What's Delegation means?

Dear Experts,

Could anyone can explain to me in simple words " What is a Delegation means ? ". What's its purpose.?Administration Central
Thanks
Shamz
LVL 1
Shamil MohamedIT Infrastructure Engineer/IT Systems ManagerAsked:
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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
Delegation is used in AD to impersonate and it is also used by Kerberos.  I think you might understand it better if we use an example.  Lets say user is on PC1 and connects to web server IIS1 which needs to bring in data from SQL1 where only user logged on PC1 has access to.  As you can see, this is not possible under normal circumstances because User1 never logged on to the console on IIS1.  To achieve this, delegation is used where SQL1 will return data for User1 logged on PC1 even though IIS1 because it trusts IIS1 to impersonate User1.  This is done token passing in Kerberos.  Refer to link below:

http://blogs.msdn.com/b/autz_auth_stuff/archive/2011/05/03/kerberos-delegation.aspx
http://windowsitpro.com/windows/most-confusing-dialog-box-active-directory
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Md. MojahidCommented:
Another great feature of Server 2008, is how the Delegation of Control Wizard simplifies adding rights for common tasks to groups or administrators.

We’re going to say that we’ve just started building our network, and we’d like to give our Helpdesk admins the ability to reset passwords for people. Since we don’t want the Helpdesk modifying other parts of our domain, we want to restrict their access rights to only that task, for the time being. The simplest way is to use the Delegation of Control Wizard, so we’ll start by going to our Administrative Tools and opening the Active Directory Users and Computers snap-in. Once we expand our domain, we’ll go down to the OU that holds our Helpdesk group, right-click on it, and choose Delegate Control.

http://www.howtogeek.com/50166/using-the-delegation-of-control-wizard-to-assign-permissions-in-server-2008/
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