Re: ls hangs in internal-sftp for LDAP users

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On 2017-05-12T12:07, mh@xxxxxxx <mh@xxxxxxx> wrote:
> I'm using 7.2p2-4ubuntu2.1
> 
> I have the same exact problem as described in the first comment in
> https://bugzilla.mindrot.org/show_bug.cgi?id=1573
> 
> Initially, my ldap server hostname and IP is only in /etc/hosts, not in
> the configured resolver. I can't use the real IP as a workaround in
> ldap.conf because of the TLS configuration which cares about the hostname.
> 
> At the time I add the host name and IP in the resolver, the issue goes away.
> 
> So, I'm a bit worried to be forced to declare a record in my DNS to
> enable SFTP listing ? There should be another way isn't ?
> 
> I also tried to copy /etc/hosts to etc/hosts in the folder specified by
> ChrootDirectory directive with no more success.
> 
> Notice : it happens only for ldap users, not local users

There should be a /etc/nsswitch.conf in your chroot where you can
configure where users and hostnames should be looked up. E.g. to prevent
LDAP lookups altogether you could configure the respective two lines to
read:
passwd:		files
group:		files
i.e. drop the 'ldap' option there. To check why /etc/hosts isn't being
used you can look if hosts: has 'files dns' or just 'dns' altogether
behind it.

But in general I would recommend putting all your hostnames into DNS
properly, in my experience this avoids all kinds of headaches with all
kinds of software. And leave /etc/hosts as empty as possible, because
that always grows inconsistent over time.



Ciao,

Alexander Wuerstlein.
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