[Samba] After joining domain, Samba uses the workgroup name, not the FQDN when running the net ads command
Jonathan S. Fisher
jonathan at springventuregroup.com
Mon Nov 30 22:38:44 UTC 2015
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
>>
>> --
>>
>
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