A question about using KeyTab files to authenticate an Active Directory user to a Linux WEB Server (or any other App running on Linux) - kerberos

Can someone please help me with the following
Assume I have an AD Domain and a 'standalone Linux host' which is not joined to the AD domain and there is no trust relationship in place between the AD and Linux of any kind.
Next I have a Kerberos aware application running on the Linux Server (WEB Server for example or other app) which is .
In order to an AD user to authenticate to the Linux hosted WEB/App using a KeyTab file
(created in Windows and setup on Linux). Does the Linux host need to be AD-Joined, in order to keyTab (single sign one) authentication to work?
Meaning if the Linux server was never joined to any domain of any kind (standalone), Would I still be able to user a KeyTab file to authenticate a user coming in from an AD Domain?
Thanks all
Charlie

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