On 06/09/2019 13:20, Heidi Leerink - Duverger wrote:
> Hello Mark,
> That helps somewhat, my browser now shows the login page for our application, 
> BUT I do not get my username in HTTP variable REMOTE_USER but the principal 
> keytab related name.
> So instead of hduverge I get HTTP/nlsl-decadetst.u4agr.com@U$AGR.COM

The Tomcat Authenticator takes care of validating the user. In the
configuration you provided the JAASRealm is - effectively -
(re-)validating the contents of the keytab file. That is why you see the
keytab principal as the authenticated user.

Try replacing the JAASRealm with the AuthenticatedUserRealm. Something like:

  <Realm className="org.apache.catalina.realm.JAASRealm"

Note: This Realm should *only* be used with Authenticators like
org.apache.catalina.authenticator.SpnegoAuthenticator that authenticate
the user since this Realm simply takes the information provided and
assumes it is valid.


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