samba - Jun 2021 - Logging into Linux from Domain-joined Win10 desktop works for hostnames, not VIPs

Hi Rowland,

You are 100% right and perhaps what I am seeing in only sssd stuff. I've 
been able to locate a BZ (#1) talking about something similar so perhaps I
only need to 'net ads keytab add' on the Linux hosts.

Sorry for the noise,

#1: https://bugzilla.redhat.com/show_bug.cgi?id=1529301

Vincent

On Sat, 5 Jun 2021, Rowland penny via samba wrote:
> On 05/06/2021 20:56, Vincent S. Cojot via samba wrote:
>>
>>  Hi All,
>>
>>  I've observed some strange thing and I know too little about
Windows to
>>  figure out what's going on so I would love it if someone could
shed some
>>  light..
>>
>>  Here's the thing:
>>
>>  From a win10 desktop, I PuTTY ssh to a server if I use PuTTY with the
>>  remote server's hostname but if I use a VIP hosted on the same
server, my
>>  user gets prompted for a UNIX password (I'm not using SSH keys in
this
>>  environment, only plain AD with bind).
>>
>>  In more detail:
>>  my RHEL servers are joined to the domain using this:
>>
>>  # realm list
>>  ad.lasthome.solace.krynn
>>  ?type: kerberos
>>  ?realm-name: AD.LASTHOME.SOLACE.KRYNN
>>  ?domain-name: ad.lasthome.solace.krynn
>>  ?configured: kerberos-member
>>  ?server-software: active-directory
>>  ?client-software: sssd
>>  ?required-package: oddjob
>>  ?required-package: oddjob-mkhomedir
>>  ?required-package: sssd
>>  ?required-package: adcli
>>  ?required-package: samba-common-tools
>>  ?login-formats: %U
>>  ?login-policy: allow-realm-logins
>>
>>  From any Windows10 desktop in the home, I can PuTTY without a password
>>  prompt to <hostname1.lasthome.solace.krynn>.
>>
>>  If I try to PuTTY to <floating1.lasthome.solace.krynn>, my user
gets
>>  prompted for its password.
>>
>>  Any ideas? I'm just stumped.. (I don't use Win10 but some of
my children
>>  do and one has a need to ssh from it to a Linux box).
>>
>>  Thank you,
>>
>>  Vincent
>> 
>
> you appear to be trying to connect to
'floating1.lasthome.solace.krynn' but
> your AD dns domain appears to be 'ad.lasthome.solace.krynn', so of
course you
> are going to get asked for a password.
>
> Can I ask where Samba comes into this ? If there are shares involved and
the
> Samba version is >= 4.8.0, then you shouldn't be using sssd etc, but
if you
> just want authentication, then you don't need Samba, you can just use
sssd.
>
> Rowland
>
>
>
> -- 
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
>
>

Also,

I just tested this and it's entirely similar:

  I can PuTTY without a password prompt to 
<hostname1.lasthome.solace.krynn> or
<hostname1.ad.lasthome.solace.krynn>

If I try to PuTTY to <floating1.lasthome.solace.krynn>, or 
<floating1.ad.lasthome.solace.krynn> it prompts for a password.

The servers are running RHEL8.4.

I probably need to run 'net ads keytab <something>' so I'll be
trying to
figure out the 'something' part.. :)

Sorry again for the noise,

Vincent


On Sat, 5 Jun 2021, Vincent S. Cojot via samba wrote:
>
> Hi Rowland,
>
> You are 100% right and perhaps what I am seeing in only sssd stuff.
I've been
> able to locate a BZ (#1) talking about something similar so perhaps I
> only need to 'net ads keytab add' on the Linux hosts.
>
> Sorry for the noise,
>
> #1: https://bugzilla.redhat.com/show_bug.cgi?id=1529301
>
> Vincent
>
> On Sat, 5 Jun 2021, Rowland penny via samba wrote:
>
>>  On 05/06/2021 20:56, Vincent S. Cojot via samba wrote:
>>>
>>>   Hi All,
>>>
>>>   I've observed some strange thing and I know too little about
Windows to
>>>   figure out what's going on so I would love it if someone
could shed some
>>>   light..
>>>
>>>   Here's the thing:
>>>
>>>   From a win10 desktop, I PuTTY ssh to a server if I use PuTTY with
the
>>>   remote server's hostname but if I use a VIP hosted on the
same server,
>>>   my
>>>   user gets prompted for a UNIX password (I'm not using SSH
keys in this
>>>   environment, only plain AD with bind).
>>>
>>>   In more detail:
>>>   my RHEL servers are joined to the domain using this:
>>>
>>>   # realm list
>>>   ad.lasthome.solace.krynn
>>>   ?type: kerberos
>>>   ?realm-name: AD.LASTHOME.SOLACE.KRYNN
>>>   ?domain-name: ad.lasthome.solace.krynn
>>>   ?configured: kerberos-member
>>>   ?server-software: active-directory
>>>   ?client-software: sssd
>>>   ?required-package: oddjob
>>>   ?required-package: oddjob-mkhomedir
>>>   ?required-package: sssd
>>>   ?required-package: adcli
>>>   ?required-package: samba-common-tools
>>>   ?login-formats: %U
>>>   ?login-policy: allow-realm-logins
>>>
>>>   From any Windows10 desktop in the home, I can PuTTY without a
password
>>>   prompt to <hostname1.lasthome.solace.krynn>.
>>>
>>>   If I try to PuTTY to <floating1.lasthome.solace.krynn>, my
user gets
>>>   prompted for its password.
>>>
>>>   Any ideas? I'm just stumped.. (I don't use Win10 but some
of my children
>>>   do and one has a need to ssh from it to a Linux box).
>>>
>>>   Thank you,
>>>
>>>   Vincent
>>> 
>>
>>  you appear to be trying to connect to
'floating1.lasthome.solace.krynn'
>>  but your AD dns domain appears to be
'ad.lasthome.solace.krynn', so of
>>  course you are going to get asked for a password.
>>
>>  Can I ask where Samba comes into this ? If there are shares involved
and
>>  the Samba version is >= 4.8.0, then you shouldn't be using sssd
etc, but
>>  if you just want authentication, then you don't need Samba, you
can just
>>  use sssd.
>>
>>  Rowland
>> 
>> 
>>
>>  --
>>  To unsubscribe from this list go to the following URL and read the
>>  instructions:  https://lists.samba.org/mailman/options/samba
>> 
>> 
> -- 
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
>