samba - Apr 2025 - nmbd don't start but gives no error (termux)

On Sun, 30 Mar 2025 17:58:10 +0200
f0rhum via samba <samba at lists.samba.org> wrote:
>
> Hi Rowland
> 
> > disable netbios = yes
> > smb ports = 4445
> > nbt port = 1137
> 
> Does it make sense to have these 3 all together? 
Well, no.
The first two together, or the last two together, but not all three
together, you need netbios for the nbt port.

> I can't get the
> Internet to clearly tell me if I can have name resolution without
> smb1 and without dns, i.e only having smb2 AND NOT dns. What about
> the error smb1 unix extensions unknown parameter ?
As I said 'smb1 unix extensions' replaced 'unix extensions'
(this is
for the upcoming 'smb3 unix extensions), so if your Samba version isn't
new enough, use 'unix extensions' instead.
> 
> I can connect the server's //IP/Share with SMB2 from PC & camera
> but I can't from both with //serverName/share even when I have the 3
> lines above in smb.conf and server reloaded. 
To use a hostname (or as you put it 'serverName'), you need to run a
dns server, or Avahi, or use SMBv1.
> I can't the server as
> root even that my phone is rooted because the package is not intended
> for that Embedded advice in smb.conf comments is to use high ports
> 4445 [1139] and iptables
> 
> I have added these which should allow me to use any clients without
> specifying "-p port" : iptables -t nat -A PREROUTING -p udp
> --destination-port 137 -j REDIRECT --to-port 1137 iptables -t nat -A
> PREROUTING -p tcp --destination-port 139 -j REDIRECT --to-port 1139
> iptables -t nat -A PREROUTING -p tcp --destination-port 445 -j
> REDIRECT --to-port 4445 
Well that should work, I never thought of it.

Rowland

Le 30/03/2025 ? 18:52, Rowland Penny via samba a ?crit?:
> On Sun, 30 Mar 2025 17:58:10 +0200
> f0rhum via samba <samba at lists.samba.org> wrote:
>
>> Hi Rowland
>>
>>> disable netbios = yes
>>> smb ports = 4445
>>> nbt port = 1137
>> Does it make sense to have these 3 all together?
> Well, no.
> The first two together, or the last two together, but not all three
> together, you need netbios for the nbt port.
Hi Rowland

I tried with smb.conf below and captured with tcpdump wlan1 in the 
phone, with nothing else than the phone and the camera attached, trying 
to use only smb1 (I don't worry about security because there is only the 
server and the camera on this wlan).
sudo tcpdump -c5000 -U -i wlan1 -net 192.168.94.0/24 -w 
path/tcpdumpStartSrvsmb1.pcap
in one terminal.
In another one I run smbd && sleep 3 && nmbd -p1137 -d3
&& sudo ip -4 a
last command just to check wlan1 IP.
still nmbd won't show on ps -A|grep mbd

There is no packet from the server when it starts
After initial DHCP offer/ack and broadcast ARP probe + own IP 
announcements from camera it seems the camera is only speaking smb1 
ports 137 to 138 but not 135 neither 139 (NBNS unreplied registration 
broadcasts for NBNS(137) name and workgroup, then also unreplied 
BROWSER(138) Get Backup List Request broadcasts, then NBNS Name query 
NBTSTAT full of zeros to the phone IP, to which an ICMP reply comes back 
from the phone IP with content Destination unreachable (Port 
unreachable), all this twice
until I manually teach it the server/phone IP, then it can finally show 
the share list and prompts credentials then connects/transfers files 
over smb2 port 445 (DCERPC - SRVSVC - SMB)

# vim: filetype=samba
[global]
server min protocol = lanman1
server max protocol = nt1
disable netbios = no
smb ports = 4445 1139
dgram port = 1138
nbt port = 1137
unix extensions = yes
 ?? netbios name = MYPHONE
 ?? workgroup = WORKGROUP
 ?? server string = Samba on Termux
 ?? security = user
 ?? server role = standalone
 ?? bind interfaces only = yes
 ?? interfaces = 127.0.0.0/8 wlan* staticip
 ?? delete readonly = yes
 ?? inherit permissions = yes
 ?? multicast dns register = no
 ?? host msdfs = no
 ?? dcerpc endpoint servers = rpcecho
 ?? max connections = 6
 ?? max smbd processes = 8
 ?? deadtime = 15
 ?? restrict anonymous = 2
 ?? aio write size = 0
 ?? min receivefile size = 16384
 ?? nt acl support = no
 ?? ea support = no
 ?? store dos attributes = no
 ?? map archive = no
 ?? max log size = 50
 ?? enable core files = no
 ?? load printers = no
 ?? printing = bsd
 ?? printcap name = /dev/null
 ?? disable spoolss = yes
 ?? show add printer wizard = no
 ?? max print jobs = 0

#============================ Share Definitions 
=============================[TZ]
 ?? comment = Internal storage
 ?? path = /sdcard/DCIM/TZ
 ?? vfs objects = aio_pthread
 ?? aio_pthread:aio open = yes
 ?? read only = no

Dropping the non root scenario
I try to run it as root.
I'm fixing errors in log.smb with chmod/chown -R