=== Packages Required ===
<sxh bash>
yum search sssd
</sxh>
<sxh bash>
yum install sssd.x86_64
</sxh>
Dependencies:
<sxh bash>
 sssd-krb5    x86_64   1.12.2-58.el7_1.18      updates     117 k
 sssd-krb5-common   x86_64   1.12.2-58.el7_1.18       updates     175 k

</sxh>
Now look for krb5 and use for next search
\\
<sxh bash>
yum search krb5 | grep workstation
</sxh>
<sxh bash>
yum install krb5-workstation.x86_64
</sxh>
\\
<sxh bash>
yum search gtk | grep auth
</sxh>
<sxh bash>
yum install authconfig-gtk.x86_64
</sxh>