Cisco AAA/Identity/Nac :: TACACS Authentication Working Via SSH But Not HTTP (ACS 5.1 / 3560)
Aug 26, 2010
My switches are able to successfully authenticate user access against ACS 5.1 via SSH with TACACS+, but I am not able to authenticate via HTTPS with TACACS+. I don't even get a log in ACS when attempting to authenticate via HTTPS.
Here is my AAA config, followed by a debug:
aaa new-modelaaa authentication login ACCESS group tacacs+ localaaa authorization consoleaaa authorization config-commandsaaa authorization exec ACCESS group tacacs+ aaa authorization commands 1 Priv1 group tacacs+ none
[Code]......
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Jul 25, 2011
We have a Catalyst 3750 switch that failed over to local login after the Tacacs authentication stopped working. I went through the configuration settings and everything appears to be identical to another switch in this same building.
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Oct 13, 2011
I am trying configure tacacs authentication for http in Cisco 2960 with IOS 15.0.1.SE. [code] But the device is not authenticating. It ask the credentials (user and pass) but not authenticates.
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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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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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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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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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Jan 3, 2012
While working in a 3560 all of a sudden I received the message "command authorization failed" while trying to issue certain commands.
It appears I lost my priv 15 authorization. We have seen this before, we do not have access to the ACS to trouble shoot the issue.I tried logging in a 2nd and 3rd time using tacacs and received the same error whenever I issued a command such as dir flash: , copy tftp flash or show run. At the time I was trying to copy IOS to the switch, I had a co-worker log in and it was fine for him and he completed the copy.
Once completed I logged back in and all was fine again. We suspect an issue with ACS? possibly a timeout of our TACACS authorization ?
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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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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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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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Aug 18, 2011
how do i configure user authentication via TACACS on UCS 1.4 with ACS 5.2? My TACACs connection works, and my user authentication is successful, but i can only get read-only rights. I have tried several versions of "cisco-av-pair= role=admin" both as mandatory attributes named role and as cisco-av-pair=role , with "admin" as the value, and i still get read-only.
When i attempt to find any documentation, it only describes ACS 4.2, which is another problem i have with most documentation for new cisco products (i have this exact issue with my NAMs, nothing i do to change the attributes results in successfully logging into the NAM, and all config guides are written in 4.2 speak).
is there any possiblity cisco is going to release some documentation on how to convert 4.2 speak to 5.2 speak?
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Aug 22, 2009
We added AAA client in the Cisco ACS 5.0 for WLC 4402 (TACACS+ Authentication) and configured WLC 4402 to use TACACS+ authentication for the management access. We can't get this work for some reasons.
Other Cisco routers and switches all worked fine with TACACS+ authentication. This is a TACACS debug output from the WLC;
Sun Aug 23 16:19:06 2009: tplus response: type=1 seq_no=2 session_id=f59bbf0b length=15 encrypted=0
Sun Aug 23 16:19:06 2009: TPLUS_AUTHEN_STATUS_GETPASS
[Code].....
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Jan 5, 2012
ACS 5.1 is failing to authenticate tacacs authentication to the ASA firewall, getting
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Mar 15, 2010
I've been configured my device 6506-9 with TACACS+ server authentication: [code]
but when I tried to access the device only uses authentication local but not uses TACACs (with username/password defined) it can be an error in configuration? in the other devices of network this works properly, only it's wrong in Cat6506-E
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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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Jun 6, 2011
I am experiencing an issue where NX-OS on our 5010s is allowing both Local AND TACACS authentication concurrently. If I don't configure any aaa authorization commands, the locally logged in user has unmitigated access to the device. Once I enable aaa authroization, all commands issued by the locally logged in user are denied by ACS, but they can still log in to the device. When I comb through the logs on the ACS server, I see successful logins when TACACS credentials are used, and also the failed attempts when the locally configured credentials are used. On the switch, however, I receive "%TACACS-3-TACACS_ERROR_MESSAGE: All servers failed to respond" when using locally configured credentials on the switch itself. We are running ACS v4.2.
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Dec 29, 2011
I have a customer who used to own a 3750 with a older version of IOS. The switch he had used a three year old version of IOS which allowed him to browse to the switch IP and manage it via HTTP without entering a password at all. Now that he has a replacement switch with a new ver of IOS (since the previous switch died). We slapped the config on from the old switch but no matter what we do (understanding that new http aaa authentication commands were added) we cant get this thing to let him in without prompting him for a password. I understand this was an insecure config to begin with so I shouldn't be advocating using it in the first place, but this is what the customer wants.Basically what I'm trying to figure out is are we banging our heads into the wall for nothing as the "ip http server" will not allow an authentication method of "none" anyway? None of the offical documentation I have read for the http aaa authentication cmds shows this as an example nor have I found any blog posts on how to do it ether. Perhaps Cisco removed this by design.
Here is the config:
aaa new model
aaa authentication login default local
aaa authentication enable default none
aaa authentication login none none
ip http server
ip http authentication aaa login-authentication none
[code]....
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Mar 19, 2012
I am trying to get AAA authentication for HTTP to use radius, and seem to be having problems with setting the priviledge level. It works fine with SSH login, but doesn't work with web management. The model is a WS-CBS3130X-S-F running 12.2(58)SE1 with http version 1.001.002...
Config is as follows:
aaa new-model
aaa authentication login VTYSandHTTP group radius local
aaa authorization exec VTYSandHTTP group radius local
ip http server
ip http authentication aaa login-authentication VTYSandHTTP
[code]...
This is what I get when I try to log on to HTTP
HTTP AAA Login-Authentication List name: VTYSandHTTP
HTTP AAA Login-Authentication List name: VTYSandHTTP
HTTP: Authentication failed for level 15
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Aug 18, 2011
Find here the extraction of the configuration and the debug sysout. The radius servers works fine with all the other accesss like ssh, telnet...
Just the http access fail. This configuration work fine with the version 12.2.55 installed before.
Aaa new-model
aaa authentication login default group radius local
aaa authentication login physique local
[Code].....
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Feb 3, 2013
C4948-10G switch running IOS 15.0(2)SG ?ACS 4.2 cannot authenticate on the vrf interface. The issue on vrf aaa authentication.
aaa new-model
!
!
aaa authentication login default group tacacs+ local
aaa authentication login no_tacacs local
aaa authentication enable default group tacacs+ enable
[code]....
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Aug 17, 2011
I have a dot1x client with client certificate working well with my ACS 5.2 and EAP-TLS. Now I would like to configure the Re-Auth periode on the ACS 5.2, I did the following:
1. Configure a Access Profile with Reauthentication Timer = static and 30 seconds (see attachment ACS1.png and ACS2.png)
2. Enabled authentication periodic and authentication timer reauthenticate server on switchport
interface GigabitEthernet1/0/x
description to dot1x clients
switchport access vlan 5
switchport mode access
authentication event fail action authorize vlan 998
[code]....
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Mar 27, 2012
on the followup the document "Configuration example : central web-authentication with a switch and Identity Service Engine" by Nicolas Darchis, since the redirection on the switch is not working.
I'm using ISE Version : 1.0.4.573 and WS-C2960-24PC-L w/software 12.2(55)SE1 and image C2960-LANBASEK9-M for the access.
The interface configuration looks like this:
interface FastEthernet0/24
switchport access vlan 6
switchport mode access
switchport voice vlan 20
ip access-group webauth in(code)
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Mar 25, 2011
How to be able to locate a sample, working configuration of tacacs+ authentication on the ASA5510?
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Jan 4, 2011
I'm trying to get user authentication backed off to ACS 5.1, I've got it working but not the way I'd like. This is using the TACACS settings not ACS mode.I've created a local user in CW and assigned it to the correct roles, then created a user in ACS with the same name and a different password and this works fine.My question is can I set the roles on the TACACS server using a shell profile/custom attributes. All the documentation I can find is for ACS v4?
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Feb 17, 2012
All ip's and any identifying numbers have been change to protect.
I have a 6500 series switch that for some reason will not authenticate to the tacacs server. When you try, you get a password authentication failure. However, it will let you use the configured username and secret to log in thru ssh. And the enable secret to get into privileged mode. Tacacs key is correct, btw.we will call the server vlan 300 and the admin vlan 400.the tacacs source interface is in vlan 400 and the tacacs server is in vlan 300.
I can ping the tacacs server via the switch, but when i use the source cmd with the ip address of the admin interface vlan, ping will not work. I changed the tactics source interface to vlan 300 (the server vlan) and authentication with the tacacs server works fine. ip routing is turned on. There are entries for both the server vlan subnet and the ad-min vlan subnet in the routing table. There are only standard access-lists, and none of them are blocking packets from getting to the tacacs server via the admin vlan.
I could just leave the source interface on the int vlan for the servers, but I would like to find out why this isn't working. I have 1 other 6500 switch on a different network that is configured exactly the same (except for ip's, keys, and vlans) and am not having any issues with that LAN. I also have 6 other 3700 switches on the network that Im having an issue with, and none of them are having issues with authentication.
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Jul 12, 2012
I want to configure managment-access authentication to the WCS via tacacs+. The AAA Server is Cisco ACS 5.2.I made it and it works, but only with PAP Authentication Type. Chap doesn't work 4 me.The Access Service is configured with allowed protocols PAP and CHAP.The ACS Monitor just display an error with these steps:Received TACACS+ Authentication START Request
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Dec 27, 2012
We are using Cisco ACS server Version : 5.3.0.40.6. Our tacacs appliances are crashing on AD authentication on a fairly regular basis. I have been searching Cisco.com to see whether we are on the latest version or not however I couldn't find anything lattest than what we are currently using. Are we on the latest version?
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Sep 12, 2011
Is there a decent guide on how to configure ACS5.2 for TACACS management authentication of WCS?
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Mar 26, 2011
I have follow below URL to disable the https over web authentication:
[URL]
What i want to achieve is disable https over web authentication due to certificate issue, but it seems like even we have disable the http over web management as above URL describe, still https while doing web authentication. Or it is possible to configure use port other than 80, like 8080 for web authentication? (need to reboot the wlc?)Is there any bug that related to this CSCsy32145?
WLC Software Version 6.0.196.0
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Jun 4, 2013
We are using WLC 2500 and AP 1041 with web authentication. Due to we do not have the trusted/public certificate and want to get rid of the certificate warning during the user login. Is this possible to change the web authentication method from HTTPS to HTTP.
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Jul 2, 2012
We have ASA 5520 as SSL VPN concentrator so users can access internal web from outside. Our internal web also has several internet URL. What we want is when user click internet URL in our internal web, ASA forward those request to internal proxy server. I already config proxy using port 8080 and username "companyuser" and password, but always have authentication failed on ssl vpn browser. We uses forefront TMG as proxy. Username and password have right to access Internet.
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