Implementing Kerberos Authentication on Linux servers using script [closed]

Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago. Improve this question My client wants to implement Kerberos Authentication on multiple Oracle Linux Boxes. Do they need to be done manually or … Read more

klist -li 0x3e7 help needed

Trying to renew computer group membership without restarting by issuing klist -li 0x3e7 from an elevated command prompt, but it’s not working. Klist returns tickets flushed, but a gpresult still shows the old group memberships. Answer The complete command to purge is as below. klist -li 0x3e7 purge AttributionSource : Link , Question Author : … Read more

How to identify that the protocol is using by AD DC is Kerberous?

I have created a local environment as follows:- DC:- Windows server 2008<br> Client:- Windows 7<br> Domain:- januapp.local Now I read on somewhere that, the DC uses two types of Protocol for Authentication. 1.NTLM2.Kerberous Now when I type credentials of User listed in DC ‘users’ OU from client machine then I successfully logged in the domain … Read more

Ubuntu software stack to mimic Active Directory auth

I’m going to have an Ubuntu 11.10 box in a customer’s data center running a custom webapp. The customer will not have ssh access to the box, but will need authentication and authorization to access the webapp. The customer needs to have the option of either pointing the webapp at something that we’ve installed locally … Read more

RDP in 2008 R2 domain no longer working – possible Kerberos issue

Everything was working fine and no changes were made. For no apparent reason, we can no longer RDP to any domain computers except for the domain controllers themselves. This includes Windows 7 clients and non-controller 2008 R2 servers. After entering the password, we immediately get the following error message: “The logon attempt failed.” No other … Read more

Track down source of event 4771: Kerberos pre-authentication failed

Some process on a remote server is generating failed log-on attempts for a specific user account. I want to know what process it is. The account in question started generating these bad password attempts (4771, Failure code: 0x18) immediately after the user changed his password. I assume some utility, service, or application is using cached … Read more

Samba file server as domain member: error when joining domain

I would like to set up samba 4 to share a local directory, so that domain users are allowed to mount the directory. I don’t want domain users to be able to log in the linux machine, they should only be able to use the shared directory. There are 3 machines involved: dc: A windows … Read more

How kerberos authentication works?

I’ve tried to figure out how kerberos authentication works, the information which I found was always missing something as if a part of it was taken for granted. I am aware of the process in general but missing some details. Getting TGT: First a user should get a TGT (Ticket Granting Tickets) from the KDC … Read more

Squid 3.5.20 doesn’t authentificate via Active Directory and Kerberos

I make transparent proxy via AD and Kerberos V5. CentOS joined to Windows domain with realm: [root@vs-otr-squid02 ~]# realm list type: kerberos realm-name: DOMAIN.RU domain-name: configured: kerberos-member server-software: active-directory client-software: sssd required-package: oddjob required-package: oddjob-mkhomedir required-package: sssd required-package: adcli required-package: samba-common-tools login-formats: login-policy: allow-realm-logins Squid info: Squid Cache: Version 3.5.20 Service Name: … Read more

Client can’t authenticate to IIS site using Kerberos

We have several IIS hosted sites using windows authentication. Some of our users can logon in one of the sites, but getting never-ending authentication challenge in another (the second one is used in an iframe of first). We found out that users that can’t logon are using Kerberos authentication (others NTLM). All of the sites … Read more