[Freeipa-users] stopping su -

[Erinn Looney-Triggs]

On 07/16/2012 01:32 PM, Steven Jones wrote:
> I have craeted a sshd rule only for the HBAC, but I find a std user can
> su - to root, is this correect behavior? 
> 
> How do I? or can I?  stop this unless explicitly allowed?
> 
> regards
> 
> Steven Jones
> 
> Technical Specialist - Linux RHCE
> 
> Victoria University, Wellington, NZ
> 
> 0064 4 463 6272
> 
> 
> 
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> Freeipa-users at redhat.com
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> 


You need to control this via PAM. So for me I restrict su to only be
allowed for members of the wheel group, from /etc/pam.d/su:

auth    required        pam_wheel.so    use_uid

There are comments in the file that will get you where you want to go.

-Erinn

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