For RHEL 7, where do I find the the rpm "krb5-auth-dialog"

Hello,

I'm having some difficulties finding the above mentioned rpm in any RHEL 7 channel/repository.

According to the chapter 6.3 of the System Level Authentication Guide, it's a matter of a yum install.
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/pdf/System-Level_Authentication_Guide/Red_Hat_Enterprise_Linux-7-System-Level_Authentication_Guide-en-US.pdf

But what repository do I need to enable to have it available on the node?

Thanks in advance,