I added the line
auth required pam_wheel.so use_uid
to /etc/pam.d/su on SLES 11 ( x86_64) which works fine
*except * if you run
su -

Background: We need to restrict usage of su to certain users, which is
impossible if "su -" is not affected by above entry in /etc/pam.d/su.
Upgrading to a newer kernel is not possible at the moment because there
are issues with the current kernel and certain 10G NICs.

I tested the same configuration on a Fedora 15 ( x86_64)
where it worked as expected.

Any hints or workarounds are appreciated.


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