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<H1>[Mageia-dev] SSH PAM configuration</H1>
<B>Anne Wilson</B>
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TITLE="[Mageia-dev] SSH PAM configuration">annew at kde.org
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<I>Mon Aug 13 10:39:07 CEST 2012</I>
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<PRE>-----BEGIN PGP SIGNED MESSAGE-----
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On 13/08/12 08:34, Guillaume Rousse wrote:
><i> Le 12/08/2012 21:57, David Walser a écrit :
</I>>><i> Johnny A. Solbu wrote:
</I>>>><i> On Sunday 12 August 2012 19:28, David Walser wrote:
</I>>>>><i> Through the PAM configuration for SSH shipped with the
</I>>>>><i> openssh-server package, root login is broken. Here's why.
</I>>>>><i> /etc/pam.d/sshd has: auth required pam_listfile.so item=user
</I>>>>><i> sense=deny file=/etc/ssh/denyusers
</I>>>>><i>
</I>>>>><i> The file /etc/ssh/denyusers has "root" in it by default.
</I>>>><i>
</I>>>><i> I read somewhere some time ago that PermitRootLogin in
</I>>>><i> sshd_config is ignored if PAM is used. That may be the reason
</I>>>><i> for this.
</I>>><i>
</I>>><i> Nope, I just tested it and that is not true.
</I>><i> There is an explicit comment in the configuration file: # Depending
</I>><i> on your PAM configuration, # PAM authentication via
</I>><i> ChallengeResponseAuthentication may bypass # the setting of
</I>><i> "PermitRootLogin without-password".
</I>><i>
</I>><i> My understanding is just than some specific PAM configuration
</I>><i> would eventually allow root user to authenticate through a
</I>><i> password, instead of a key.
</I>><i>
</I>><i> Regarding your original problem, feel free to commit the relevant
</I>><i> modifications.
</I>
Why would anyone need root login over ssh? I don't allow it on my
server and it has never caused me any problems. Su to root works
perfectly well and avoids the security risk, so I don't understand
this thread.
Anne
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