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Jonathan S. Fisher

2015-Nov-30 22:38 UTC

[Samba] After joining domain, Samba uses the workgroup name, not the FQDN when running the net ads command

Thank you Rowland for the help so far. I followed the directions on that
page very precisely. I was able to join the domain, but the RPC stuff still
doesn't work and I'm still having the same problem. The actual root
problem
is that up to this point, winbind works for about a day or so then I start
getting NT_STATUS_ACCESS_DENIED.

Anyway, after the join, winbind works right now:

sudo wbinfo -a administrator
Enter administrator's password:
plaintext password authentication succeeded

Checking RPC:

sudo net rpc info -Uadministrator
Unable to find a suitable server for domain WINDOWS

Here is my new config:

 /etc/hosts
127.0.0.1   localhost

/etc/krb5.conf
[libdefaults]
default_realm = WINDOWS.CORP.XXX.COM

/etc/samba/smb.conf
[global]
netbios name=freeradius
security=ADS
workgroup=WINDOWS
realm=WINDOWS.CORP.XXX.COM

log file=/var/log/samba/%m.log
log level=1

dedicated keytab file=/etc/krb5.keytab
kerberos method=secrets and keytab
winbind refresh tickets=yes

winbind trusted domains only=no
winbind use default domain=yes
winbind enum users=yes
winbind enum groups=yes

load printers=no
template shell=/bin/false

idmap config WINDOWS:backend=rid
idmap config WINDOWS:range=10000-99999


On Mon, Nov 30, 2015 at 3:07 PM, Rowland Penny <rowlandpenny241155 at
gmail.com> wrote:
> On 30/11/15 20:52, Jonathan S. Fisher wrote:
>
>> /etc/resolv.conf
>> # Dynamic resolv.conf(5) file for glibc resolver(3) generated by
>> resolvconf(8)
>> # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
>> nameserver 192.168.127.129
>> search windows.corp.XXX.com <http://windows.corp.XXX.com>
>>
>
> I take it 192.168.127.129 is your AD DC.
>
>
>> /etc/hosts
>>
>> 127.0.0.1   localhost
>> 127.0.1.1 freeradius.windows.corp.XXX.com <
>> http://freeradius.windows.corp.XXX.com> freeradius
>> 192.168.127.131 whiskey.windows.corp.XXX.com <
>> http://whiskey.windows.corp.XXX.com> whiskey
>> 192.168.112.4 wine..windows.corp.XXX.com
<http://windows.corp.XXX.com>
>> wine
>>
>
> Hmm, I think you are using Network Manager, which uses dnsmasq as a cache,
> I would suggest you stop this ( open the network-manager conf and comment
> out the dnsmasq line, restart network-manager). If you are using DHCP, I
> would also suggest you remove the three lines below '127.0.0.1
localhost',
> if your machine has a fixed ip, I would remove any of the three lines that
> doesn't point to your machine.
>
>
>>  /etc/krb5.conf
>>
>> [libdefaults]
>> default_realm = WINDOWS.CORP.XXX.COM
<http://WINDOWS.CORP.XXX.COM>
>>
>
> Believe it or not, you do not need any of /etc/krb5 from here on, you only
> need the two lines above
>
> krb4_config = /etc/krb.conf
>> krb4_realms = /etc/krb.realms
>> kdc_timesync = 1
>> ccache_type = 4
>> forwardable = true
>> proxiable = true
>>
>> v4_instance_resolve = false
>> v4_name_convert = {
>> host = {
>> rcmd = host
>> ftp = ftp
>> }
>> plain = {
>> something = something-else
>> }
>> }
>> fcc-mit-ticketflags = true
>>
>> [realms]
>> WINDOWS.CORP.XXX.COM <http://WINDOWS.CORP.XXX.COM> = {
>> kdc = whiskey.windows.corp.XXX.com:88 <
>> http://whiskey.windows.corp.XXX.com:88>
>> kdc = wine.windows.corp.XXX.com:88
<http://wine.windows.corp.XXX.com:88>
>> admin_server = whiskey.windows.corp.XXX.com:749 <
>> http://whiskey.windows.corp.XXX.com:749>
>> }
>>
>> [appdefaults]
>> pam = {
>> ticket_lifetime = 1d
>> renew_lifetime = 1d
>> forwardable = true
>> proxiable = false
>> retain_after_close = false
>> minimum_uid = 0
>> debug = false
>> }
>>
>> [domain_realm]
>> .windows.corp.XXX.com <http://windows.corp.XXX.com> >>
WINDOWS.CORP.XXX.COM <http://WINDOWS.CORP.XXX.COM>
>> windows.corp.XXX.com <http://windows.corp.XXX.com> =
WINDOWS.CORP.XXX.COM
>> <http://WINDOWS.CORP.XXX.COM>
>>
>> [login]
>> krb4_convert = true
>> krb4_get_tickets = false
>>
>>
>>
> I would also go here:
> https://wiki.samba.org/index.php/Setup_Samba_as_an_AD_Domain_Member
>
> Setup samba as described there, you will need to follow the hyperlinks.
>
> Rowland
>
>
> On Mon, Nov 30, 2015 at 2:43 PM, Rowland Penny <
>> rowlandpenny241155 at gmail.com <mailto:rowlandpenny241155 at
gmail.com>>
>> wrote:
>>
>>     On 30/11/15 20:30, Jonathan S. Fisher wrote:
>>
>>         Same results with that command. And the same DNS query occurred
>>
>>         On Mon, Nov 30, 2015 at 2:20 PM, Rowland Penny
>>         <rowlandpenny241155 at gmail.com
>>         <mailto:rowlandpenny241155 at gmail.com>
>>         <mailto:rowlandpenny241155 at gmail.com
>>
>>         <mailto:rowlandpenny241155 at gmail.com>>> wrote:
>>
>>             On 30/11/15 20:01, Jonathan S. Fisher wrote:
>>
>>                 Hey guys,
>>
>>                 I've successfully joined the domain with "sudo
net ads
>>         join
>>                 -k". However,
>>                 when I try to run this: "sudo net rpc info" I
get this
>>         error:
>>                 "Unable to
>>                 find a suitable server for domain WINDOWS"
>>
>>                 I dumped the DNS requests and it looks like the problem
is
>>                 that it's asking
>>                 for ldap entries under the workgroup name, not the
FQDN:
>>
>>                  From Wireshark:
>>
>>                 Queries
>>                 _ldap._tcp.pdc._msdcs.WINDOWS: type SRV, class IN
>>                 Name: _ldap._tcp.pdc._msdcs.WINDOWS
>>
>>                 Ok great, so if I dig that with the command: "dig
>>                 _ldap._tcp.pdc._msdcs.WINDOWS"  dig times out. If
I
>>         dig the
>>                 FQDN: "dig
>>                 _ldap._tcp.pdc._msdcs.WINDOWS.CORP.XXX.COM
>>         <http://msdcs.WINDOWS.CORP.XXX.COM>
>>                 <http://msdcs.WINDOWS.CORP.XXX.COM>" I get a
response
>>         instantly.
>>
>>                 Is this a problem with my windows domain controller
>>         (how do I
>>                 make it
>>                 respond to those queries)? Or is this a problem with
>>         my samba
>>                 setup?
>>
>>                 Samba version:  4.2.5-SerNet-Ubuntu-8.trusty
>>
>>                 Here is my smb.conf:
>>
>>                 [global]
>>                 security=ads
>>                 realm=WINDOWS.CORP.XXX.COM
>>         <http://WINDOWS.CORP.XXX.COM>
<http://WINDOWS.CORP.XXX.COM>
>>
>>
>>                 workgroup=WINDOWS
>>                 domain master=no
>>                 local master=no
>>                 preferred master=no
>>                 load printers=no
>>                 printing=bsd
>>                 printcap name=/dev/null
>>                 disable spoolss=yes
>>                 idmap backend=tdb
>>                 idmap uid=10000-99999
>>                 idmap gid=10000-99999
>>                 winbind enum users=yes
>>                 winbind enum groups=yes
>>                 winbind use default domain=yes
>>                 winbind nested groups=yes
>>                 winbind refresh tickets=yes
>>                 winbind offline logon=yes
>>                 template shell=/bin/false
>>                 client use spnego=yes
>>                 client ntlmv2 auth=yes
>>                 encrypt passwords=yes
>>                 restrict anonymous=2
>>                 log file=/var/log/samba/samba.log
>>                 log level=2
>>                 dcerpc endpoint servers=remote
>>                 wins support=no
>>
>>
>>             Try it like this: sudo net rpc info -UAdministrator
>>
>>             Rowland
>>
>>
>>
>>     OK, what have you got in /etc/resolv.conf & /etc/krb5.conf
>>
>>
>>     Rowland
>>
>>     --
>>
>
> --
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
>
-- 
Email Confidentiality Notice: The information contained in this 
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individual or entity to whom it is addressed. If you are not the intended 
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Rowland Penny

2015-Dec-01 10:31 UTC

head link

[Samba] After joining domain, Samba uses the workgroup name, not the FQDN when running the net ads command

On 30/11/15 22:38, Jonathan S. Fisher wrote:> Thank you Rowland for the help so far. I followed the directions on 
> that page very precisely. I was able to join the domain, but the RPC 
> stuff still doesn't work and I'm still having the same problem. The
> actual root problem is that up to this point, winbind works for about 
> a day or so then I start getting NT_STATUS_ACCESS_DENIED.
>
> Anyway, after the join, winbind works right now:
>
> sudo wbinfo -a administrator
> Enter administrator's password:
> plaintext password authentication succeeded
>
> Checking RPC:
>
> sudo net rpc info -Uadministrator
> Unable to find a suitable server for domain WINDOWS
>
> Here is my new config:
>
>  /etc/hosts
> 127.0.0.1   localhost
>
> /etc/krb5.conf
> [libdefaults]
> default_realm = WINDOWS.CORP.XXX.COM <http://WINDOWS.CORP.XXX.COM>
>
> /etc/samba/smb.conf
> [global]
> netbios name=freeradius
> security=ADS
> workgroup=WINDOWS
> realm=WINDOWS.CORP.XXX.COM <http://WINDOWS.CORP.XXX.COM>
>
> log file=/var/log/samba/%m.log
> log level=1
>
> dedicated keytab file=/etc/krb5.keytab
> kerberos method=secrets and keytab
> winbind refresh tickets=yes
>
> winbind trusted domains only=no
> winbind use default domain=yes
> winbind enum users=yes
> winbind enum groups=yes
>
> load printers=no
> template shell=/bin/false
>
> idmap config WINDOWS:backend=rid
> idmap config WINDOWS:range=10000-99999
>
>
>
You still need  a bit more in your smb.conf:

idmap config *:backend = tdb
idmap config *:range = 2000-9999

You need these lines to get the builtin users & groups mapped.

I think your problem is DNS related, you should be able to ping a DC via 
ipaddress & hostname

ping -c1 192.168.127.131
ping -c1 whiskey.windows.corp.XXX.com
ping -c1 whiskey
ping -c1 192.168.112.4
ping -c1 wine.windows.corp.XXX.com
ping -c1 wine

The above commands should all return a reply.

Does your dhcp server deliver the required info?

Does 'hostname -d' return the fully qualified domain name of the client?

Is there a firewall running on the client? if so, try turning it off.

If you follow the Samba wiki, I can assure you that it does work:

rowland at debnet:~/Downloads$ sudo net rpc info -Uadministrator
[sudo] password for rowland:
Enter administrator's password:
Domain Name: SAMDOM
Domain SID: S-1-5-21-xxxxxxxxxx-xxxxxxxxxx-xxxxxxxxxx
Sequence number: 1
Num users: XXXXX
Num domain groups: XXXX
Num local groups: XXXX

If you are having any problems understanding or following the wiki, 
please tell us, otherwise we will just assume everybody understands it :-)

Rowland

Jonathan S. Fisher

2015-Dec-01 15:47 UTC

head link

[Samba] After joining domain, Samba uses the workgroup name, not the FQDN when running the net ads command

Great things to investigate... thank you.

Ok, so everything is pingable. I've checked to make sure I can send TCP and
UDP traffic between the hosts with netcat.
> Does your dhcp server deliver the required info?For DNS? Yes, it tells the client to use 192.168.127.129. I'd be in a world
of hurt otherwise!
> Does 'hostname -d' return the fully qualified domain name of the
client?No, it doesn't return anything actually! Maybe this is why is keeps trying
to send ask for SRV records in WINDOWS instead of WINDOWS.CORP.XXX.COM
> Is there a firewall running on the client? if so, try turning it off.Yep, it's off. Off on the servers too.
> If you follow the Samba wiki, I can assure you that it does work:I know :) The documentation is very clear, it's some oddity about my
network I'm sure.

I'll look into the hostname -d and see if I can figure out why that's
not
returning anything


On Tue, Dec 1, 2015 at 4:31 AM, Rowland Penny <rowlandpenny241155 at
gmail.com>
wrote:
> On 30/11/15 22:38, Jonathan S. Fisher wrote:
>
>> Thank you Rowland for the help so far. I followed the directions on
that
>> page very precisely. I was able to join the domain, but the RPC stuff
still
>> doesn't work and I'm still having the same problem. The actual
root problem
>> is that up to this point, winbind works for about a day or so then I
start
>> getting NT_STATUS_ACCESS_DENIED.
>>
>> Anyway, after the join, winbind works right now:
>>
>> sudo wbinfo -a administrator
>> Enter administrator's password:
>> plaintext password authentication succeeded
>>
>> Checking RPC:
>>
>> sudo net rpc info -Uadministrator
>> Unable to find a suitable server for domain WINDOWS
>>
>> Here is my new config:
>>
>>  /etc/hosts
>> 127.0.0.1   localhost
>>
>> /etc/krb5.conf
>> [libdefaults]
>> default_realm = WINDOWS.CORP.XXX.COM
<http://WINDOWS.CORP.XXX.COM>
>>
>> /etc/samba/smb.conf
>> [global]
>> netbios name=freeradius
>> security=ADS
>> workgroup=WINDOWS
>> realm=WINDOWS.CORP.XXX.COM <http://WINDOWS.CORP.XXX.COM>
>>
>> log file=/var/log/samba/%m.log
>> log level=1
>>
>> dedicated keytab file=/etc/krb5.keytab
>> kerberos method=secrets and keytab
>> winbind refresh tickets=yes
>>
>> winbind trusted domains only=no
>> winbind use default domain=yes
>> winbind enum users=yes
>> winbind enum groups=yes
>>
>> load printers=no
>> template shell=/bin/false
>>
>> idmap config WINDOWS:backend=rid
>> idmap config WINDOWS:range=10000-99999
>>
>>
>>
>>
> You still need  a bit more in your smb.conf:
>
> idmap config *:backend = tdb
> idmap config *:range = 2000-9999
>
> You need these lines to get the builtin users & groups mapped.
>
> I think your problem is DNS related, you should be able to ping a DC via
> ipaddress & hostname
>
> ping -c1 192.168.127.131
> ping -c1 whiskey.windows.corp.XXX.com
> ping -c1 whiskey
> ping -c1 192.168.112.4
> ping -c1 wine.windows.corp.XXX.com
> ping -c1 wine
>
> The above commands should all return a reply.
>
> Does your dhcp server deliver the required info?
>
> Does 'hostname -d' return the fully qualified domain name of the
client?
>
> Is there a firewall running on the client? if so, try turning it off.
>
> If you follow the Samba wiki, I can assure you that it does work:
>
> rowland at debnet:~/Downloads$ sudo net rpc info -Uadministrator
> [sudo] password for rowland:
> Enter administrator's password:
> Domain Name: SAMDOM
> Domain SID: S-1-5-21-xxxxxxxxxx-xxxxxxxxxx-xxxxxxxxxx
> Sequence number: 1
> Num users: XXXXX
> Num domain groups: XXXX
> Num local groups: XXXX
>
> If you are having any problems understanding or following the wiki, please
> tell us, otherwise we will just assume everybody understands it :-)
>
> Rowland
>
> --
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
>
-- 
Email Confidentiality Notice: The information contained in this 
transmission is confidential, proprietary or privileged and may be subject 
to protection under the law, including the Health Insurance Portability and 
Accountability Act (HIPAA). The message is intended for the sole use of the 
individual or entity to whom it is addressed. If you are not the intended 
recipient, you are notified that any use, distribution or copying of the 
message is strictly prohibited and may subject you to criminal or civil 
penalties. If you received this transmission in error, please contact the 
sender immediately by replying to this email and delete the material from 
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