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Bob of Donelson Trophy

2016-Dec-04 15:43 UTC

[Samba] port 135 - NT_STATUS_CONNECTION_REFUSED

On 2016-12-04 09:11, Rowland Penny via samba wrote:
> On Sun, 04 Dec 2016 08:01:09 -0600
> Bob of Donelson Trophy via samba <samba at lists.samba.org> wrote:
> 
>> I have two DC's running Samba 4.5.0 and the "dtdc03"
log.samba is
>> showing the following: 
>> 
>> root at dtdc03:~# tail -f /usr/local/samba/var/log.samba
>> [2016/12/01 10:14:39.167794,  0]
>> ../source4/librpc/rpc/dcerpc_sock.c:245(continue_ip_open_socket)
>> Failed to connect host 192.168.16.50
>> (aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt) on port 135 -
>> NT_STATUS_CONNECTION_REFUSED.
>> [2016/12/01 10:14:39.212551,  0]
>> ../source4/librpc/rpc/dcerpc_sock.c:63(continue_socket_connect)
>> Failed to connect host 192.168.16.50 on port 135 -
>> NT_STATUS_CONNECTION_REFUSED
>> [2016/12/01 10:14:39.212757,  0]
>> ../source4/librpc/rpc/dcerpc_sock.c:245(continue_ip_open_socket)
>> Failed to connect host 192.168.16.50
>> (aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt) on port 135 -
>> NT_STATUS_CONNECTION_REFUSED.
>> [2016/12/01 10:14:39.258017,  0]
>> ../source4/librpc/rpc/dcerpc_sock.c:63(continue_socket_connect)
>> Failed to connect host 192.168.16.50 on port 135 -
>> NT_STATUS_CONNECTION_REFUSED
>> [2016/12/01 10:14:39.258234,  0]
>> ../source4/librpc/rpc/dcerpc_sock.c:245(continue_ip_open_socket)
>> Failed to connect host 192.168.16.50
>> (aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt) on port 135 -
>> NT_STATUS_CONNECTION_REFUSED. 
>> 
>> So, I found the "Verifying_and_Creating_a_DC_DNS_Record" page
of the
>> wiki and ran: 
>> 
>> root at dtdc03:~# ldbsearch -H /usr/local/samba/private/sam.ldb
>> '(invocationId=*)' --cross-ncs objectguid
>> # record 1
>> dn: CN=NTDS
>>
Settings,CN=DTDC03,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=dtshrm,DC=dt
>> objectGUID: d3298cdc-aed1-48e6-b8fc-f3cdb80b1066
>> 
>> # record 2
>> dn: CN=NTDS
>>
Settings,CN=DTDC04,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=dtshrm,DC=dt
>> objectGUID: aa03011a-94c2-4c52-bc60-6fd2f75d35e5
>> 
>> # returned 2 records
>> # 2 entries
>> # 0 referrals 
>> 
>> And then ran: 
>> 
>> root at dtdc03:~# host -t CNAME
>> aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt.
>> aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt is an alias for
>> dtdc04.dtshrm.dt. 
>> 
>> The objectGUID string matches. How do I correct this log entry and
>> resolve the "NT_STATUS_CONNECTION_REFUSED?
> 
> OK, is your DC listening on port 135 ?
> Run this on the DC:
> 
> netstat -plnt | grep 135
> 
> It should return something like this:
> 
> tcp        0      0 0.0.0.0:135             0.0.0.0:*               LISTEN 
2093/samba
> tcp6       0      0 :::135                  :::*                    LISTEN 
2093/samba
> 
> What is the 'server services' line in smb.conf ?
> 
> Rowland
Here is the output from "netstat -plnt | grep 135": 

root at dtdc03:~# netstat -plnt | grep 135
tcp        0      0 192.168.16.49:135       0.0.0.0:*              
LISTEN      1142/samba      
tcp        0      0 127.0.0.1:135           0.0.0.0:*              
LISTEN      1142/samba 

Here are both DC's smb.conf files: 

root at dtdc03:~# cat /etc/samba/smb.conf
# Global parameters
[global]
    netbios name = DTDC03
    realm = DTSHRM.DT
    server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl,
winbindd, ntp_signd, kcc, dnsupdate
    workgroup = DTDOM
    server role = active directory domain controller

    time server = yes

##    log level = 5

    interfaces = 127.0.0.1    192.168.16.49
    bind interfaces only = yes

    allow dns updates = nonsecure and secure 
        dns forwarder = 192.168.16.49

        # Thanks to Lars for this fix, it stops the syslog
        # being spammed by the lack of a CUPS server.
        printing = CUPS
        printcap name = /dev/null

[netlogon]
    path = /usr/local/samba/var/locks/sysvol/dtshrm.dt/scripts
    read only = No

[sysvol]
    path = /usr/local/samba/var/locks/sysvol
    read only = No 

root at dtdc04:~# cat /etc/samba/smb.conf
# Global parameters
[global]
netbios name = DTDC04
realm = DTSHRM.DT
server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl,
winbindd, ntp_signd, kcc, dnsupdate
workgroup = DTDOM
server role = active directory domain controller 

time server = yes 

### log level = 5 

interfaces = 127.0.0.1 192.168.16.50
bind interfaces only = yes 

allow dns updates = nonsecure and secure 
dns forwarder = 192.168.16.50

# Thanks to Lars for this fix, it stops the syslog
# being spammed by the lack of a CUPS server.
printing = CUPS
printcap name = /dev/null 

[netlogon]
path = /usr/local/samba/var/locks/sysvol/dtshrm.dt/scripts
read only = No 

[sysvol]
path = /usr/local/samba/var/locks/sysvol
read only = No 

Your thoughts?

-- 
_______________________________

Bob Wooden of Donelson Trophy

Rowland Penny

2016-Dec-04 16:25 UTC

head link

[Samba] port 135 - NT_STATUS_CONNECTION_REFUSED

On Sun, 04 Dec 2016 09:43:25 -0600
Bob of Donelson Trophy via samba <samba at lists.samba.org> wrote:
> On 2016-12-04 09:11, Rowland Penny via samba wrote:
> 
> > On Sun, 04 Dec 2016 08:01:09 -0600
> > Bob of Donelson Trophy via samba <samba at lists.samba.org>
wrote:
> > 
> >> I have two DC's running Samba 4.5.0 and the "dtdc03"
log.samba is
> >> showing the following: 
> >> 
> >> root at dtdc03:~# tail -f /usr/local/samba/var/log.samba
> >> [2016/12/01 10:14:39.167794,  0]
> >> ../source4/librpc/rpc/dcerpc_sock.c:245(continue_ip_open_socket)
> >> Failed to connect host 192.168.16.50
> >> (aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt) on port
> >> 135 - NT_STATUS_CONNECTION_REFUSED.
> >> [2016/12/01 10:14:39.212551,  0]
> >> ../source4/librpc/rpc/dcerpc_sock.c:63(continue_socket_connect)
> >> Failed to connect host 192.168.16.50 on port 135 -
> >> NT_STATUS_CONNECTION_REFUSED
> >> [2016/12/01 10:14:39.212757,  0]
> >> ../source4/librpc/rpc/dcerpc_sock.c:245(continue_ip_open_socket)
> >> Failed to connect host 192.168.16.50
> >> (aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt) on port
> >> 135 - NT_STATUS_CONNECTION_REFUSED.
> >> [2016/12/01 10:14:39.258017,  0]
> >> ../source4/librpc/rpc/dcerpc_sock.c:63(continue_socket_connect)
> >> Failed to connect host 192.168.16.50 on port 135 -
> >> NT_STATUS_CONNECTION_REFUSED
> >> [2016/12/01 10:14:39.258234,  0]
> >> ../source4/librpc/rpc/dcerpc_sock.c:245(continue_ip_open_socket)
> >> Failed to connect host 192.168.16.50
> >> (aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt) on port
> >> 135 - NT_STATUS_CONNECTION_REFUSED. 
> >> 
> >> So, I found the "Verifying_and_Creating_a_DC_DNS_Record"
page of
> >> the wiki and ran: 
> >> 
> >> root at dtdc03:~# ldbsearch -H /usr/local/samba/private/sam.ldb
> >> '(invocationId=*)' --cross-ncs objectguid
> >> # record 1
> >> dn: CN=NTDS
> >>
Settings,CN=DTDC03,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=dtshrm,DC=dt
> >> objectGUID: d3298cdc-aed1-48e6-b8fc-f3cdb80b1066
> >> 
> >> # record 2
> >> dn: CN=NTDS
> >>
Settings,CN=DTDC04,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=dtshrm,DC=dt
> >> objectGUID: aa03011a-94c2-4c52-bc60-6fd2f75d35e5
> >> 
> >> # returned 2 records
> >> # 2 entries
> >> # 0 referrals 
> >> 
> >> And then ran: 
> >> 
> >> root at dtdc03:~# host -t CNAME
> >> aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt.
> >> aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt is an alias
> >> for dtdc04.dtshrm.dt. 
> >> 
> >> The objectGUID string matches. How do I correct this log entry and
> >> resolve the "NT_STATUS_CONNECTION_REFUSED?
> > 
> > OK, is your DC listening on port 135 ?
> > Run this on the DC:
> > 
> > netstat -plnt | grep 135
> > 
> > It should return something like this:
> > 
> > tcp        0      0 0.0.0.0:135             0.0.0.0:*
> > LISTEN      2093/samba tcp6       0
> > 0 :::135                  :::*                    LISTEN
> > 2093/samba      
> > 
> > What is the 'server services' line in smb.conf ?
> > 
> > Rowland
> 
> Here is the output from "netstat -plnt | grep 135": 
> 
> root at dtdc03:~# netstat -plnt | grep 135
> tcp        0      0 192.168.16.49:135       0.0.0.0:*              
> LISTEN      1142/samba      
> tcp        0      0 127.0.0.1:135           0.0.0.0:*              
> LISTEN      1142/samba 
> 
> Here are both DC's smb.conf files: 
> 
> root at dtdc03:~# cat /etc/samba/smb.conf
> # Global parameters
> [global]
>     netbios name = DTDC03
>     realm = DTSHRM.DT
>     server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl,
> winbindd, ntp_signd, kcc, dnsupdate
>     workgroup = DTDOM
>     server role = active directory domain controller
> 
>     time server = yes
> 
> ##    log level = 5
> 
>     interfaces = 127.0.0.1    192.168.16.49
>     bind interfaces only = yes
> 
>     allow dns updates = nonsecure and secure 
>         dns forwarder = 192.168.16.49
> 
>         # Thanks to Lars for this fix, it stops the syslog
>         # being spammed by the lack of a CUPS server.
>         printing = CUPS
>         printcap name = /dev/null
> 
> [netlogon]
>     path = /usr/local/samba/var/locks/sysvol/dtshrm.dt/scripts
>     read only = No
> 
> [sysvol]
>     path = /usr/local/samba/var/locks/sysvol
>     read only = No 
> 
> root at dtdc04:~# cat /etc/samba/smb.conf
> # Global parameters
> [global]
> netbios name = DTDC04
> realm = DTSHRM.DT
> server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl,
> winbindd, ntp_signd, kcc, dnsupdate
> workgroup = DTDOM
> server role = active directory domain controller 
> 
> time server = yes 
> 
> ### log level = 5 
> 
> interfaces = 127.0.0.1 192.168.16.50
> bind interfaces only = yes 
> 
> allow dns updates = nonsecure and secure 
> dns forwarder = 192.168.16.50
> 
> # Thanks to Lars for this fix, it stops the syslog
> # being spammed by the lack of a CUPS server.
> printing = CUPS
> printcap name = /dev/null 
> 
> [netlogon]
> path = /usr/local/samba/var/locks/sysvol/dtshrm.dt/scripts
> read only = No 
> 
> [sysvol]
> path = /usr/local/samba/var/locks/sysvol
> read only = No 
> 
> Your thoughts?
> 
You seem to be using Bind9, so you don't need the 'dns forwarder'
lines
If you only have one network device installed in the DCs, I would also
loose the 'interfaces' & 'bind interfaces only' lines

I would add this line on each DC:

idmap_ldb:use rfc2307 = yes

Rowland

Bob of Donelson Trophy

2016-Dec-04 17:01 UTC

head link

[Samba] port 135 - NT_STATUS_CONNECTION_REFUSED

On 2016-12-04 10:25, Rowland Penny via samba wrote:
> On Sun, 04 Dec 2016 09:43:25 -0600
> Bob of Donelson Trophy via samba <samba at lists.samba.org> wrote:
> 
> On 2016-12-04 09:11, Rowland Penny via samba wrote:
> 
> On Sun, 04 Dec 2016 08:01:09 -0600
> Bob of Donelson Trophy via samba <samba at lists.samba.org> wrote:
> 
> I have two DC's running Samba 4.5.0 and the "dtdc03"
log.samba is
> showing the following: 
> 
> root at dtdc03:~# tail -f /usr/local/samba/var/log.samba
> [2016/12/01 10:14:39.167794,  0]
> ../source4/librpc/rpc/dcerpc_sock.c:245(continue_ip_open_socket)
> Failed to connect host 192.168.16.50
> (aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt) on port
> 135 - NT_STATUS_CONNECTION_REFUSED.
> [2016/12/01 10:14:39.212551,  0]
> ../source4/librpc/rpc/dcerpc_sock.c:63(continue_socket_connect)
> Failed to connect host 192.168.16.50 on port 135 -
> NT_STATUS_CONNECTION_REFUSED
> [2016/12/01 10:14:39.212757,  0]
> ../source4/librpc/rpc/dcerpc_sock.c:245(continue_ip_open_socket)
> Failed to connect host 192.168.16.50
> (aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt) on port
> 135 - NT_STATUS_CONNECTION_REFUSED.
> [2016/12/01 10:14:39.258017,  0]
> ../source4/librpc/rpc/dcerpc_sock.c:63(continue_socket_connect)
> Failed to connect host 192.168.16.50 on port 135 -
> NT_STATUS_CONNECTION_REFUSED
> [2016/12/01 10:14:39.258234,  0]
> ../source4/librpc/rpc/dcerpc_sock.c:245(continue_ip_open_socket)
> Failed to connect host 192.168.16.50
> (aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt) on port
> 135 - NT_STATUS_CONNECTION_REFUSED. 
> 
> So, I found the "Verifying_and_Creating_a_DC_DNS_Record" page of
> the wiki and ran: 
> 
> root at dtdc03:~# ldbsearch -H /usr/local/samba/private/sam.ldb
> '(invocationId=*)' --cross-ncs objectguid
> # record 1
> dn: CN=NTDS
>
Settings,CN=DTDC03,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=dtshrm,DC=dt
> objectGUID: d3298cdc-aed1-48e6-b8fc-f3cdb80b1066
> 
> # record 2
> dn: CN=NTDS
>
Settings,CN=DTDC04,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=dtshrm,DC=dt
> objectGUID: aa03011a-94c2-4c52-bc60-6fd2f75d35e5
> 
> # returned 2 records
> # 2 entries
> # 0 referrals 
> 
> And then ran: 
> 
> root at dtdc03:~# host -t CNAME
> aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt.
> aa03011a-94c2-4c52-bc60-6fd2f75d35e5._msdcs.dtshrm.dt is an alias
> for dtdc04.dtshrm.dt. 
> 
> The objectGUID string matches. How do I correct this log entry and
> resolve the "NT_STATUS_CONNECTION_REFUSED? 
> OK, is your DC listening on port 135 ?
> Run this on the DC:
> 
> netstat -plnt | grep 135
> 
> It should return something like this:
> 
> tcp        0      0 0.0.0.0:135             0.0.0.0:*
> LISTEN      2093/samba tcp6       0
> 0 :::135                  :::*                    LISTEN
> 2093/samba      
> 
> What is the 'server services' line in smb.conf ?
> 
> Rowland
Here is the output from "netstat -plnt | grep 135": 

root at dtdc03:~# netstat -plnt | grep 135
tcp        0      0 192.168.16.49:135       0.0.0.0:*              
LISTEN      1142/samba      
tcp        0      0 127.0.0.1:135           0.0.0.0:*              
LISTEN      1142/samba 

Here are both DC's smb.conf files: 

root at dtdc03:~# cat /etc/samba/smb.conf
# Global parameters
[global]
    netbios name = DTDC03
    realm = DTSHRM.DT
    server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl,
winbindd, ntp_signd, kcc, dnsupdate
    workgroup = DTDOM
    server role = active directory domain controller

    time server = yes

##    log level = 5

    interfaces = 127.0.0.1    192.168.16.49
    bind interfaces only = yes

    allow dns updates = nonsecure and secure 
        dns forwarder = 192.168.16.49

        # Thanks to Lars for this fix, it stops the syslog
        # being spammed by the lack of a CUPS server.
        printing = CUPS
        printcap name = /dev/null

[netlogon]
    path = /usr/local/samba/var/locks/sysvol/dtshrm.dt/scripts
    read only = No

[sysvol]
    path = /usr/local/samba/var/locks/sysvol
    read only = No 

root at dtdc04:~# cat /etc/samba/smb.conf
# Global parameters
[global]
netbios name = DTDC04
realm = DTSHRM.DT
server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl,
winbindd, ntp_signd, kcc, dnsupdate
workgroup = DTDOM
server role = active directory domain controller 

time server = yes 

### log level = 5 

interfaces = 127.0.0.1 192.168.16.50
bind interfaces only = yes 

allow dns updates = nonsecure and secure 
dns forwarder = 192.168.16.50

# Thanks to Lars for this fix, it stops the syslog
# being spammed by the lack of a CUPS server.
printing = CUPS
printcap name = /dev/null 

[netlogon]
path = /usr/local/samba/var/locks/sysvol/dtshrm.dt/scripts
read only = No 

[sysvol]
path = /usr/local/samba/var/locks/sysvol
read only = No 

Your thoughts?

You seem to be using Bind9, so you don't need the 'dns forwarder'
lines
If you only have one network device installed in the DCs, I would also
loose the 'interfaces' & 'bind interfaces only' lines

I would add this line on each DC:

idmap_ldb:use rfc2307 = yes

Rowland 

Thanks Rowland. Making those suggested adjustments has made both
"log.samba" files say the same: 

root at dtdc03:~# tail -f /usr/local/samba/var/log.samba
samba: setproctitle not initialized, please either call
setproctitle_init() or link against libbsd-ctor.
samba: setproctitle not initialized, please either call
setproctitle_init() or link against libbsd-ctor.
[2016/12/04 10:43:52.125952,  0]
../lib/util/become_daemon.c:124(daemon_ready)
samba: setproctitle not initialized, please either call
setproctitle_init() or link against libbsd-ctor.
  STATUS=daemon 'samba' finished starting up and ready to serve
connections 

The "NT_STATUS_CONNECTION_REFUSED" reference are gone. 

In a previous post, I believe you suggested that this
"setproctitle_init()" log complaint could be ignored. 

Once again, thanks for everyones help.

-- 
_______________________________

Bob Wooden of Donelson Trophy

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