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I've decided to switch to the higher version of SMB in Samba (at least 2) - mostly because of the security reasons.

I've tried to add to the smb.conf in the [global] section:

client min protocol = SMB2 client max protocol = SMB3 server min protocol = SMB2

or just

protocol=SMB2

I have restarted samba or the whole server after each try. But logs say:

[1970/01/01 01:01:12.085949, 0] smbd/negprot.c:706(reply_negprot) No protocol supported ! [1970/01/01 01:01:13.153024, 0] smbd/negprot.c:706(reply_negprot) No protocol supported ! [2018/11/04 12:10:25.080148, 0] param/loadparm.c:7997(lp_do_parameter) Ignoring unknown parameter "server min protocol" [2018/11/04 12:10:25.092055, 0] param/loadparm.c:7997(lp_do_parameter) Ignoring unknown parameter "client min protocol" [2018/11/04 12:10:30.803144, 0] param/loadparm.c:7997(lp_do_parameter) Ignoring unknown parameter "server min protocol" [2018/11/04 12:10:30.804260, 0] param/loadparm.c:7997(lp_do_parameter) Ignoring unknown parameter "client min protocol"

I've googled a little and noticed that some people configure cufs also in the FSTAB. I think I had not done this and it was working just becasue of smb.conf.
Here is my FSTAB:

roc /proc proc defaults 0 0 /dev/mmcblk0p1 /boot vfat defaults 0 2 /dev/mmcblk0p2 / ext4 defaults,noatime 0 1 UUID=34150b89-5e8b-4769-8b68-f403659c58f7 /media/USBHD auto defaults,_netdev 0 2

And here is the smb.conf part defining the shared folder:

[USBHD] comment=Dysk udostepniony path = /media/USBHD valid users = @users force group = users create mask = 0777 directory mask = 0777 read only = no writeable = yes browseable = yes public = yes

Should I edit FSTAB? How?
When is it possible to configure version protocol like in the MAN page in the smb.conf, when it's necessary to do this in FSTAB?
I guess that min protocol may not be available in the Samba version I use. But anyway, it supports SMB2 protocol, so how can I switch it on?

Samba version 3.6.6
NAME="Raspbian GNU/Linux" VERSION_ID="7" VERSION="7 (wheezy)"

Kernel: 4.1.19+

testparm -v

Load smb config files from /etc/samba/smb.conf rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) Unknown parameter encountered: "client min protocol" Ignoring unknown parameter "client min protocol" Unknown parameter encountered: "client max protocol" Ignoring unknown parameter "client max protocol" Processing section "[homes]" Processing section "[printers]" Processing section "[print$]" Processing section "[USBHD]" Loaded services file OK. Server role: ROLE_STANDALONE Press enter to see a dump of your service definitions [global] display charset = LOCALE workgroup = WORKGROUP realm = netbios name = RASPBERRYPI netbios aliases = netbios scope = server string = %h server interfaces = bind interfaces only = No security = USER auth methods = encrypt passwords = Yes client schannel = Auto server schannel = Auto allow trusted domains = Yes map to guest = Bad User null passwords = No obey pam restrictions = Yes password server = * smb passwd file = /etc/samba/smbpasswd private dir = /etc/samba passdb backend = tdbsam algorithmic rid base = 1000 root directory = guest account = nobody enable privileges = Yes pam password change = Yes passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword: * %n\n *password\supdated\ssuccessfully* . passwd chat debug = No passwd chat timeout = 2 check password script = username map = password level = 0 username level = 0 unix password sync = Yes restrict anonymous = 0 lanman auth = No ntlm auth = Yes raw NTLMv2 auth = No client NTLMv2 auth = Yes client lanman auth = No client plaintext auth = No client use spnego principal = No send spnego principal = No preload modules = dedicated keytab file = kerberos method = default map untrusted to domain = No log level = 2 syslog = 0 syslog only = No log file = /var/log/samba/log.%m max log size = 1000 debug timestamp = Yes debug prefix timestamp = No debug hires timestamp = Yes debug pid = No debug uid = No debug class = No enable core files = Yes smb ports = 445 139 large readwrite = Yes max protocol = SMB2 min protocol = CORE min receivefile size = 0 read raw = Yes write raw = Yes disable netbios = No reset on zero vc = No log writeable files on exit = No acl compatibility = auto defer sharing violations = Yes nt pipe support = Yes nt status support = Yes announce version = 4.9 announce as = NT max mux = 50 max xmit = 16644 name resolve order = lmhosts wins host bcast max ttl = 259200 max wins ttl = 518400 min wins ttl = 21600 time server = No unix extensions = Yes allow dcerpc auth level connect = No use spnego = Yes client signing = auto server signing = No client use spnego = Yes client ldap sasl wrapping = sign enable asu support = No svcctl list = deadtime = 0 getwd cache = Yes keepalive = 300 lpq cache time = 30 max smbd processes = 0 paranoid server security = Yes max disk size = 0 max open files = 16384 socket options = TCP_NODELAY use mmap = Yes hostname lookups = No name cache timeout = 660 ctdbd socket = cluster addresses = clustering = No ctdb timeout = 0 ctdb locktime warn threshold = 0 smb2 max read = 65536 smb2 max write = 65536 smb2 max trans = 65536 smb2 max credits = 8192 load printers = Yes printcap cache time = 750 printcap name = cups server = cups encrypt = No cups connection timeout = 30 iprint server = disable spoolss = No addport command = enumports command = addprinter command = deleteprinter command = show add printer wizard = Yes os2 driver map = mangling method = hash2 mangle prefix = 1 max stat cache size = 256 stat cache = Yes machine password timeout = 604800 add user script = rename user script = delete user script = add group script = delete group script = add user to group script = delete user from group script = set primary group script = add machine script = shutdown script = abort shutdown script = username map script = username map cache time = 0 logon script = logon path = \\%N\%U\profile logon drive = logon home = \\%N\%U domain logons = No init logon delayed hosts = init logon delay = 100 os level = 20 lm announce = Auto lm interval = 60 preferred master = No local master = Yes domain master = Auto browse list = Yes enhanced browsing = Yes dns proxy = No wins proxy = No wins server = wins support = No wins hook = kernel oplocks = Yes lock spin time = 200 oplock break wait time = 0 ldap admin dn = ldap delete dn = No ldap group suffix = ldap idmap suffix = ldap machine suffix = ldap passwd sync = no ldap replication sleep = 1000 ldap suffix = ldap ssl = start tls ldap ssl ads = No ldap deref = auto ldap follow referral = Auto ldap timeout = 15 ldap connection timeout = 2 ldap page size = 1024 ldap user suffix = ldap debug level = 0 ldap debug threshold = 10 eventlog list = add share command = change share command = delete share command = preload = lock directory = /var/run/samba state directory = /var/lib/samba cache directory = /var/cache/samba pid directory = /var/run/samba utmp directory = wtmp directory = utmp = No default service = message command = get quota command = set quota command = remote announce = remote browse sync = socket address = 0.0.0.0 nmbd bind explicit broadcast = Yes homedir map = auto.home afs username map = afs token lifetime = 604800 log nt token command = time offset = 0 NIS homedir = No registry shares = No usershare allow guests = Yes usershare max shares = 100 usershare owner only = Yes usershare path = /var/lib/samba/usershares usershare prefix allow list = usershare prefix deny list = usershare template share = allow insecure wide links = No async smb echo handler = No multicast dns register = Yes panic action = /usr/share/samba/panic-action %d perfcount module = host msdfs = Yes passdb expand explicit = No idmap backend = tdb idmap cache time = 604800 idmap negative cache time = 120 idmap uid = idmap gid = template homedir = /home/%D/%U template shell = /bin/false winbind separator = \ winbind cache time = 300 winbind reconnect delay = 30 winbind max clients = 200 winbind enum users = No winbind enum groups = No winbind use default domain = No winbind trusted domains only = No winbind nested groups = Yes winbind expand groups = 1 winbind nss info = template winbind refresh tickets = No winbind offline logon = No winbind normalize names = No winbind rpc only = No create krb5 conf = Yes ncalrpc dir = /var/ncalrpc winbind max domain connections = 1 idmap config * : backend = tdb comment = path = username = invalid users = valid users = admin users = read list = write list = printer admin = force user = force group = read only = Yes acl check permissions = Yes acl group control = No acl map full control = Yes create mask = 0744 force create mode = 00 security mask = 0777 force security mode = 00 directory mask = 0755 force directory mode = 00 directory security mask = 0777 force directory security mode = 00 force unknown acl user = No inherit permissions = No inherit acls = No inherit owner = No guest only = No administrative share = No guest ok = No only user = No hosts allow = hosts deny = allocation roundup size = 1048576 aio read size = 0 aio write size = 0 aio write behind = ea support = No nt acl support = Yes profile acls = No map acl inherit = No afs share = No smb encrypt = auto block size = 1024 change notify = Yes directory name cache size = 100 kernel change notify = Yes max connections = 0 min print space = 0 strict allocate = No strict sync = No sync always = No use sendfile = No write cache size = 0 max reported print jobs = 0 max print jobs = 1000 printable = No print notify backchannel = Yes print ok = No printing = cups cups options = print command = lpq command = %p lprm command = lppause command = lpresume command = queuepause command = queueresume command = printer name = use client driver = No default devmode = Yes force printername = No printjob username = %U default case = lower case sensitive = Auto preserve case = Yes short preserve case = Yes mangling char = ~ hide dot files = Yes hide special files = No hide unreadable = No hide unwriteable files = No delete veto files = No veto files = hide files = veto oplock files = map archive = Yes map hidden = No map system = No map readonly = yes mangled names = Yes store dos attributes = No dmapi support = No browseable = Yes access based share enum = No blocking locks = Yes csc policy = manual fake oplocks = No locking = Yes oplocks = Yes level2 oplocks = Yes oplock contention limit = 2 posix locking = Yes strict locking = Auto share modes = Yes dfree cache time = 0 dfree command = copy = preexec = preexec close = No postexec = root preexec = root preexec close = No root postexec = available = Yes volume = fstype = NTFS set directory = No wide links = No follow symlinks = Yes dont descend = magic script = magic output = delete readonly = No dos filemode = No dos filetimes = Yes dos filetime resolution = No fake directory create times = No vfs objects = msdfs root = No msdfs proxy = [homes] comment = Home Directories valid users = %S create mask = 0700 directory mask = 0700 browseable = No [printers] comment = All Printers path = /var/spool/samba create mask = 0700 printable = Yes print ok = Yes browseable = No [print$] comment = Printer Drivers path = /var/lib/samba/printers [USBHD] comment = Dysk udostepniony path = /media/USBHD valid users = @users force group = users read only = No create mask = 0777 directory mask = 0777 guest ok = Yes
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2 Answers 2

Reset to default
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SLES 11.4 is old enough for its Samba to default to SMBv1 only. You've set both client min protocol and client max protocol, which only affect Samba when it's acting as a client, like smbclient.

For server-side, you've only set server min protocol, so the server max protocol is still defaulting to SMBv1. And because now min protocol is higher than max, smbd actually cannot allow any protocol at all.

The facts that SLES 11.4's Samba is so old and its SMBv3 support seems to be buggy (as you discovered) caused us to make it a priority at work to upgrade any Samba servers that were still running SLES 11.4 to SLES 12 or newer.

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running Samba-3.6.3 in SLES 11.4 which has kernel 3.0, my global section is this and I know SMB2 works because windows 10 client will NOT connect via SMB1 the minimum is SMB2 for win10 out of the box.

Note that if you set Min Protocol = SMB2 then if your clients are Windows 7 it will not work for them... at least i did not figure it out troubleshooting on the windows side I think for Win7 it is default SMB1 unless you manually configure something in win7 to say do SMB2.

And for whatever reason setting max protocol = SMB3 caused things not to work for me thus I have SMB2 specified.

[global] min protocol = SMB2 max protocol = SMB2 workgroup = workgroup passdb backend = tdbsam map to guest = Never usershare allow guests = No add machine script = /usr/sbin/useradd -c Machine -d /var/lib/nobody -s /bin/false %m$ domain master = No security = user wins support = No server signing = auto name resolve order = lmhosts bcast host printing = bsd printcap name = /dev/null log level = 2 auth:10 auth_audit:3 auth_json_audit:3 winbind:5 max log size = 1000000

and a sample of a share that i use

[data1] create mask = 660 directory mask = 770 inherit acls = Yes path = /data1 read only = No

you should not need to do anything in /etc/fstab other than mounting your storage resource as you normally would. Then once mounted make sure access permissions of that folder... chmod 777 /data1 in my example, are open for starters, then when working go ahead and remove world permissions and change group ownership and permissions as you need.

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