[Samba] Workgroup Domain

[Dominic Robinson]

Thanks Denis,

I wasn't aware that workgroup was actually called netbios domain names -
this led me here
https://wiki.samba.org/index.php/Active_Directory_Naming_FAQ#NetBIOS_Domain_Naming
which categorically says do not use punctuation in it.

Kind Regards,
Dominic

On 31 August 2017 at 19:05, Denis Cardon <dcardon at tranquil.it> wrote:

> Hi Dominic,
>
>>
>> Wondering if anyone can help with a weird issue I'm having -
>>
>> Just set up a new server (RHEL 7.4) and have migrated my samba
>> configuration from my old server (Fedora 25), I'm experiencing an issue
>> where by if my the name of my workgroup a domain i.e. it has a period in
>> it, then none of my Linux clients can detect the broadcast and smbtree on
>> both client and server is completely empty. I can manually connect via
>> domain, hostname, ip etc...
>>
>
> from [1] : "[NetBIOS domain] names can contain a period (.). However, the
> name cannot start with a period. The use of non-DNS names with periods is
> allowed in Microsoft Windows NT. However, periods should not be used in
> Active Directory domains. If you are upgrading a domain whose NetBIOS name
> contains a period, change the name by migrating the domain to a new domain
> structure. *Do not use periods in new NetBIOS domain names*."
>
>
> So, if MS tells you specifically "Do not use", then I'd say it may be
> logic to not use it with Samba either... I've done quite a few NT4 to Samba
> AD migration which had dotted netbios domain name in the past, I know it
> does mostly work, but it is really not a good idea. It prevents standard
> migration path to AD, and you'll have some subtle bugs to deals with.
>
> Cheers,
>
> Denis
>
>
> [1] https://support.microsoft.com/en-us/help/909264/naming-conve
> ntions-in-active-directory-for-computers-domains-sites-and
>
>
>
>> If I take this further and run smbtree -d4, then I can see that it's
>> complaining about not being able to determine the master browser for
>> WORKGROUP.COM <http://workgroup.com/>. In Windows however everything
>> works
>>
>> fine, the server pops up almost instantaneously.
>>
>> The domain is propagated through dns and all clients can resolve the
>> domain
>> name no problem. If I change the samba workgroup to something that isn't a
>> domain name, then everything works again and it's correctly displaying in
>> smbtree on all clients and server.
>>
>> I don't get it - can someone advise?
>>
>> smb.conf:
>> [global]
>>  server string = host01-name01
>>  workgroup = workgroup.com
>>  netbios name = host01-name01
>>  bind interfaces only = yes
>>  interfaces = lo enp4s0 enp0s31f6
>>  hosts allow = 192.168.150.
>>  name resolve order = wins bcast
>>  security = user
>>  passdb backend = tdbsam
>>  encrypt passwords = true
>>  domain master = yes
>>  preferred master = yes
>>  local master = yes
>>  browseable = yes
>>  deadtime = 15
>>  dns proxy = no
>>  getwd cache = yes
>>  load printers = no
>>  mangled names = no
>>  map archive = no
>>  map to guest = never
>>  min receivefile size = 16384
>>  os level = 255
>>  printable = no
>>  printcap name = /dev/null
>>  read raw = yes
>>  unix extensions = yes
>>  use sendfile = yes
>>  wins support = yes
>>  write raw = yes
>>  writeable = yes
>>  logging = file
>>  log file = /var/log/samba/log.%m
>>  max log size = 50
>>  shadow: snapdir = .zfs/snapshot
>>  shadow: snapdirseverywhere = yes
>>  shadow: format = autosnap_%Y-%m-%d_%H:%M:%S_hourly
>>  shadow: localtime = yes
>>
>> Kind Regards,
>> Dominic
>>
>>
> --
> Denis Cardon
> Tranquil IT Systems
> Les Espaces Jules Verne, bâtiment A
> 12 avenue Jules Verne
> 44230 Saint Sébastien sur Loire
> tel : +33 (0) 2.40.97.57.55
> http://www.tranquil-it-systems.fr
>
>