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.

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Cannot logon to Windows 10 after upgrade away from domain [duplicate]

A user called me yesterday explaining that, over the weekend, she had upgraded her laptop from Windows 7 Professional to Windows 10. Unfortunately, she is not too savvy and tried to explain about how ...
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27 views

Why do I get duplicate Kerberos service tickets with no realm?

Under what circumstances will I obtain apparently-valid service tickets that are duplicates and that don't have an associated realm? That is, does this indicate a mis-configuration somewhere? Does it ...
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19 views

Loading kerberos keytab from root cron

When I run a script (see below) to load a kerberos keytab from a users cron it works just fine. Running it from root cron however a password is asked for the keytab and it aborts with: kinit: Generic ...
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9 views

Ubuntu Network > Cross device authentication > Single Login Registration

My firm runs an Ubuntu based developer environment. Recently due to the increase of new interns in our firm the firm asked me to setup a machine independent authentication system such that the users ...
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1answer
23 views

Restricting ssh access to server within a kerberos/ldap infrastructure

I have a MIT-Kerberos / OpenLDAP infrastructure. I want to limit the ssh-access for my users, so that only members of a specific group are allowed to ssh to my servers. When I just had OpenLDAP ...
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15 views

Kerberos failure in internet explorer on refresh

I have an apache httpd set up to do kerberos and it works fine in chrome, firefox, and IE11. But when I refresh the page in IE11, the resources fail with 401s, removing style and async content from ...
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15 views

Kerberos 5 Tacking on Realm Twice to Principal

I recently updated a Fedora 22 workstation and SSSD logins began to fail. Logs look good until sss_send_pac fails. Oddly the principal user is getting the domain added twice. For example: ...
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34 views

Is it possible to skip kerberos kinit & aklog? I want to use tramp/sshfs

I've been given access to a remote system. I've been instructed that I have to execute kinit and then aklog every time I log in. I am not sure what is the reason for it (I have read the kinit is ...
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1answer
12 views

Kerberised NFSv4 share for Yum repo

I am trying to set up a yum server where the packages are stored on an Kerberised NFSv4 share. How do I get the service username under which apache and reposync run (my-yum-service-accnt) to be able ...
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25 views

ssh authentication using kerberos keytab

I've been instructed to ssh into a server using a kerberos ticket. I have a keytab that I extracted using kadmin, but I'm not sure how to use it to authenticate. I've been using ssh for years, but ...
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1answer
545 views

'net ads join -U username' failing with an error 'NT_STATUS_IO_TIMEOUT'

I am attempting to provide access to Ubuntu shared directories using Active Directory users and group using Samba. I am following this article to install and configure AD and Unix so that access can ...
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1answer
42 views

Connecting to MS SQLServer from a Linux box

I am trying to connect to MS SQLServer from an application that I have written (using Qt) which runs on Linux. Here are some details of the setup: The SQLServer box (SQLBox) is part of my domain ...
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40 views

why am I getting an error with postgres and kerberos?

I am trying to install a web app that requires a postgres database, with a user and a password. Whenever I try to connect to the database, I get the following error: Cannot connect to database mydb: ...
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44 views

Can't get Google Chrome Kerberos authentication via GPO to work

I'm trying to provide Single Sign on into our Team Foundation Server environment throught Chrome, but I can't get it to work. I used the administrative templates for Chrome and enabled the following: ...
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76 views

Unauthorized attempt to view reports in SSRS

I have a problem in my environment with unauthorized attempt to access a report from my SQL Server Reporting Services. I have a IIS server with one website. Application Pool for this website is ...
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1answer
42 views

kinit worked but without kinit ssh doesn't work.

Case 1) machine: kinit machine: xxx@production.xxx.com's password: (inputted my password) machine: ssh machineB production.xxx.com Successfully sshd. Case 2) machine: ssh machineB ...
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1answer
75 views

How can I install kerberised services on debian?

I installed kerberos in my debian environment and made it work with SSH. I also would like to try it with other services but I could not install them on debian. I followed several tutorials e.g. ...
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250 views

Force mount.cifs to use specific kerberos ticket

TL;DR I want to force mount.cifs (or smbclient) to use specific ticket (e.g. cifs/server@DOMAIN2 instead of cifs/server@DOMAIN). Long Story I have two smb servers (both are windows): server-a and ...
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2answers
1k views

Samba Winbind not working in Debian 8

I am setting up a new samba environment based on Debian Jessie. Installation of PDC was succesfully and Windows clients were able to join. Have a problem at joining the Linux clients. I was following ...
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141 views

Why mapping a drive via IP leads to NTLM authentication instead of kerberos

Why does mapping a drive via IP leads to NTLM authentication instead of Kerberos? I thought Kerberos was more secure.
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2answers
917 views

Starting rpcgssd on CentOS 7

I'm running CentOS 7.0.1406, and have problems with NFSv4, authenticating using krb5p. Neither idmapd nor gssd would start automatically. I could fix the former by doing systemctl enable nfs-idmap. ...
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1answer
946 views

Is it OK to have kerberos-sec port open to the Internet in Mac OS X?

I’ve just bought my first Mac I want to connect it directly to the Internet in a colocation facility. Running nmap against it shows: Starting Nmap 6.40 ( http://nmap.org ) at 2015-02-18 21:54 GMT ...
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1answer
249 views

List of setspn service classes and their meanings

I am trying to set up my Java tomcat service to be authenticated using Kerberos (Negotiate SSO) in MS AD. For this it is necessary to create SPN. In the documentation of setspn on ...
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1answer
569 views

How to manually get a kerberos service ticket?

I've registred a SPN, now I want to try to get a ticket for it. I know there is linux kvno to do that is there an analog on windows?
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1answer
458 views

“kdb5_util create” fails with an error

krb5-server 1.10.3-33.el6 on CentOS 6.5. I'm following the Red Hat KDC Instructions. Right there at the start, the instructions give me /usr/sbin/kdb5_util create -s. If I run that, I get this: # ...
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3answers
215 views

Kerberos and LDAP complex relationship

I have problems understanding the relationship between LDAP and Kerberos (Conceptually). I understand LDAP as a directory service, and Kerberos as an authentication service. We also know that LDAP ...
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1answer
420 views

Kerberos failure emergency: need to filter a Wireshark capture to show only Kerberos and SPNEGO traffic

I am attempting to troubleshoot a serious Kerberos authentication problem on our SBS 2003 domain (none of our Windows 7 or XP workstations can authenticate). We have logged failed Kerberos ...
3
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1answer
541 views

Cross realm kerberos authentication with ssh

How can I configure server wide cross realm authentication on an openssh server using kerberos without having to add principles for both realms in the .k5login file?
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1answer
548 views

Configuring SASL with kerberos

This is my first time configuring SASL, and I am lost. I have a samba 4 as AD controller, and have installed kerberos. kinit is already succesful, but SASL cannot authenticate anything I have tried ...
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59 views

What goes on when using kinit with a keytab file

Wish to get more understanding on the use of kinit and keytab file. For example, if I already have a keytab file generated for a service ( the service registered to active directory by ktpass -mapuser ...
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106 views

Make ecryptfs work on kerberos secured nfs4-share

I have a working single-signe-on setup using Kerberos and openLDAP. I have setup NFS4 to use this infrastructure to control access to the shared folders. This works perfectly fine. The NFS4 sever ...
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863 views

Can't perform Kerberos login

I can't do a Kerberos login. I've tweaked rsyslog to record *.debug to /var/log/debug, whose output is below. If I attempt to log in with ssh, I get: Jun 6 23:13:05 foo-machine sshd[13965]: ...
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1answer
4k views

LSA (LsaSrv) “The security package Kerberos generated an exception. The exception information is the data.” caused by NPS

I have a Windows server (2008 R2 with SP1) that runs as a domain controller, and uses Network Policy Server to authenticate Wireless 802.1X devices. There are two access points available. Suddenly ...
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1answer
346 views

nslcd failing to come up in Lubuntu 14.04 Desktop

After installing Kerberos and LDAP via instructions from Ubuntu's Single Sign On instructions, modified a mite to fit my setup, I could manually sudo service nslcd start and then call getent passwd to ...
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1answer
2k views

How to install/enable ktpass.exe on Windows 7?

How can I install or enable the ktpass.exe utility on a Windows 7 workstation?
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1answer
338 views

For password protected Samba share on home network, ntlm vs ntlmv2 vs krb5 (kerberos)?

I have a home network with wifi that is password protected. On my home network, I have a file server with a password protected Samba share. The share itself is protected because my network has ...
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2answers
1k views

Kerberos Server and logs

I'm attempt to set up a Kerberos server, and am running into some sort of issue with the configuration message. Unfortunately, the daemon refuses to tell me what went wrong; it tells me to "see log ...
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1answer
1k views

Apache / Nginx - Reverse Proxy and Kerberos Constrained Delegation

I am after a solution to replace Microsoft TMG, and i am hoping there is an open source route of acomplishing. Currently using TMG we are reverse proxying Web resources say for example sharepoint, ...
3
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1answer
1k views

How can I enable Kerberos / GSSAPI authentication in Pidgin on Linux?

Some XMPP/Jabber servers (e.g. Openfire) support single-sign-on authentication using Kerberos. Pidgin claims to support this, but I was unable to find documentation on how to set it up.
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1answer
45 views

Is it possible to set an SPN with a path?

I'd like to know, if it is possible to set an SPN with non root url as something like that: setspn -U -A http/www.example.com/someApp/path/ someServiceUser So that different applications running in ...
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1answer
474 views

Does plink support GSSAPI?

Does plink support GSSAPI? I know putty itself does and enabling GSSAPI works fine with putty, but for some reason it is not working with plink. I was under impression that plink would work the same. ...
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416 views

Thousands of Logon/Logoff requests in Windows Event Viewer from a different computer on the same domain

For the past month or so, a computer that is on the same domain as me has been spamming my computer with logon/logoff requests via kerberos. I get ~4,000 requests on my computer a day. This includes ...
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1answer
375 views

sshfs with gssapi

For my normal login with ssh I have in my ~/.ssh/config the following lines: GSSAPIAuthentication yes GSSAPIDelegateCredentials yes ... so that if I call kinit and get a Kerberos ticket then I ...
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2k views

Time Machine over network using incorrect realm for kerberos authentication

Question: how can I influence the kerberos realm that Time Machine, or more specifically NetAuthSysAgent, uses? Time Machine backups over the network are failing on OS X 10.7 / 10.8 clients except ...
11
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1answer
878 views

Mount Mac OSX server NFS from Linux <krb5> LDAP?

I'm trying to mount an NFS share from Fedora 16. The server is Mac OS X Server, set up by my coworker. I believe it requires Kerberos/LDAP authentication, so I would start the (probably arduous) ...
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2answers
3k views

Google Chrome on Mac OS X with Kerberos

Is it possible to use Kerberized Websites with Google Chrome on Mac OS X?
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743 views

Kerberos events are not logged on Windows 7

I tried to configure Windows 7 machine with our web-server running on it to log Kerberos-related events (meaning Windows system Log). I followed these instructions: How to enable Kerberos event ...
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1answer
112 views

Why can I see two distinct /tmp dirs?

Problem I am seeing two different /tmp directories. In a plain GNOME terminal ls -lia /tmp gives the following: total 136 5797 drwxrwxrwt 36 root root 780 Oct 5 20:57 . 2 drwxr-xr-x 21 ...
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2answers
1k views

Active directory Kerberos OSX problems

I'll try to keep this short, but informative. I'm currently unable to bind OSX lion (10.7.4) machines to our AD. OSX kerberos (heimdal) is unable to locate the KDC service. However i can bind ...
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1answer
679 views

kinit gives me a Kerberos ticket, but no AFS token

I'm trying to setup access to my university's IT environment from my laptop running Ubuntu 12.04, by (mostly) following the IT-department's guides on AFS and Kerberos. I can get AFS working well ...