January 22, 2002 at 1:42 pm
I have two servers ser1,ser2. I linked ser2 to ser1. I mapped sql logins it worked fine. But I have a NT Trusted Login accouts\vishal In both the servers with sysadmin permissions. I mapped this login to ser2 by checking Impersonate checkbox. How can map same NT login names in linked servers.
January 22, 2002 at 1:56 pm
If I'm understanding your question right, you have the following situation:
Ser1 linked to Ser2.
Impersonate authentication.
Using NT authentication.
And you are seeing a failure.
Are you trying to access the linked server from a third computer, like a client workstation? Say:
Client
|
\/
Ser1
|
\/
Ser2
If so, this is not allowed. This is what is known as a "double hop" which is prohibited for NT authentication. We not only see this with linked servers, but in any environment where we are trying to pass through NT credentials. I know this was done for security reasons and is rather frustrating for those of us trying to implement solutions.
Here's a Microsoft Knowledge Base article which describes the details with regards to SQL Server:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q238477
If this isn't the issue, could you post the exact error?
K. Brian Kelley
http://qa.sqlservercentral.com/columnists/bkelley/
K. Brian Kelley
@kbriankelley
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