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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141 views

Samba authentication and LDAP

I have an OpenLDAP server that I use for authentication and authorization for various services. All users are of object type inetOrgPerson and my groups are groupOfNames. Now I want to configure ...
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128 views

Windows Authentication to a Remote Server within an Intranet Environment

I have several servers (all on the same DC) within an Intranet environment at my company. For simplicity, I'll focus my question on the IIS and SQL Servers. I have an IIS 7.5 web server and a remote ...
4
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0answers
313 views

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 ...
4
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455 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
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29 views

Use Kerberos ticket to access WebDAV

Using Apache's mod_dav as the server, Samba 4.1.17 as the server and any version of Windows from 7 upwards as the client how can I mount a WebDAV share using Kerberos for the authentication? ...
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120 views

CUPS remote print queues

In my network, there are multiple printers over many locations, all connected to a single CUPS server via whatever protocols they require. Client machines on the network need to print to the printers ...
2
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0answers
108 views

Samba Shares Without Using Winbind

I am curious if it is possible to use samba shares without using winbind. In our current environment we are using SSSD, Kerberos, and Samba to complete the required tasks such as joining the windows ...
2
votes
0answers
727 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 ...
2
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50 views

Keberos clock skrew, although the clocks are synchronized

We have an issue during a backup (run every night). This backup is managed by Veeam Backup&Replication : copy 7 virtual machines from one VMware ESXi host. This host is linked to a vCenter server. ...
2
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0answers
260 views

How Does an Exchange Alternative Service Account Credential work?

I recently had to assist with setting up an Exchange Alternative Service Account (ASA) credential on an Exchange CAS array. We did get the ASA working properly however I have some questions about how ...
2
votes
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1k views

Windows 7 NFS Client Using Kerberos and Linux KDC

I am trying to configure a Windows 7 Enterprise client to mount a NFSv4 share on a Linux NFS server using Kerberos and a Linux KDC. The setup is: IPA Server (OS: Scientific Linux 6.4, Pkg: ...
2
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435 views

Authentization agains Samba4 domain controler and not working kinit

I've a problem with Samba 4 and Kerberos. If I call kinit, it writes Client not found in Kerberos database while getting initial credentials. I find out, that the Kerberos works with user name only, ...
2
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3k views

Synology DSM4.3 with Kerberos and NFSv4

According to the press releases of Synology DSM4.3 can do NFSv4 and Kerberos. Actually, in the Tab with NFS settings, there is a button for Kerberos settings. But I cannot find any guidance anywhere. ...
2
votes
0answers
446 views

issue with heimdal kerberos in ldap backend

I'm having a bit of trouble getting Kerberos (Heimdal version) to work nicely with OpenLDAP. The kerberos database is being stored in LDAP itself. The KDC uses SASL EXTERNAL authentication as root to ...
2
votes
0answers
767 views

Grant Kerberos Constrained Delegation to SQL Server 2012 running as Managed Service Account

I can't see how to grant Kerberos Constrained Delegation for a service identified by a Managed Service Account. I have a Windows 2008 R2 functional level single domain single forest, two 2008 R2 SP1 ...
2
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0answers
677 views

Autofs always uses uid 0 when mounting

We have some Ubuntu clients here which shall mount kerberos protected NFS homes. The server works nicely with the existing clients, so we can assume that ldap and kerberos are ok. We managed to ...
2
votes
0answers
348 views

NFSv4 ACLS vs NFSv3 KRB5 - problems - alternatives?

So NFSv4 acls don't ignore the umask as far as I can tell. And nfsv3 with kerberos has its own host of problems (with autofs - race conditions with pam). So if we want to use an nfs like system with ...
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4 views

Open Directory Password Change Issues on OS X Server 10.10

I'm having a problem with 50+ workstations (10.9 and 10.10) when a user changes their OD password (either at the OS X login screen or the System Preferences). The password change updates on the ...
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0answers
32 views

Obtain Kerberos ticket automatically (on boot) in CentOS 7?

I'm using Ansible to administer a group of Windows servers, with my control machine running CentOS 7.1. I've set up my /etc/krb5.conf file to authenticate to a domain controller so I can use one ...
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0answers
94 views

JBoss SPNEGO Authentication Renewing Server Kerberos Tickets

We have successfully configured SPNEGO with our webapp on JBoss EAP 6.2, Windows Server 2008, and IE10 using JBoss Negotiation. What is best operational practice for renewing the ticket issued to ...
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0answers
66 views

Kerberos Errors

Need help with the below error. I haven't been able to find much that has helped. Event Source: Security-Kerberos Event ID: 4 Qualifiers: 16384 Version: 0 Level: 2 Task: 0 Opcode: 0 Keywords: ...
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239 views

IIS 8.5 / Windows Authentication - 401 response on certain clients

We are running a Tomcat application behind a IIS 8.5 Windows Authentication Proxy, the redirect is via the tomcat AJP connector. We now have the problem that on certain clients, the authentication ...
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0answers
28 views

Kerberized root user on RHEL 5/6

I'm currently involved with getting NFSv4 and Kerberos. We've decided to bite the bullet and try and make the transition. Our environment is: Windows AD LDAP auth on Linux against said AD. ...
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27 views

Setting environment variables based on passing Require directive

I finally succeed on configuring Apache as a SPNEGO reverse proxy for my app, and I'm using the AUTHORIZE_SAMACCOUNTNAME, AUTHORIZE_CN and AUTHORIZE_MAIL to figure out some information about the ...
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0answers
16 views

Kerberized NFSv4 share (deleted) after token expiry

I set up a NFSv4 server with Kerberos authentication and it runs well. However, some users stay logged in for long times such that they have to renew their tickets after some days. If during the time ...
1
vote
0answers
69 views

How can one determine what Kerberos key encryption algorithms are supported on a Cisco IOS device?

When attempting to load an SRVTAB over TFTP, I receive an "Unsupported keytype" error: abc(config)#kerberos srvtab remote 1.2.3.4 abc.srvtab Loading abc.srvtab from 1.2.3.4 (via Vlan123): ! [OK - 121 ...
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335 views

Cross-Realm trust verify failed with 'netdom' command

Question 1: Am having my ActiveDirectory in Windowsserver 2012 machine - its domain name is AD-DEMO.LOCAL Kerberos admin-server is in another Ubuntu machine - its realm KERBEROS.COM Added trust in ...
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160 views

Setting up SPN for SSRS in a CRM load balance environment

I'm getting this exception randomly in a CRM load balance LIVE environment when running Reports from CRM. System.ServiceModel.Security.SecurityNegotiationException: A call to SSPI failed, see inner ...
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0answers
69 views

pwauth kerberos authentication specifying default and secondary servers

I am currently using Kerberos authentication for Basic Authentication on Apache using pwauth and mod_auth_external. I would like to add multiple servers to authenticate from, however they would have ...
1
vote
0answers
232 views

GSSAPITrustDns option missing from OpenSSH-6.7

I need to use the GSSAPITrustDns option to connect to a round robin service using Kerberos authentication. This works correctly using OpenSSH 5.3 and 6.6.1p1 on a selection of machines. I have an Arch ...
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0answers
59 views

Apache auth_kerb_module on Windows

I need to install the Kerberos module in Apache on Windows. I have copied the file auth_kerb_mod.so to apache/modules/ and I have modified the conf/httpd.conf with LoadModule auth_kerb_module ...
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341 views

Postfix + Saslauthd + Kerberos 5 + CentOS 7 not working

I've almost got saslauthd checking against Kerberos but seeing some last issues on CentOS 7. When postfix talks to saslauthd, it sends a lowercased domain and it's not corrected. I tried to fix things ...
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0answers
915 views

Kerberos Configuration Manager for SQL Server error “unable to access user principal information from the system”

When I launch the Kerberos Configuration Manager for SQL Server and try to connect to the local machine it's on, I am getting the error "Kerberos Configuration Manager for SQL Server error "unable to ...
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0answers
57 views

kerberos apache 401 error for domain admins using office addin

I use SSO for access to a Linux based system from our windows 7 PC's. This works for IE using the logon credentials to access the system. However, when the developed office plugin is used by any ...
1
vote
0answers
100 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
0answers
190 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
0answers
59 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 ...
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vote
0answers
133 views

Why does MIT Kerberos kinit warn “Your passwod will expire” when your principal is what is about to expire?

While doing some experimenting I noticed that the MIT Kerberos version 5 "kinit" program will warn you when either your password is about to expire (within 7 days) or when your principal is about to ...
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vote
0answers
2k views

Why is my OSX client having so much trouble connecting to our SMB server?

I'm asking this here because I think I'm more likely to find SMB/kerberos experts here than in Ask Different, which seems to be mostly related to OSX client issues. When I first connect to our SMB ...
1
vote
0answers
92 views

Connect an LDAP realm with an AD domain, with the same name?

The situation is a separate group has created an LDAP domain. We'll call it foo.bar. (fyi, none of these are connected in any way to the Internet) They also have a Windows domain and renamed it to ...
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vote
0answers
716 views

Encounter an error when configuer secure hadoop : org.apache.hadoop.security.AccessControlException

I try to configure secure hadoop with kerberos. I have started KDC server , generated and copy related keytab to corresponding node. kerberos can work normally (use kinit) but when i try to start ...
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vote
0answers
281 views

Integrating Kerberos authentication on Apache with a Git server

First time asking a question here so I hope I'm in the right place to do so. I've also searched for similar problems on here, but couldn't find anything quite as similar. Here's my problem. We ...
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vote
0answers
1k views

Mysterious kinit-failure on Debian Jessie

I have a machine with the Samba 4 AD and the second as a client. After two days of good operation, suddenly the kinit stopped working on the client-side. The reason is quite mysterious. It cannot ...
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vote
0answers
361 views

heimdal error Decrypt integrity check failed for checksum type

when I try to authentication with heimdal-kdc ,I get this error in kdc log : (enctype aes256-cts-hmac-sha1-96) error Decrypt integrity check failed for checksum type hmac-sha1-96-aes256, key type ...
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0answers
244 views

Alfresco with Kerberos: Error creating bean with name globalAuthenticationFilter

I configured Alfresco 4.2.c to work with MIT Kerberos, following the documentation. Because the documentation is only for Active Directory, I adapted some part to Kerberos by reading the forum. Upon ...
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vote
0answers
313 views

Problems with kvno + Consultation with kerberos authentication settings

I have clearly identified a problem that I can not solve. I suspect I'm missing something when setting the service running on Centos 6 on Windows Server 2003. First I tell the environment that I'm ...
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vote
0answers
2k views

Server not found in Kerberos database while getting credentials for imap

When running kvno imap/prueba-mail.ejemplo.org@EJEMPLO.ORG get the following error: kvno: Server not found in Kerberos database while getting credentials for imap/prueba-mail.ejemplo.org@EJEMPLO.ORG ...
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vote
0answers
99 views

Kerberos Single Sign On

I am trying to implement Single Sign On using kerberos with ssh. I changed the below files and restarted the ssh daemon. /etc/ssh_config GSSAPIAuthentication yes GSSAPIDelegateCredentials yes ...
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0answers
149 views

Kerberos with AuthnProviderAlias

I was configuring some AuthnProviderAliases today and I want to add kerberos to it. The problem is that when I added kerberos apache wouldn't restart and I got the following error in my syslog: ...
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494 views

IIS7, Kerberos, sometimes no response from browser to 401

SharePoint 2010 hosted on IIS7, Kerberos enabled. Clients log on through Citrix on several terminal servers. Kerberos is working on several clients, so SPN's are defined correctly, but on some clients ...