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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65 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 ...
3
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49 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 ...
3
votes
0answers
261 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 ...
3
votes
0answers
391 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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0answers
113 views

Kerberos KDC has no support for encryption type while getting credentials

I am configuring an apache/SSO authentication with an AD with Kerberos. My http server is a Debian Wheezy and the AD is a Windows Server 2012. I generated keytabs files on WS2012 with kpass command ...
2
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96 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
votes
0answers
103 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
600 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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0answers
48 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
votes
0answers
179 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
0answers
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
votes
0answers
393 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
votes
0answers
2k 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
421 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
727 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
votes
0answers
641 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 ...
1
vote
0answers
3 views

how can I restrict kerberos service tickets by group?

I have multiple Linux servers all configured to allow kerberos authentication with active directory. All other user and group attributes reside in a separate directory server (389). I am able to log ...
1
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0answers
11 views

kadmind error - krb5_recvauth: start_seq_get is not supported in the HDBGET keytab type

I'm trying to migrate a heimdal KDC with an OpenLDAP backend from a Debian 5.x server (heimdal 1.2.dfsg.1-2.1) to a Ubuntu 14.04 server (heimdal 1.6~git20131207+dfsg-1ubuntu1.1), and am running into ...
1
vote
0answers
36 views

Changing login-formats for Linux and Active Directory

On CentOS, I run realm list and see login-formats: %U@mydomain.local I'd like to change login-formats: %U@mydomain.local to login-formats: %U How would I go about doing this? I'm assuming there is a ...
1
vote
0answers
35 views

Nagios Apache publishing

I am deploying a NagiosXI server (CentOS 6.6) and I would like to publish the site externally to allow team members to use the mobile app without the need for a VPN client. I have worked out the ...
1
vote
0answers
72 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 ...
1
vote
0answers
56 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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vote
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206 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 ...
1
vote
0answers
20 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. ...
1
vote
0answers
23 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 ...
1
vote
0answers
14 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
62 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 ...
1
vote
0answers
249 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 ...
1
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0answers
137 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 ...
1
vote
0answers
56 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
192 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 ...
1
vote
0answers
50 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 ...
1
vote
0answers
273 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 ...
1
vote
0answers
720 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 ...
1
vote
0answers
55 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
166 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
56 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 ...
1
vote
0answers
198 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 ...
1
vote
0answers
111 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 ...
1
vote
0answers
1k 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
82 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 ...
1
vote
0answers
647 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 ...
1
vote
0answers
261 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
967 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 ...
1
vote
0answers
325 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 ...
1
vote
0answers
227 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
297 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 ...
1
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 ...
1
vote
0answers
92 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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136 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: ...