Kerberos is a computer network authentication protocol, which allows nodes communicating over a non-secure network to prove their identity to one another in a secure manner. Its designers aimed primarily at a client–server model, and it provides mutual authentication — both the user and the server ...

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Cannot enable GSS-TSIG updates from Active Directory in BIND 9.10

I’m with a problem trying to enable GSS-TSIG with BIND 9.10. Before I start describing what I’ve done, I would like to say that I’ve already done this in in another domain without any problems. So I ...
0
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8 views

MacOS X 10.9 Mavericks Kerberos login w/ FreeIPA

Has anyone successfully set up authentication and authorization between MacOS X and FreeIPA? An old revision of the FreeIPA documentation explains how to get it working in 10.4 and nothing in their ...
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12 views

Avoid client keytab with Kerberized NFSv4

I would like to setup a Kerberized NFSv4 server such that clients do not need a keytab to mount a volume (but such that users get their privileges according to their Kerberos ticket as usual). Is it ...
1
vote
1answer
14 views

Apache - Replace Apache::AuthenNTLM with Kerberos (mod_auth_kerb)

Within an intranet system on Solaris we currently use perls Apache2::AuthenNTLM module to authenticate with a Win 2k3 doman server, so we can access the user ID of the person browsing the site. ...
0
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1answer
21 views

Kerberos in production on virtual machines

At the moment I am investigating the possibility to use Kerberos as the primary authentication protocol for our cloud structure. We'll probably follow through with this idea and for the sake of HA the ...
0
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1answer
14 views

FreeIPA krb5.conf has example.com entries

I have installed and reinstalled FreeIPA ipa-server-3.0.0-37.el6.x86_64 on a fully updated OEL 6.5 server a couple (3) times now and even if I destroy the existing /etc/krb5.conf file and reinstall ...
0
votes
2answers
54 views

Can't add my Red Hat 7 machine to our company's Active Directory

I'm trying to join my RHEL 7 VM machine to our company's AD. I can validate my login credentials just fine with kinit (No return if I enter the correct password, error if I enter the wrong one), ...
0
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0answers
17 views

problems creating a keytab file on win server

I am trying to create a keytab file. i see a warning WARNING: pType and account type do not match. This might cause problems. The command i use is ktpass -princ ...
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2answers
43 views

Kerberos ktutil, what kinds of encryption are available?

I am attempting to make a keytab using ktutil. I get to choose the encryption type, but the ktutil man page does not offer a list of possible choices. I also don't know which encryption method is the ...
4
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1answer
32 views

Does Active Directory's Kerberos implementation support per-user ticket lifetime settings?

With MIT Kerberos, the kadmin utility supports the creation of principals that have an explicit maximum ticket lifetime and renewal lifetime (-maxlife and -maxrenewlife arguments for add_principal) ...
0
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2answers
16 views

How to clear kerberos config

I am setting my machine as a kerberos client. I have a question on how the kerberos config file actually take effect and how to clear its effect. My experiment is as follow. Step 1, without editing ...
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0answers
52 views

Browser (SPNEGO) kerberos authentication on Windows Phone 8 IE

Is there a way to make Internet Explorer on Windows Phone 8 authenticate to a site using Windows Integrated Security Authentication with Kerberos through the Negotiate (SPNEGO) protocol? It seems to ...
0
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0answers
79 views

squid authentication error kerberos - windows active directory

I use squid on RHEL6 and I want that authentication is via AD windows 2008, I already joined the server to the windows domain and all users is already seen by wbinfo -u wbinfo -g but wbmin -t show ...
1
vote
1answer
30 views

BCP/xp_cmdshell access denied - but only when running procedure from outside the server

I've been attempting to run some of my team's database deployment code to a SQL 2014 server on a Windows 7 test box. Part of this code is a procedure that pulls in data from a file using BCP from a ...
1
vote
1answer
68 views

Why don't Active Directory user accounts automatically support Kerberos AES authentication?

I'm playing around with a test domain on Windows Server 2012 R2. I'm operating at the highest possible functional level and have no backwards-compatibility issues in my small test environment. ...
0
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0answers
47 views

Kerberos and SSH login

I've just configured a RHEL 7 for windows authentication (idmap_ad). Every check works but if i try to ssh with a domain user i get the error: Connection closed by ::1 Here follows the ssh log in ...
1
vote
2answers
80 views

IE HTTP Kerberos issues authenticating to site on FQDN not matching AD Domain

I have a site on a corporate domain that authenticates using Kerberos auto-login from IE and Chrome just fine, as long as the DNS being used to access it falls under the AD FQDN The AD domain is not ...
0
votes
2answers
751 views

kinit: Cannot contact any KDC for realm 'UBUNTU' while getting initial credentials

I am installing Kerberos5-1.12.1 on ubuntu machine by following the link: http://techpubs.spinlocksolutions.com/dklar/kerberos.html#krb-install Whenever i am trying to do : kinit user1 I am ...
1
vote
1answer
319 views

Unable to setup Kerberos on Ubuntu 14.04 - krb5kdc: No such file or directory - while initializing database for realm myrealm

I'm attempting to follow the guide on the Ubuntu wiki for installing and setting up Kerberos. I am running Ubuntu 14.04 (LTS) 64-bit. I have setup avahi-daemon in order to provide .local DNS names. I ...
1
vote
1answer
33 views

Is the Kerberos SPN FQDN significant to the server, or is the keytab enough?

I spend most of my time as a developer, so I'm not familiar with all the details... I have a service running on a linux host. I want to use Kerberos to transmit identity information to the service. ...
0
votes
1answer
27 views

Password reset is not working

I am using krb5 authentication to authenticate users in my machine. I am trying to change my password using passwd command but it failed. ~:$ passwd ~:$ Changing Password for bharathi ~:$ Kerberos 5 ...
0
votes
1answer
157 views

Issues with Kerberos trying to log on Samba 4 Active Directory Domain Controller from Windows

I'm trying to setup an Ubuntu Server with Samba 4 as Active Directory Domain Controller and I'm getting an error when I try to connect from a Windows machine. Here's Samba's log of the error (I've ...
0
votes
0answers
31 views

User under windows server AD access Linux server using kerberos

I installed AD on windows 2008 r2 sp1 server . And had configured all things follow the issue http://msdn.microsoft.com/en-us/library/ms995329.aspx ...
1
vote
1answer
262 views

FreeIPA: command-line tools do not work, 'No Kerberos credentials available'

We have a working FreeIPA installation, it's in production since February. Almost everything works as expected but when we try to run command-line FreeIPA-related tools none of them work: [admin@ipa ...
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0answers
32 views

kinit error: Realm not local to KDC, DC is in a subdomain

I have a user: oneuser@EXEMPLE.COM as principal and the next krb5.conf: [libdefaults] default_realm = EXEMPLE.COM default_tkt_enctypes = arcfour-hmac-md5 default_tgs_enctypes = ...
1
vote
1answer
176 views

Can't change password of FreeIPA admin - “Current password's minimum life has not expired”

We have a FreeIPA-based system, admin's password has expired and needs to be changed but the standard password changing procedure over SSH fails: sashka@cellar ~ ssh admin@ipa.xxxxxxxxxx.com ...
2
votes
0answers
50 views

Kerberos, .k5login and sudo

Background: I am using a Debian 7 system which I have integrated with an LDAP+Kerberos system using libnss-ldap, libpam-krb5 and nscd. I have modified sudoers to permit an LDAP group the right to sudo ...
2
votes
1answer
130 views

MSSQLSvc Service Principal Names, Kerberos, and NTLM

Was recently helping a DBA with an issue that appeared to be related to an invalid SPN. Discovered that a good number of SQL service accounts simply don't have an SPN set, resulting in NTLM ...
1
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2answers
239 views

nfs4 and kerberos: Wrong principal in request

My client/servers are both running Ubuntu 14.04 and kerberos user authentication works as intended. regular nfs4 mounts also work fine. All machines are running heimdal libraries. I haven't been able ...
3
votes
1answer
43 views

SSH authentication mode selection

I am trying to figure out the SSH mechanism used while I try to ssh onto a production host. I see that the SSH client can choose among the available modes. But I'm not sure which mode is chosen and ...
1
vote
2answers
218 views

Kerberized nfs4 mounts ERROR: No credentials found for connection to server

My client/servers are both running ubuntu 14.04 and kerberos user authentication works as intended. regular nfs4 mounts also work fine. All machines are running heimdal libraries. I haven't been able ...
2
votes
2answers
67 views

NFS client keytab: multiple machines

How should one go about setting up client-side keytab files for each client machine to access network services? My working example is NFSv4, which requires each client to have a Kerberos keytab ...
0
votes
0answers
64 views

bugzilla authenticate with kerberos + ldap + SSO

I want to set up bugzilla with SSO, i cannot find any good documentation on how to do this. I have managed to set up ldap login which works fine. now I have set up kerberos on apache which works fine, ...
3
votes
2answers
266 views

Why should I not run setspn.exe on the domain controller?

I found several references (see below) on blogs that the setspn.exe utility should be run from either a client or server machine in the domain, but not from the domain controller itself. ...
2
votes
1answer
239 views

Retreive the current Kerberos KVNO from Active Directory

I have a Kerberos problem with a Linux host connecting to a Windows KDC. I suspect that Kerberos key with the wrong version is to blame. One way to be shure would be to delete the SPN and create it ...
0
votes
1answer
77 views

Clustered instance - kerberos double hop woes

We've recently migrated our virtualised SQL databases to a bare metal solution in an active/active cluster. Everything is working great except SQL Reports. Ok, so a rundown of our setup here as it ...
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0answers
22 views

Kerberos credentials cache dates reported differently in Debian Squeeze and Debian Wheezy

I have two Debian servers which use same LDAP/Kerberos server, but dates in output of klist on them shown in different format - mm/dd/yyyy on squeeze vs dd/mm/yy on wheezy. Looks like they just use ...
4
votes
1answer
907 views

How to integrate Active Directory with FreeBSD 10.0 using security/sssd?

What are the required steps to authenticate users from an Active Directory running on Windows Server 2012 R2 in FreeBSD 10.0 using sssd with the AD backend with Kerberos TGT working?
4
votes
1answer
253 views

How to remotely generate Windows AD Kerberos keytab from a Unix machine?

I would like to know if it’s possible to create a keytab file direct from a client machine without using the ktpass utility in the Windows Server side. The main reason I would want this, is to ...
1
vote
1answer
51 views

Have Kerberos use AD groups instead of netgroups

Currently we are able to have kerberos authenticate users who are in active directory (AD) and added to ldap created netgroups. We also set their unix attributes and add them to the netgroup. IT ...
0
votes
0answers
60 views

NFS4 and NFS3 mount proble with sec=krb5

I am having a problem when mounting the NFS server share using sec=krb5 The error is WARNING: Failed to create krb5 context for user with uid 0 for server YYY WARNING: Failed to create machine krb5 ...
3
votes
1answer
187 views

“net ads join” fails in puppet exec but runs OK directly from command line

I have the following exec that joins a Linux (CentOS 6) host to an Active Directory domain. When run as root from the bash terminal, it runs successfully and the host is joined to the AD domain ...
6
votes
2answers
498 views

NetApp erroring with: STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT

Since a sitewide upgrade to Windows 7 on desktop, I've started having a problem with virus checking. Specifically - when doing a rename operation on a (filer hosted) CIFS share. The virus checker ...
2
votes
1answer
376 views

Why is MS SQL Server Using NTLM Authentication?

Windows Server 2008 R2. SQL Server 2008 R2 installed. MSSQL Service runs as Local System. Server FQDN is SQL01.domain.com. SQL01 is joined to an Active Directory domain named domain.com. The ...
4
votes
3answers
184 views

Multiple Realms and Multiple TGTs under MIT Kerberos for Windows

My local computer uses Windows 7 Pro and belongs to realm LR, managed by AD servers. I login to my computer while attached to that realm's network. I can view the TGT with MIT Kerberos for Windows ...
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134 views

Testing NTLM\kerberos against a public url

I am creating a java open source package that makes it easy to connect with httpclient 3.1 to resources that are protected by ntlm v1/v2 and kerberos. I need to test this tool against real world ...
0
votes
1answer
76 views

LAMP server kerberos config to authenticate against a read only Windows KDC in a dmz

Background: We have a number of AD networks (domains) that are connected through VPNs and have established AD trust relationships. We have an externally hosted web server and have configured ...
0
votes
2answers
387 views

Completely uninstall Kerberos on Ubuntu Server

I am experimenting with Kerberos and messed up the installation. I've tried editing the config files but have had no joy in resolving my problems which currently consist of not being able to ...
0
votes
1answer
151 views

cannot login to domain - kerberos issue?

We cannot login as domain admin on one server but can on others. When I looked at Active Directory, I can see that the computer object doesn't exist for the server we can't login to. There is, however ...
1
vote
0answers
87 views

Samba Authentication

I know it's going to seem like I haven't done the research here, because I have done it, and I know how many related questions and tutorials there are. I have read every tutorial I can find online for ...