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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586 views

IIS / kerberos not prompting for credentials from Mac clients

I have an IIS server (Server 2008R2/IIS 7.5) configured for kerberos authentication. The kerberos authentication works from clients on Windows (IE and Opera both tested), but when I access the site ...
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9 views

Windows Interoperable Kerberos V5 Realm tcp KDC

I have a Windows 7 client that cannot reach a mit-krb5 KDC due to a firewall beyond my control. More specifically the client can reach the KDC, but the KDC's udp response does not make it back to the ...
2
votes
1answer
13 views

Kerberos-PAM authentication failure: pam or pre-authentication

kinit -p 'username' works -- no problem with the setup of the Kerberos realm. I can't get the login from the GUI to work, however. Client auth.log: pam_krb5(gdm3:auth): user <username> ...
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0answers
10 views

SSH from Windows to Linux with certificates generated by a central PKI stored in AD

I would like to have a central PKI where certificates are issued for all sorts of services and devices as well as users. I would like to push these certificates to one or more active directories. (so ...
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0answers
9 views

Apache+subversion Kerberos Authorization Active Directory

I have configured Apache+Subversion with Kerberos. Here's my config: SSLRequireSSL DAV svn SVNPATH /var/www/svn/testrepo AuthType Kerberos Krb5KeyTab /etc/krb5.keytab KrbAuthRelams ...
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votes
1answer
10 views

Lightweight webserver with SSPI authentification [on hold]

I'm looking for a fast, lightweight web server (for example nginx or lighttpd) which supports authentication to a Microsoft Kerberos authentication server (SSPI). This webserver must run under Windows ...
2
votes
1answer
745 views

How to enable Kerberos Authentication Service auditing on 2008 server

I have a 2008-level Windows domain running 5 x 2008 (non-R2) DCs (it's on the roadmap to migrate to R2 or possibly 2012 in the next 9-12 months, but this project needs to be working first), and I need ...
1
vote
1answer
726 views

Can't get postgres and kerberos (gss) working together

I am trying to get postgres and kerberos, via GSSAPI, working together. Having trouble at this point. It does not help that I am really a newbie for both technologies. I have both postgres and ...
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0answers
23 views

How can I use LDAP and Kerberos for web auth only, not server auth

I have read this question on proper kerberos integration and this question on enterprise authentication, neither are helpful to me at this point in time though they did provide some good background. ...
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votes
1answer
1k views

Lookup Active Directory entry by implicit UPN

In our company exists a forest-wide UPN suffix company.com and almost all user accounts have the explicit UPN set to fistname.lastname@company.com. This value is also set in the Active Directory ...
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2answers
760 views

Windows Server 2003 -Ktpass - crypto: enum value 'rc4-hmac' is not known

I'm trying to create a keytab with Ktpass on a Windows Server 2003 with: Ktpass -princ host/prueba-mail.ejemplo.org@EJEMPLO.ORG -mapuser host -pass password -crypto rc4-hmac -out UNIXhost.keytab I ...
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13 views

Enabling constrained delegation on DC computer account

Is it necessary to have constrained delegation enabled on Microsoft AD domain controller computer account? If yes then why and what are consequences of disabling it? I'm mainly interested in current ...
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0answers
68 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 ...
2
votes
1answer
2k views

SSO with Apache and Kerberos issues

I am trying to set up SSO on my Apache web server using Kerberos so that users logged into the local domain are recognised and logged in immediately. I have followed this guide to the letter but I ...
0
votes
1answer
33 views

389 Directory Server - Multiple Domains

I have multiple business that i would like to authenticate to a single server for SSO. I am using 389 directory server and have already split each domain into it's own respective OU. I would like to ...
0
votes
2answers
2k 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 ...
2
votes
2answers
143 views

Apache 2.2.14 / mod_auth_kerb 5.4 : Custom krb5.conf for Apache Instance

Objective: Use Apache/mod_auth_kerb using a custom krb5.conf file, not system standard /etc/krb5.conf. Issue: I've got a strongly regimented environment where we application owners are able to ...
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0answers
280 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 ...
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0answers
16 views

IIS 6.0 reverting to NTLM authorization

This is related to my other question here. We have a .net 2.0 app hosted in IIS 6 on two different servers (the second server was setup to troubleshoot this issue) these servers are on two different ...
1
vote
1answer
946 views

Apache Kerberos/LDAP: A required input parameter could not be read: An invalid name was supplied (, Unknown error)

(Debian Squeeze) I have Apache authenticating via Kerberos - that works fine. Now I want to restrict the site to a single group only, so I need to add LDAP authorization. I enabled authnz_ldap and ...
2
votes
1answer
52 views

Kerberos token size error

I am having issues with a .net 2.0 web app hosted on a windows 2003 server authenticating with a java app (on linux I think). The java server is expecting Kerberos authentication and currently fails ...
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0answers
16 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 ...
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vote
1answer
1k views

DCOM Authentication Fails to use Kerberos, Falls back to NTLM

I have a webservice that is written in Classic ASP. In this web service it attempts to create a VirtualServer.Application object on another server via DCOM. This fails with Permission Denied. However ...
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votes
1answer
1k views

AD + Postfix + Dovecot problems with query_filter

I set up a mail server AD + Postfix + Dovecot + Kerberos This works fine for only one domain In the attribute mail=test@test.com, in otherMailbox=vasya@otherdoamin.com,petya@another.net Config ...
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vote
2answers
808 views

Problem with testsaslauthd and kerberos5 (“saslauthd internal error”)

The error message “saslauthd internal error” seems like a catch-all for saslauthd, so I’m not sure if it’s a red herring, but here’s the brief description of my problem: This Kerberos command works ...
3
votes
0answers
56 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 ...
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votes
0answers
62 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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0answers
15 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
21 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
votes
1answer
1k views

winbindd: kinit succeeded but ads_sasl_spnego_krb5_bind failed: Cannot contact any KDC for requested realm

While looking for reasons why logging in to a samba machines joined to Active Directory is slow I have the strong impression that the following error in my log file could be a hint. Apr 3 14:44:14 ...
0
votes
1answer
26 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 ...
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votes
0answers
31 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 ...
0
votes
1answer
30 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
90 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), ...
10
votes
2answers
3k views

Can someone please explain Windows Service Principle Names (SPNs) without oversimplifying?

I have wrestled with service principle names a few times now and the Microsoft explanation is just not sufficient. I am configuring an IIS application to work on our domain and it looks like some of ...
0
votes
1answer
113 views

Is it possible to securely add an NFSv4 share to an ESXi Server?

I just wondered how to connect an NFSv4 share as storage extension to my ESXi. Since NFSv4 supports Kerberos, ESXi could use Username and Password to connect to the share, while no one else could ...
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vote
2answers
70 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
votes
1answer
43 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
votes
2answers
28 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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votes
0answers
93 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 ...
1
vote
1answer
49 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 ...
0
votes
2answers
533 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 ...
2
votes
1answer
2k views

SSH instant logout after ssh login kerberos / winbind

I set up a ubuntu server which is authenticating against the active directory of our W2k8 Domain. Everything went well and I see all the users in getent passwd, and wbinfo. I want to be able to use ...
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0answers
238 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 ...
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vote
1answer
128 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. ...
2
votes
1answer
924 views

./configure error installing PHP with Kerberos support on Ubuntu

I am trying to install PHP on Ubuntu 11.04. I am compiling from source. Here are my installation dependencies: apt-get -y install php5-dev php-pear apt-get -y install libxml2-dev libevent-dev ...
0
votes
1answer
118 views

Sudden catastrophic failure of kerberos

I've been playing with my openAFS setup, and adding keys for the afs principle for kerberos. Now, suddenly, Kerberos has gone down (or something). Kadmin gives the following error: kadmin -p admin ...
2
votes
1answer
994 views

Why is Kerberos security failing for our ADFS proxy server?

We have a WCF service that uses active federation to authenticate callers via AD FS 2.0 and it's working fine internally. Now we want to expose it to the outside world, so our server team set up a ...
0
votes
0answers
66 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 ...
0
votes
0answers
1k views

krb5kdc: cannot initialize realm MYDOMAIN

On an out-of-the-box Turnkey Linux Domain Controller, I ran apt-get install krb5-admin-server, and while it ran fine, except for this error (warning?) in the middle of the execution: Setting up ...