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I was following the instructions to install Samba from their website, and it said I needed to install the package krb5-user. So I typed:

sudo apt-get install krb5-user

It started installing, and then this popped up:

enter image description here

What am I supposed to enter in there?

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up vote 3 down vote accepted

You can enter anything you like. As, unless you've previously set up a Kerberos KDC, you won't be using Kerberos/GSSAPI auth with Samba, it won't affect your system.

If you have your own domain, I suggest putting its upper-case version there. Otherwise, you can safely leave it blank.

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