with tacacs+ works.
I am totally comfortable with aaa authentication..But am not able to understand how it works...How diff priv levels are assigned to diff users?..
I am totally freaked out...

The device side side setup is pretty simple. You just use the aaa authorization command set. A good bit of the setup is on the ACS server end.
Cisco has a pretty thorough configuration example posted here.

Command confusion - aaa authorization config-commands

I created a new Shell Command Authorization Set within ACS to only allow a port to be configured for a voice VLAN.
>> Shell Command Authorization Sets
      Name: Restricted_Voice
      Description: Configure port voice vlan only.
      Unmatched Commands: Deny
      Add: enable
      Add: configure / permit terminal <cr>
      Add: interface / permit Gi*
      Add: interface / permit Fa*
      Add: switchport / permit voice vlan *
My switch configuration has the following aaa authorization related lines:
     aaa authorization commands 1 default group tacacs+ if-authenticated
     aaa authorization commands 15 default group tacacs+ if-authenticated
When I tested the Shell Set, I noticed that all (config) mode commands were allowed (ie description, hostname). It was only after I added "aaa authorization config-commands" to the switch configuration did my Shell Set began working as I expected it to be.
I went and read up the command reference for "aaa authorization config-commands" in
http://www.cisco.com/en/US/docs/ios/11_3/security/command/reference/sr_auth.html#wp3587.
My comprehension of the command is that by just issuing ' aaa authorization commands 15 ....' this command encompasses the checking of config mode commands and that I did not need to add the stand-alone "aaa authorization config-commands" statement. But clearly, from my testing, I needed the extra statement.
It looks like I resolved my issue and need to add the new statement to all my switches, I'm wondering if someone can help clarify the usage guidelines for me. I'm I one of the few or only one that misinterpreted these "aaa authorization" commands?

Hi Axa,
I have a similar setup and have full Exec Level permissions using only aaa authorization commands level method
The below is taken from cisco.com and explains that you should not require the
aaa authorization config-commands unless you have at some point used the no aaa authorization config-commands command to prevent configuration commands from the Exec User
This in essense is a hidden configured default i.e.you switch on auth for config-commands automatically when you use the aaa authorization commands level method command!
From Cisco.com (I have underlined the key points)
aaa authorization config-commands
To disable AAA configuration command authorization in the EXEC mode, use the no form of the aaa authorization config-commands global configuration command. Use the standard form of this command to reestablish the default created when the aaa authorization commands level method1 command was issued.
aaa authorization config-commands
no aaa authorization config-commands
Syntax Description
This command has no arguments or keywords.
Defaults
After the aaa authorization commands level method has been issued, this command is enabled by default—meaning that all configuration commands in the EXEC mode will be authorized.
Usage Guidelines
If aaa authorization commands level method is enabled, all commands, including configuration commands, are authorized by AAA using the method specified. Because there are configuration commands that are identical to some EXEC-level commands, there can be some confusion in the authorization process. Using no aaa authorization config-commands stops the network access server from attempting configuration command authorization.
After the no form of this command has been entered, AAA authorization of configuration commands is completely disabled. Care should be taken before entering the no form of this command because it potentially reduces the amount of administrative control on configuration commands.
Use the aaa authorization config-commands command if, after using the no form of this command, you need to reestablish the default set by the aaa authorization commands level method command.
Examples
The following example specifies that TACACS+ authorization is run for level 15 commands and that AAA authorization of configuration commands is disabled:
aaa new-model
aaa authorization command 15 tacacs+ none
no aaa authorization config-commands

AAA Authorization with ACS Shell-Sets

Hi all,
I am using a cisco 871 router running Version 12.4(11)T advanced IP Services.
I am having trouble getting AAA Authorization to work correctly with ACS.
I am able to set the users up on ACS fine and assign them shell and priv level 7.
I then setup a Shell Auth Set, and enter in the commands show and configure.
When I log in as a user, I get an exec with a priv level of 7 no problems, but I never seem to be able
to access global config mode by typing in conf (or configure) terminal or t.
If I type con? the only command there is connect, configure is never an option...
The only way I can get this to work is by entering the command:
privilege exec level 7 configure terminal
I thought the whole purpose of the ACS Shell Set was to provide this information to the Router?
This is most frustrating
The ACS Server is set up with a Shell Command Authorization Set named Level_7
It is assigned to the relevant groups and I even have the "Unmatched Commands" option selected to "Permit"
The "Permit Unmatched Args" is also selected.
See an excerpt of my IOS config below:
aaa new-model
aaa group server tacacs+ ACS
server 10.90.0.11
aaa authentication login default group ACS local
aaa authorization exec default group ACS
aaa authorization commands 7 default group ACS local
tacacs-server host 10.90.0.11 key cisco
privilege exec level 7 configure terminal
privilege exec level 7 configure
privilege exec level 7 show running-config
privilege exec level 7 show
Hope you can help me with this one..
P.s I have tried it with the privilege commands on the router and removed from the router and just keep getting the same results!?

Hi,
So here it is,
You are actually using two different options and trying to couple then together. What I would suggest you is either use Shell command authorization set feature or play with privilege level. Not both mixed together.
Above scenario might work, if you move commands to privilege level 6 and give user privilege level 7. It might not sure. Give it a try and share the result.
This is what I suggest the commands back to normal level.
Below provided are steps to configure shell command authorization:
Follow the following steps over the router:
!--- is the desired username
!--- is the desired password
!--- we create a local username and password
!--- in case we are not able to get authenticated via
!--- our tacacs+ server. To provide a back door.
username password privilege 15
!--- To apply aaa model over the router
aaa new-model
!--- Following command is to specify our ACS
!--- server location, where is the
!--- ip-address of the ACS server. And
!--- is the key that should be same over the ACS and the router.
tacacs-server host key
!--- To get users authentication via ACS, when they try to log-in
!--- If our router is unable to contact to ACS, then we will use
!--- our local username & password that we created above. This
!--- prevents us from locking out.
aaa authentication login default group tacacs+ local
aaa authorization exec default group tacacs+ local
aaa authorization config-commands
aaa authorization commands 0 default group tacacs+ local
aaa authorization commands 1 default group tacacs+ local
aaa authorization commands 15 default group tacacs+ local
!--- Following commands are for accounting the user's activity,
!--- when user is logged into the device.
aaa accounting exec default start-stop group tacacs+
aaa accounting system default start-stop group tacacs+
aaa accounting commands 0 default start-stop group tacacs+
aaa accounting commands 1 default start-stop group tacacs+
aaa accounting commands 15 default start-stop group tacacs+
Configuration on ACS
[1] Goto 'Shared Profile Components' -> 'Shell Command Authorization Sets' -> 'Add'
Provide any name to the set.
provide the sufficent description (if required)
(a) For Full Access administrative set.
In Unmatched Commands, select 'Permit'
(b) For Limited Access set.
In Unmatched commands, select 'Deny'.
And in the box above 'Add Command' box type in the main command, and in box below 'Permit unmatched Args'. Provide with the sub command allow.
For example: If we want user to be only able to access the following commads:
login
logout
exit
enable
disable
show
Then the configuration should be:
------------------------Permit unmatched Args--
login permit
logout permit
exit permit
enable permit
disable permit
configure permit terminal
interface permit ethernet
permit 0
show permit running-config
in above example, user will be allowed to run only above commands. If user tries to execute 'interface ethernet 1', user will get 'Command authorization failed'.
[2] Press 'Submit'.
[3] Goto the group on which we want to apply these command authorization set. Select 'Edit Settings'.
(cont...)

Command execution get very slow when AAA Authorization enable on ASR 1006

Without Authorization , I am able work smoothly with just click on ASR ...., But Once I enable Authorization it takes many secs to move to other command exampe ( If i hit config t or int gi1/0/1 , it take time to move to next command level) ...
These Authorization issue I am facing only on ASR and for Other Cisco Switches and Router its working fine wiith just a click.
Did any one face such issue , and how it is fix ...
See the Show version for ASR
Cisco IOS Software, IOS-XE Software (PPC_LINUX_IOSD-ADVIPSERVICESK9-M), Version 15.1(2)S, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Thu 24-Mar-11 23:32 by mcpre
Cisco IOS-XE software, Copyright (c) 2005-2011 by cisco Systems, Inc.
All rights reserved. Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0. The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY. You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0. For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.
ROM: IOS-XE ROMMON
NOITDCRTRCORP01 uptime is 10 weeks, 6 days, 1 hour, 16 minutes
Uptime for this control processor is 10 weeks, 6 days, 1 hour, 19 minutes
System returned to ROM by reload
System restarted at 17:47:32 IST Thu Oct 4 2012
System image file is "bootflash:/asr1000rp1-advipservicesk9.03.03.00.S.151-2.S.bin"
Last reload reason: EHSA standby down
AAA Commands on ASR 1006
aaa new-model
aaa group server tacacs+ tacgroup
server 10.48.128.10
server 10.72.160.10
ip vrf forwarding Mgmt-intf
ip tacacs source-interface GigabitEthernet0
aaa authentication login default group tacgroup local
aaa authentication enable default group tacgroup enable
aaa accounting exec default start-stop group tacgroup
aaa accounting commands 1 default start-stop group tacgroup
aaa accounting commands 15 default start-stop group tacgroup
aaa accounting connection default start-stop group tacgroup
aaa accounting system default start-stop group tacgroup
aaa authorization commands 0 default group tacgroup none
aaa authorization commands 1 default group tacgroup none
aaa authorization commands 15 default group tacgroup none
aaa session-id common
tacacs-server host 10.48.128.10 key 7 13351601181B0B382F04796166
tacacs-server key 7 053B071C325B411B1D25464058

I think your issue maybe related to your tacacs server. If you re-order the two servers (typically a 5 second timer before failover occurs) and see if that improves your performance:
You can try to debug the issue by referring to the command reference guide....i.e. debug tacacs...you can also try to telnet to both ip address to port 49 to see if the connection opens, in order to rule out issues where a firewall or routing to one of the tacacs servers is failing. I also noticed you have the shared secret and tacacs server defined for one of the servers, is the sam present for the other server that is in the server group?
server 10.48.128.10
server 10.72.160.10
to
server 10.72.160.10
server 10.48.128.10
Thanks,
Tarik Admani
*Please rate helpful posts*

Aaa authorization config-commands

Hello,
Can anybody explain what is the purpose of this command. I studied the documentation (command reference) but unable to clearly understand the purpose of this command.
Thanks in advance,
Regards,
Mo

This was the best desciption of this command I could find on cisco's site. It sounds to me like if you use the no form of this command you will not be able to use any configuration commands.
Cisco:
Usage Guidelines
If the aaa authorization commands level method command is enabled, all commands, including configuration commands, are authorized by authentication, authorization, and accounting (AAA) using the method specified. Because there are configuration commands that are identical to some EXEC-level commands, there can be some confusion in the authorization process. Using the no aaa authorization config-commands command stops the network access server from attempting configuration command authorization.
After the no form of this command has been entered, AAA authorization of configuration commands is completely disabled. Care should be taken before entering the no form of this command because it potentially reduces the amount of administrative control on configuration commands.
Use the aaa authorization config-commands command if, after using the no form of this command, you need to reestablish the default set by the aaa authorization commands level method command.
Note You will get the same result if you (1) do not configure this command, or (2) configure no aaa authorization config-commands.
The following example specifies that TACACS+ authorization is run for level 15 commands and that AAA authorization of configuration commands is disabled:
aaa new-model
aaa authorization command 15 group tacacs+ none
no aaa authorization config-commands
http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps5187/products_command_reference_chapter09186a008017cf16.html#wp1086510

AAA authorization fails, but still command is executed...

Hi everyone,
i've implemented authorization and it basically works. The user can only use a limited set of commands (show int status, conf t, interface ethernet, interface gigabitethernet, interface fastethernet, shut, no shut).
Now I try to configure a loopback or Vlan interface, which should not be allowed.
COMMANDS IMPLEMENTED:
aaa authorization config-commands
aaa authorization commands 0 vty group tacacs+ none
aaa authorization commands 1 vty group tacacs+ none
aaa authorization commands 15 vty group tacacs+ none
line vty 0 15
authorization commands 0 vty
authorization commands 1 vty
authorization commands 15 vty
COMMAND AND OUTPUT FROM TESTING:
SWITCH(config)#int vlan 2
Command authorization failed.
DEBUG AAA AUTHORIZATION:
SWITCH#
Dec 7 14:31:50: AAA: parse name=tty1 idb type=-1 tty=-1
Dec 7 14:31:50: AAA: name=tty1 flags=0x11 type=5 shelf=0 slot=0 adapter=0 port=1 channel=0
Dec 7 14:31:50: AAA/MEMORY: create_user (0x46603F4) user='USER1' ruser='SWITCH' ds0=0 port=
'tty1' rem_addr='10.10.255.249' authen_type=ASCII service=NONE priv=15 initial_task_id='0', vrf= (id=0)
Dec 7 14:31:50: tty1 AAA/AUTHOR/CMD (60725991): Port='tty1' list='SCAS' service=CMD
Dec 7 14:31:50: AAA/AUTHOR/CMD: tty1 (60725991) user='USER1'
Dec 7 14:31:50: tty1 AAA/AUTHOR/CMD (60725991): send AV service=shell
Dec 7 14:31:50: tty1 AAA/AUTHOR/CMD (60725991): send AV cmd=interface
Dec 7 14:31:50: tty1 AAA/AUTHOR/CMD (60725991): send AV cmd-arg=Vlan
Dec 7 14:31:50: tty1 AAA/AUTHOR/CMD (60725991): send AV cmd-arg=2
Dec 7 14:31:50: tty1 AAA/AUTHOR/CMD (60725991): send AV cmd-arg=<cr>
Dec 7 14:31:50: tty1 AAA/AUTHOR/CMD (60725991): found list "SCAS"
Dec 7 14:31:50: tty1 AAA/AUTHOR/CMD (60725991): Method=tacacs+ (tacacs+)
Dec 7 14:31:50: AAA/AUTHOR/TAC+: (60725991): user=USER1
Dec 7 14:31:50: AAA/AUTHOR/TAC+: (60725991): send AV service=shell
Dec 7 14:31:50: AAA/AUTHOR/TAC+: (60725991): send AV cmd=interface
Dec 7 14:31:50: AAA/AUTHOR/TAC+: (60725991): send AV cmd-arg=Vlan
Dec 7 14:31:50: AAA/AUTHOR/TAC+: (60725991): send AV cmd-arg=2
Dec 7 14:31:50: AAA/AUTHOR/TAC+: (60725991): send AV cmd-arg=<cr>
Dec 7 14:31:50: AAA/AUTHOR (60725991): Post authorization status = FAIL
Dec 7 14:31:50: AAA/MEMORY: free_user (0x46603F4) user='USER1' ruser='SWITCH' port='tty1' r
em_addr='10.10.255.249' authen_type=ASCII service=NONE priv=15
As you can see the reply from the Tacacs is a "FAIL", but still the command is executed.
RESULT:
SWITCH#sh run int vlan 2
Building configuration...
Current configuration : 38 bytes
interface Vlan2
no ip address
end
QUESTION:
I don't understand what the problem is...Since I get a FAIL from the Tacacs Server I assume that the configuration on that side is fine.
But why would the switch ignore a FAIL and still execute the command? Same problem exists with the Loopback-Interface.
Is this me not understandig the basic concept of AAA or is this some other problem?
The Switch is a Cisco WS-C3750-24TS (running c3750-ipbasek9-mz.122-50.SE2.bin).
The Tacacs runs Cisco Secure ACS4.2.0.124
Thanks,
Tom

Hi Tom,
this is CSCtd49491 : TACACS+ command authorization for interface configuration fails .
The bug is currently in a Closed state, meaning that the "Bug report is valid, but a conscious decision has been made not to fix it at all or in all releases."
As far as I can tell, the impact is rather limited since the interface that gets created will have no effect unless the vlan exists, and even then the effect is minimal since it cannot be configured.
You may want to open a TAC case or work with your account team to get the bug re-opened if this is still a concern though.
hth
Herbert

ACS Tacacs+ aaa authorization commands

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