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Use of Kerberos unreliable, can I force it?


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Guest NoelByron@gmx.net
Posted

Hi!

 

I had to learn that it is easily possible for clients in our network

to work without Kerberos (tickets). Mostly because they boot their

computer without a network connection. Those users have no Kerberos

tickets (of course) but they don’t get Kerberos tickets even after

connection to our network (bug or feature?). There are also some other

scenarios in which Windows relinquishes Kerberos. The problem is that

we have some web applications that require a Kerberos ticket.

 

My question: How can I switch on Kerberos as soon as they connect to

the network? Or how can I force Kerberos authentication in a web

application (SharePoint). Integrated Windows Authentication means NTLM

or Kerberos…

 

Tips would be highly appreciated. Thanks in advance!

 

Best regards,

Noel

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Guest S. Pidgorny
Posted

You can't. We have been asking this of Microsoft for quite a while now.

 

As to the users not getting tickets after connecting to the network, that is

a problem. Maybe related to your configuration but also can be caused by a

bug - there are quite a few KB articles and hotfixes for Kerberos.

 

--

Svyatoslav Pidgorny, MS MVP - Security, MCSE

-= F1 is the key =-

 

http://sl.mvps.org http://msmvps.com/blogs/sp

 

<NoelByron@gmx.net> wrote in message

news:9df4479f-db82-45ab-9eed-4c81f7b6ea4b@56g2000hsm.googlegroups.com...

Hi!

 

I had to learn that it is easily possible for clients in our network

to work without Kerberos (tickets). Mostly because they boot their

computer without a network connection. Those users have no Kerberos

tickets (of course) but they don’t get Kerberos tickets even after

connection to our network (bug or feature?). There are also some other

scenarios in which Windows relinquishes Kerberos. The problem is that

we have some web applications that require a Kerberos ticket.

 

My question: How can I switch on Kerberos as soon as they connect to

the network? Or how can I force Kerberos authentication in a web

application (SharePoint). Integrated Windows Authentication means NTLM

or Kerberos…

 

Tips would be highly appreciated. Thanks in advance!

 

Best regards,

Noel

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