how to mount an omv share on a linux machine using mount.cifs ?

it might be a dump question, but i simply can figure it out

how to mount an omv share on a linux machine using mount.cifs ?

i have a share called 'testshare'

there is a user called 'tester'

and a password 'testing'

and the Omv has the ip 192.168.1.2

the share is working and i can connect to it from a windows machine w/o any problems

but when i go to my linux-machine and try

mount.cifs -o username=tester,password=testing //192.168.1.2/testshare /mnt

it always leads to

mount error(95): Operation not supported

Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

a little help would be appreciated

utils are installed and mounting shares from other machines work fine

my scanner cant access the shares using cifs neither (for saving scans)

neither cant my sat-receier, i have to use nfs to watch videos

only my laptop does not have any issues (the only windows device)

is there something to put in front of the sharename ? (using nfs i have to add /export before the sharename)

i tried from 4 different devices

1. vu+ satreceiver (enigma2, kind of dreambox, cifs installed by default): works neither from commandline nor from menu

2. linux machine running ubuntu 20.04 (cifs-utils installed) lts: does not work from commandline (device has no gui)

3. hp multi-purpose-printer: does not work from menu

4. win10 laptop: works

yes, i ran the commands as root (the enigma-device does not have any other user). i had 2 other kinds of nas before in my network (synology and unraid) and both worked fine with the shares.

only the windowsmachine is able to access the cifs-shares of my omv (version 6)

for the devices 1 and 2 i can use nfs as workaround, but on number 3 (the hp printer) this is not possible.

the output of smbclient says no workgroup available

but workgoup is set in omv (see picture)

i added

client min protocol = NT1

ntlm auth = yes

to extra-options of that share.

now 2 can connect, but 1 and 3 still can not

anyy suggestions what other options i could try ?

(i also tested client min protocol = NT1, server min protocol = NT1, ntlm auth = yes, ntlm auth = ntlmv1-permitted what did not work neither)

OK, i have got a working config now

i did no extra options to the share but modified the global settings of CIFS

SMB/CIFS> Settings>Extra Option

client min protocol = NT1

server min protocol = NT1

ntlm auth = yes

The first two lines were enough for the linux-receiver but the hp-printer need the the additional third line. I meanwhile found another thread, but they didnt add line 2 and without that line the receiver did not work.

Maybe this will help others too.

this is for internal use only.

im not reachable via ipv4 from the outside and and the only open ipv6 port for the nas is to use emby.

the rest of my network is reachable via vpn only.