Questions tagged [server-message-block]

Server Message Block is a network file sharing protocol created by Microsoft. This is the protocol used for file and printer sharing on Windows networks.

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In OpenMediaVault (baed on Debian), how do I secure an SMB share with login and password?

I'm running a NAS server with https://www.openmediavault.org/ on a Raspberry PI (OpenMediaVault sits on top of Raspbian Lite in this case). I've made a "shared folder", activated SMB sharing and ...
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Windows file share seems to change the network interface even though connecting via ip

Between two windows servers, I have a connection to the standard LAN (which is the default gateway) on the 10.0.0.0/24 network, I also have a direct connection between the two servers which is on its ...
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Two Debian Servers, one mounts CIFs the other won't

I can't figure out what the issue is with my /etc/fstab mounting options. I'm migrating from Airsonic to Lightweight Media Server, part of that migration includes adding a SAMBA share to LMS that ...
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NAS drive mounted RW (in Linux) but some subdirectories are read-only

I'm mounting a set of NAS drives on my Linux box (Ubuntu 20.04) and everything seems to be working fine for most of the drives: sudo mount -t cifs //mynas/mydrive /mnt/mydrive -o \ credentials=/...
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Access Based Enumeration with Azure Files

Is it possible to enable Access Based Enumeration in Azure Files? We're using Azure Files with the AADDS integration enabled (per the setup discussed here - though with just the Azure Files; no local ...
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Why isn't SMB Direct working over RDMA?

In a Windows lab environment, I'm trying to test performance of SMB Direct using Mellanox RDMA adapters with global pause. I wanted to test first with Global Pause for simplicity before switching to ...
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Windows 10 asking for credentials for SMB Share when accessed via IP, but not when accessed via DNS hostname

Summary I have an SMB share on a domain-joined Synology DS416 NAS. A single computer on our network as a strange issue where the user groupuser can access the share via hostname \\group_nas\share ...
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1answer
104 views

Access SMB over a custom port

I have the fileserver hosted on AWS. I was using smb port 445 to access the fileserver. I found out that some ISPs have blocked port 445, so I set up my fileserver instance behind AWS network load ...
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1answer
596 views

How do I find out what version of SMB is in use by each attached client to a Windows Server 2016?

I am trying to determine which version of SMB/CIFS is in use by clients attached to shared folders on my Windows Server 2016. If I run the powershell command Get-SmbConnection on the Windows Server, ...
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28 views

Why doesn't smbtree display the servers which respond to the query

I'm trying to make a samba server (standalone, not AD) reachable in local network. The nmb daemon on the same host says: [2020/03/28 16:35:46.549683, 0] ../../source3/nmbd/nmbd_become_lmb.c:397(...
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How can I access SMB share on a local device which is Azure AD joined using Azure AD credentials

I am doing some testings on Azure in my lab, and I have a Windows 10 that is Azure AD joined only, plus a domain controller which is synced to my Azure AD. I want to be able to access the Windows 10 ...
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1answer
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Azure files with Network File System

I have to run Moodle production servers in Azure. Need to keep userdata (moodledata folder) in a common location like NFS for better management and scalability. I tried Azure Files-SMB service (...
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148 views

NT AUTHORITY\ANONYMOUS LOGON with write access to SMB Share

I have just setup a fresh standalone Windows 2019 Server (Core) in a lab environment (i.e. for my own learning). In part, this is because I was interested in looking into null session configurations ...
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Why open Samba shared folder using \\<domain-name> is slow, but using \\<ip-address> is fast?

I have a Samba server with shared folder. I can open the shared folder in Windows laptop. In the Windows Run program, when I type \\<domain-name>, it will take more than 15 seconds to open the ...
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Setup GID and UID for Microsoft Identity management for Unix

As part of requirements for a software running on CentOS 7 utilizing NFS partation on EMC isilon OneFS as storage, I have to setup RFC2307 correctly on all our Active Directory Domain Controllers. NFS ...
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109 views

Ricoh and Konica Printers fail authentication scanning to SMB shares

Hello I hope someone can give me some guidance here. I have spent the past week and a half trying to resolve this issue but have been failing so far. I will break down how the issue began and what I ...
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57 views

Long delays and slow performance of Server 2K8 R2 VM after upgrade

I used to have a Server 2003 R2 Hyper-V VM instance running on an Server 2012 R2. The performance was very good. THen, I was told that 2003 wasn't being supported anymore by a software package I use, ...
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549 views

Can't Disable SMB 2/3 Signing between Windows 10 and Windows Server 2019

I've been having some strange file copy issues between a Windows 10 client and Window Server 2019 system (DC/Fileserver). I don't want to explain that issue in detail here other than to say it ...
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Server 2008 - Host SMB on one NIC only (without Windows Firewall)

First post here. I have a client with a Server 2008 R2 machine that hosts an SMBv2 share, as well as a non-Windows service on a secondary NIC. We don't want SMB connections to hit the secondary NIC, ...
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75 views

msdos 6.22: troubleshoot net share [closed]

The short question is how to check that a networked DOS6 (MS-DOS 6.22) machine loads its network and its shared drives OK. Both from within that machine and from another modern laptop (OSX or linux or ...
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135 views

Mac OS Mojave: Request SMB connection to be encrypted

I connect to a SMB share from a Mac client (Mac OS Mojave, Finder->Go->"Connect to Server..."). When setting "smb encrypt = mandatory" on the server, the connection is encrypted (Wireshark: Info: ...
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Install SMBv1 client on win10 without admin or compromising security? [closed]

This relates to Sending files from win10 to SMBv1 server? but it is broader. Feel free to edit/move/remove. Windows 10 update 1803 removes all functionality of SMBv1 unless explicitly set so by admin,...
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64 views

Sending files from win10 to SMBv1 server? [closed]

Is it possible to only send files from a win10 machine (A), patched to disable SMBv1/CIFS client with 1803, to a very old device (B) using passwordless SMBv1 (strictly)? I was thinking along the ...
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121 views

Unable to use Azure AD accounts to remotely authenticate to Windows

How can I use an Azure AD account to remotely authenticate to Azure AD-joined Windows? I have: Tried authenticating remotely using Azure AD accounts and every sign-in format that I'm aware of (...
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282 views

Strange STATUS_ACCESS_DENIED issue with SMB2 client and Freenas CIFS SHARE

I've recently started seeing some strange SMB2 Errors on Windows 10 PCs (all of them version 1903). The Fileserver is running FreeNAS-11.1-U7 (with ZFS Volumes) and CIFS Shares with Active Directory ...
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What does wbengine do when it says it compresses/compacts VHDX files over SMB?

I'm backing up some Windows Server 2019 using wbadmin to some Synology-NAS using SMB. Once in a while the logs created during those backups mention that one of the created VHDX files gets compressed/...
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2k views

Expose Fileserver (SMB) over WEB / HTTP(S) Interface [closed]

I have a Windows Fileserver (SMB), for internal storage. I'm looking for a way to add a Web-interface to expose the fileserver over HTTPS. The requirements are: Accessible over HTTPS in a standard ...
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28 views

Possibilities to prevent psexec while offering SMB shares

Is there a way to configure a Windows 10 PC to share folders (SMB via ports 139 and 445), but prevent remote logins via psexec? From https://blog.rapid7.com/2013/03/09/psexec-demystified/ I see that ...
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25 views

I'm using a backup utility to backup my linux to an SMB share..having case sensitivity issues [duplicate]

I'm mounting an SMB share with an ext3 formatted drive from my home router. Wanting to backup some information from my linux box to the share. Is SMB/CIFS shared. Having issues with the fact that ...
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286 views

Linux: rsync to mirror SMB mount to local disk is very slow

I try to mirror a share mounted via SMB to a local dir. The share is hosted on a Windows 2016 server on which I have no access nor can I install any tools. All I have therefore is an SMB share. The ...
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388 views

How to fix slow iSCSI speed (in comparison to SMB)?

I have a NAS which provides SMB and iSCSI targets, and a server which is directly connected via a 10 GbE link (no switch in between). I experience slow speeds with the iSCSI target in contrast to "...
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25 views

NFS/SMB - cluster phenomen (blade center / synology / multi nic)

I hope someone can help me as we have in the company a strange issue and not even our network experts have an idea. The setup: We have a hyper-v cluster hosted on 16 blades in a HPE blade Center/...
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1answer
86 views

SMBv2.1 without encryption seems to not be working on Windows Server 2012 R2

While we update all our Windows 7 machines to 10, we need an SMB share on a Win12R2 server to support unencrypted connections. We have: Disabled SMBv1 Enabled Encryption Set RejectUnencryptedAccess ...
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83 views

Non Domain IIS servers / Files hosted on Domain File Share

Building a load balanced pile of IIS servers: Windows 2019, not domain joined. I'd like to point them all to a share for the sites' content directory to [hopefully] simplify keeping them all in sync. ...
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25 views

Windows Server 2016 slow response on wrong file-sharename

Having dedicated storage (NetApp Release 9.3P4) since some time we have a lot of trouble with some changed SMB timeouts on Windows Server 2016. Between Windows Server 2008R2 and Windows Server 2016 ...
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32 views

AD LDS authentication for Windows SMB shares

we're starting a very basic windows server setup for file shares between employees in our office. Because of the mixed environment (MacOS, Win10 home, Win10 pro) we decided against a domain right now, ...
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1answer
73 views

Map a share that runs on a server not joined to the windows domain

We have a Windows domain. I have to set up a Windows server file share without joining the server to the domain and map the share as a drive on everyone's computer. They will all need RW access to the ...
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1answer
29 views

Share access to a network drive with other users on the same Windows machine

I am using net use to mount network drives. Of course they are only visible to the current user. I am wondering is it possible to share the drive with other users? What I am trying to achieve is to ...
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3k views

How to disallow SMB1 and SMB2 but still allow connections from Linux smbclient and list shares using Thunar?

Running a Samba server, I guess it is a good idea to require encryption and SMB3. So I tried setting these two options in /etc/samba/smb.conf (see documentation) in the [global] section: smb encrypt =...
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21 views

Accessing SMB file failes with user authentication errors

I am trying to work with a partner company to set up a file share so that I can map a drive. This has worked once and then it fails on all subsequent attempts. We have a shared DMZ IP space and a ...
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38 views

cannot write to samba share using non-root user on debian

I have setup a samba share on a lacie NAS, I am able to read/write to it from a windows machine and also the root user of the dabian machine I am using. However, when I try to use a user account on ...
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1answer
467 views

Windows 10 Pro for Workstations can't access anonymous file share

Note: No domain is in use here, we don't have one created yet. In our office we have a file server (A VM running Server Core 2016 with Desktop Experience) that hosts a number of file shares that are ...
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631 views

Cannot find “SMB Direct” in Windows Server Standard 2019 Roles and Features

I try to configure SMB Direct on my Windows Server Standard 2019 server but do not see "SMB Direct" in the Roles and Features Configuration Window. It, however, shows in my Windows 10 For WorkStation ...
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56 views

What compatibility issues may arise when using a NAS vs a “normal” Windows file share?

I'm working with a group of Visual Studio developers who are using a server that has "NAS" in the name, and I'm unsure of the specific file sharing protocol in use between the windows client and ...
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1answer
33 views

SMB share in LAN with remote back-up

I would like to know if it somehow is possible to have a SMB share point towards the LAN NAS but when connecting to the share from an offsite location, it would use the backup remote share that is ...
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2answers
61 views

Windows file copy - intermediary

I can't seem to find an answer to this anywhere. If I want to copy a file from \\server1\ to \\server2\, is it faster to RDP to that machine and do the copy there? If I initiate the copy from my ...
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2answers
5k views

KB 4480970 and or KB 4480960 breaks SMB2 connections to Windows 7 shares

It's become clear that last night's (Tues Jan 8th 2019) patches to Windows 7 broke SMB2 networking in Lanman Server. One or both of KB 4480970 and KB 4480960 results in any OS that uses SMB2 (such as ...
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1answer
30 views

Transfer Speed Limited by Fileserver?

We have a 4gbit teamed nic fileserver that hosts smb shares. The files it accesses are from an ISCI NAS drive which is 10gbit. Will transfer speeds be limited by the file server? Or does the ISCI "...
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1answer
584 views

SMB/CIFS verify data integrity

I'm in the middle of setting up a new fileserver on my network, and can't decide which file-transfer protocol to use. Ensuring that any data transferred to/from the server isn't corrupted in transit ...
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35 views

Server 2012 R2 RDS Session Hosts can't mount shares from 2003 host using SMBv1

I know SMBv1 is bad and 2003 is critically outdated and should not be in production, but this is for a client environment where they control this file server and have shown no interest in upgrading it ...

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