Aaa authorization console command
Hi,
I don't really understand the need of the command "aaa authorization console".
We indeed often configure these lines, which according to me already ar eapplied by default to VTY, Console, etc ...:
aaa authorization exec default group tacacs+ if-authenticated
aaa authorization commands 15 default group tacacs+ if-authenticated
Am I wrong? Or do these lines apply only to the VTY linse?
Thanks by advance
I learned this locking out form console today in the hard-way
we use as standard
aaa authentication login default group tacacs+ enable
aaa authentication enable default group tacacs+ enable
aaa authorization console
aaa authorization exec default local group tacacs+ if-authenticated
aaa authorization commands 1 default group tacacs+ if-authenticated
aaa authorization commands 15 default group tacacs+ if-authenticated
and I missed the trailing "if-authenticated" in line "aaa authorization exec default local group tacacs+ if-authenticated", unfortuanatly also the tacacs serves wasn't reachable.
So no way to log in without the hard way rebooting and reconfiguring again
Similar Messages
-
Hi,
i have the following config :
aaa new-model
aaa authentication login NO_LOGIN none
aaa authentication login ADMINS group radius local
aaa authentication login CONSOLE group radius local
aaa authorization exec NO_AUTHOR none
aaa authorization exec ADMINS group radius local
aaa authorization exec CONSOLE group radius local
enable secret cisco
username cisco privilage 15 secret cisco
line con 0
password 7 05080F1C2243
authorization exec CONSOLE
login authentication CONSOLE
line vty 0 4
password 7 045802150C2E0C
authorization exec ADMINS
logging synchronous
login authentication ADMINS
line vty 5 15
password 7 060506324F41
authorization exec ADMINS
logging synchronous
login authentication ADMINS
When i am tryin gto login to the switch from vty line i come directly to privillage mode, but when loging to console port i come to the exec mode (privilage 1) and i cant go further to the user privillage mode . each time i have to type a password (i type the enable one) and my access is denied.
when issuing the command # aaa authorization console (using telnet from other switch)
the problem is solved.
Can someone please explain why is this happening? i think after logging in with local account (with privillage 15) from console port i should get directly to privilage mode, or am i wrong ?aaa authorization console is a hidden command. We have to execute this command to enable authorization for console line. If you create a method list "aaa authorization exec CONSOLE group radius local" for console and try to apply it on line console 0, it will throw an error that without "aaa authorization console" all authorization commands for console is useless. You have to first enable authorization for console with the help of aaa authorization console.
command refrence
http://www.cisco.com/en/US/docs/ios/12_2/security/command/reference/srfauth.html#wp1024046
Jatin Katyal
- Do 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,
MoThis 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 -
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 -
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 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,
TomHi 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 -
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 RegardsIf 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! -
Restrict aaa access using command authorization windows acs3.6
i need to enable aaa users to shut and unshut interfaces but nothing else. i already have all the users and groups setup but when i modify the command auth set to include "configure" "permit term" they are given unrestricted access.
any help appreciatedOn the router there's a:
aaa authorization config-commands
command, make sure you have that in. You then have to set up command authorization on the TACACS server to allow "interface permit any", "shutdown" and "no shutdown" commands. -
AAA Authorization named authorization list
Ladies and Gents,
Your help will be greatly appreciated – I am currently studying CCNP Switch AAA configuration and I work with a tacacs+ server at work butI having difficulty getting my head around the below
Cisco.com extract below
When you create a named method list, you are defining a particular list of authorization methods for the indicated authorization type.
Once defined, method lists must be applied to specific lines or interfaces before any of the defined methods will be performed. The only exception is the default method list (which is named "default"). If the aaa authorization command for a particular authorization type is issued without a named method list specified, the default method list is automatically applied to all interfaces or lines except those that have a named method list explicitly defined. (A defined method list overrides the default method list.) If no default method list is defined, local authorization takes place by default.
My question is how do you define the Named Method List i.e. the none-default method list?
I don't mean the cisco switch config but how the list is created, is this on the tacacs+ server and the referred to in the CLI?
Any help would be much appreciated as I have read over tons of documents and I can’t see how this is created
Thanks in advance
DavidHi David,
An example of a named AAA list might look something like this:
aaa authorization exec TacExec group AAASrv local
In the example above, I've created a AAA authorization list for controlling shell exec sessions called "TacExec", which will check the remote AAA servers in the group "AAASrv" first; if the device receives no response from the remote servers, it will then atempt to validate the credentials via the local user database. Please remember that a deny response from the AAA server is not the same as no reposonse, the device will only check the local user database if an only if it recieves nothing back from the TACACS query.
Of course, before you create this method list, you need to define the TACACS servers via the "tacacs-server" command, and then add those servers to the group via the "aaa group server" command.
Below is a cut and paste from the AAA section on one of my devices:
aaa new-model
ip tacacs source-interface
tacacs-server host 10.x.x.x key 7
tacacs-server host 10.x.x.y key 7
aaa group server tacacs+ TacSrvGrp
server 10.x.x.x
server 10.x.x.y
aaa authentication login default local
aaa authentication login TacLogin group TacSrvGrp local
aaa authorization console
aaa authorization config-commands
aaa authorization exec default local
aaa authorization exec TacAuth group TacSrvGrp local
aaa authorization commands 0 default local
aaa authorization commands 0 TacCommands0 group TacSrvGrp local
aaa authorization commands 1 default local
aaa authorization commands 1 TacCommands1 group TacSrvGrp local
aaa authorization commands 15 default local
aaa authorization commands 15 TacCommands15 group TacSrvGrp local
aaa accounting exec default start-stop group TacSrvGrp
aaa accounting commands 15 default start-stop group TacSrvGrp
aaa session-id common
Notice that for the various authentication and authorization parameters, there is a named method list as well as a default method list. As per Cisco's documentation, a aaa method list called default (that you explicitly define) will apply to all input methods (con, aux, vty, etc) unless you set a named method list on the particular input line (see below):
line con 0
exec-timeout 5 0
line aux 0
exec-timeout 5 0
line vty 0 4
exec-timeout 15 0
authorization commands 0 TacCommands0
authorization commands 1 TacCommands1
authorization commands 15 TacCommands15
authorization exec TacAuth
login authentication TacLogin
transport input ssh
For the console and aux inputs, I only ever want to use local credentials for AAA purposes (ie: If I have to connect on an out-of-band interface, something is potentially wrong with the network connectivity), however for the VTY lines (SSH sessions in this instance), I always want to use the TACACS servers first, with local user credentials as a fallback mechanism.
One thing you need to be VERY mindful of when configuring your devices for AAA is the order of the commands that are entered. It is a relatively simple matter to lock yourself out from the device management if you don't pay close attention to the specific order that the commands are entered. Typically, I will first do a "show user" just to find out which VTY line that I'm connected on, and when I assign the named AAA method lists to the VTY lines, I normally leave the line that I'm on at the default (local), then I open a second session to the device, authenticate using my TACACS credentials, and complete the config on the remaining VTY line.
Keep in mind that there are some other parameters that you can define at the tacacs-server level (timeout value is a good one to look at) which you can use to enhance the AAA performance somewhat.
Hope this helps! -
Hi,
Configured the switch for the AAA authentication it's getting authenticated but it's failing for authentication.
When connected to console it worked- Authenticated and then supplied the enable password.
When telneted : it says "access approved" and "authorization failed"
Relevant switch configuration is as follows and also debug of aaa authorization.
+++++++++++++++++++++++++++++
no service single-slot-reload-enable
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
hostname Switch
aaa new-model
aaa authentication login default group radius local
aaa authentication enable default enable
aaa authorization config-commands
aaa authorization exec default group radius if-authenticated local
aaa authorization commands 15 default group radius if-authenticated local
enable secret 5 $lkl34579231$uK8U$B4sL3AiXAEUzZ8o.Dv34Y/
username cisco privilege 15 password 7 05080F1C224233
vlan 10
vlan 120
ip subnet-zero
vtp mode transparent
spanning-tree extend system-id
interface FastEthernet0/1
switchport access vlan 10
switchport mode access
no ip address
spanning-tree portfast
interface GigabitEthernet0/1
no ip address
interface GigabitEthernet0/2
no ip address
interface Vlan1
no ip address
shutdown
interface Vlan120
ip address 10.12.8.70 255.255.255.240
ip default-gateway 10.12.8.65
ip classless
ip http server
radius-server host 192.168.38.169 auth-port 1812 acct-port 1813
radius-server host 10.12.1.142 auth-port 1812 acct-port 1813
radius-server retransmit 3
radius-server key cisco
line con 0
line vty 0 4
password 7 grrfcb7swe
transport input telnet
line vty 5 15
end
Debug output :
Switch#
21:45:02: AAA/AUTHEN/CONT (2947331915): continue_login (user='(undef)')
21:45:02: AAA/AUTHEN (2947331915): status = GETUSER
21:45:02: AAA/AUTHEN (2947331915): Method=radius (radius)
21:45:02: AAA/AUTHEN (2947331915): status = GETPASS
21:45:06: AAA/AUTHEN/CONT (2947331915): continue_login (user='wrrt\trial1')
21:45:06: AAA/AUTHEN (2947331915): status = GETPASS
21:45:06: AAA/AUTHEN (2947331915): Method=radius (radius)
21:45:07: AAA/AUTHEN (2947331915): status = PASS
21:45:07: tty1 AAA/AUTHOR/EXEC (284909353): Port='tty1' list='' service=EXEC
21:45:07: AAA/AUTHOR/EXEC: tty1 (284909353) user='wrrt\trial1 '
21:45:07: tty1 AAA/AUTHOR/EXEC (284909353): send AV service=shell
21:45:07: tty1 AAA/AUTHOR/EXEC (284909353): send AV cmd*
21:45:07: tty1 AAA/AUTHOR/EXEC (284909353): found list "default"
21:45:07: tty1 AAA/AUTHOR/EXEC (284909353): Method=radius (radius)
21:45:07: AAA/AUTHOR (284909353): Post authorization status = FAIL -------------------------# authorization failed #
21:45:07: AAA/AUTHOR/EXEC: Authorization FAILED
21:45:09: AAA/MEMORY: free_user (0xDF12AC) user='wrrt\trial1' ruser='' port='tty1' rem_addr='10.12.7.71' authen_type=ASCII service=LOGIN priv=1
Switch#
Switch#
Do we need to change anything on Radius server or can we change the authorization preference to local and then to radius.
Please share the experience.
Thanks in advance,
SubodhHi Subodh,
I understand that you are trying to use command authorization using RADIUS.
aaa authorization commands 15 default group radius if-authenticated local
Command authorization is not supported in RADIUS. RADIUS does not allow users to control which commands can be executed on a router and which cannot.
Please refer the following link:
http://www.cisco.com/en/US/tech/tk59/technologies_tech_note09186a0080094e99.shtml
You need to use TACACS+ for configuring command authorization for IOS and PIX/ASA.
Regards,
Karthik Chandran
*kindly rate helpful post* -
Authorization config-commands - doubts
Hello Everyone,
So, for AAA Authorization,
When I issue : aaa authorization commands 15 default local. -> It will authorize every command on the exec for lvl 15.
The command above will overlap the: aaa authorization config-commands. ?!
I should use : aaa authorization config-commands. Just when i'm trying to authorize configuration commands ?!No, the aaa authorization config-commands is a must for the aaa authorization commands 15 default local to work. If the config-commands is missing from your config then no authorization will happen for level 15 commands. Take a look at this post:
https://supportforums.cisco.com/discussion/11409121/command-confusion-aaa-authorization-config-commands
Thank you for rating helpful posts! -
Aaa authorization interpretation
Hi..
Is this a correct interpretation on aaa authorization?
If I want to authorize certain commands or a certain privilege I use the following example
aaa authorization command 7 group tacacs
no aaa authorization config-commands
if you want to authorize all commands you would use the following:
aaa authorization config-commandsThanks Tariq, so if i issue the command:
aaa authorization commands 15 group tacacs
no aaa authorization config-commands
What commands are authorized? i'm quite confuse here because when issue the command "configure terminal" i get a "Command Authorization Failed" error will instead i'm in level 15, which is the highest level in which in my own understanding its the administrative level meaning I have a full access and why it's not..
Thanks in advance for all replies... -
Slow response on AAA Authorization
Hi,
We were configuring the AAA to use one of the TACACS server for authentication,authorization and accounting purpose. When we did the same, the command executed response become slow and even some times gives a message authorization failed. We thought, there should be useful information on the TACACS server to debug the same, but we were not able to find any message like that. The below is the config added and when we remove the configuration of AAA the login response and the command execution are good. We checked the path to reach from this router to TACACS server and seems good with no packet loss. Your asssistance would be really appreciated.
aaa new-model
aaa authentication login default group tacacs+ local
aaa authentication enable default group tacacs+ enable
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 accounting exec 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+
aaa accounting connection default start-stop group tacacs+
aaa accounting system default start-stop group tacacs+
aaa session-id common
tacacs-server host <ip address> timeout 5
tacacs-server directed-request
tacacs-server key <key>
Regards
Anantha Subramanian NatarajanHi JG,
Thanks for the reply.
Actually, I am not sure whether on our TACACS server,the single connect TACACS+ is enabled or not but I am just curious as the other router having same platform with same configuration details connecting to the same TACACS server is working fine.
The error message appears frequently and atleast not specific to some command. Infact every other time, it gives the error.
Our TACACS and SNMP engineer is suggesting to chenage the IOS as it seems have some identified bug related to the SNMP and hopefully we are planning to do the same.
Meantime , if you can know something more precise or any suggestions would be hugely appreciated.
Thanks
Regards
Anantha Subramanian Natarajan -
I'm configuring several switches and routers for TACACS with ACS SE. I have a need to do three levels of access, the groups are as follows:
1. Normal read-only access.
2. Full access with the exception of config t.
3. Full access.
What would be the best way to achieve this goal, I can see that if I create Shell Command Authorization sets on the ACS, I can configure one for group 1 and one for group 3. But will I be able to for Group 2? Is there a way to allow all, but explicitly block one command? Following this page: http://www.cisco.com/en/US/products/sw/secursw/ps2086/products_configuration_example09186a00808d9138.shtml leads me to believe that the capability may exist, but I have no way to confirm at the moment.Here are the config required for setting up aaa authentication and authorization.
Router(config)# username [username] password [password]
tacacs-server host [ip]
tacacs-server key [key]
aaa new-model
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
All the best !
Regards,
~JG -
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...)
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