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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No access to SMB sharing on Windows Server 2019

I am new to Windows Server. I'm trying to create an SMB share using the Server Manager tool on a Windows Server 2019, but unfortunately no matter what I do, I always get an error message. It comes the ...
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how do ActiveDirectory, WMI, SMB, et al all fit together?

I am studying for the OSCP exam and am getting lost in the rabbit hole that is Windows network technologies. I understand that ActiveDirectory is a Directory Service that implements LDAP expose ...
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Slow SMB file transfers over the Internet while using USB-C

we are having an issue with slow SMB file transfer speeds over the internet when using a USB-C connected network device. Setup in use: We are using Lenovo Carbon X1 laptops connected via USB-C to a ...
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Windows server 2019 super slow read-access to smb shares

Trying to resolve the problem with SMB shares on 2019 Server. The upload speed is perfect, but when I try to open directories, it may stuck, opening file of 100kb size may take a minute. This persists ...
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21 views

Problems accessing shared folder in Windows clustered file Server 2008 R2

Firs of all I need to apologise for my poor technical and language skills. I will try to describe a problem as detail as I can. There is subnet 172.16.10.0/24 In this subnet I have 3 servers 1 storage ...
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22 views

Windows server SMB instances

Is it possible to setup 2 instances of SMB with build-in Windows SMB? For example: folders A, B, C and D are need to be shared. Server has 2 NICs. Is it possible to do that folder A and B is ...
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43 views

file shared on SMB on zfs on linux cannot be read over network

The file can be opened locally. I think the problem is related to attributes or permissions somehow, but I do not know how to check them. The files are GoPro videos in a particular directory, and ...
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67 views

SMB file access behind NAT policy in firewall

I've got an file server behind a firewall (different network from my production network), so my computers are reaching files using a NAT policy in my Firewall. My users are having troubles and lost ...
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Missing Admin Shares on Windows Server 2012R2 and Server 2019

I was troubleshooting network scan credential failures and noticed that, for some reason, the "Admin" shares on my servers were now MIA. My servers don't typically have a remote drive mapped,...
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29 views

Office files taking more than 30 seconds to load from network shares

Office files (Excel, Word etc.) have recently started taking 30 seconds + the normal load time to run from our file shares. We have it on several servers with 2012R2, 2016, 2019. We've also set up a ...
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Azure SMB File Share Permission Denied

We have an SMB share set up in Azure. Our infrastructure has an on-prem AD which synchronises with Azure AD and then there is an AADDS domain within Azure which has a copy of the user accounts. If I ...
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Performance between different SMB/CIFS versions

I couldn't seem to find a lot in searches about the performance difference between samba versions. Obviously, security has been improved, but what about performance?
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Event 1007: The share denied anonymous access to the client

the body of evevnt is: " **The share denied anonymous access to the client. Client Name: \10.139.70.35 Client Address: 10.139.70.35:49157 Share Name: \*\in Share Path: ??\C:\Users\jodat\Desktop\...
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24 views

In what order to executable files get transferred and executed from a network share?

What is the difference between transferring an executable file to your local computer before running it vs directly running it from an SMB share. Does running it from the share transfer the whole file ...
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36 views

multiple robocopy calls in one .bat file won't run

I'm trying to backup some files from my Windows server to an external USB drive using robocopy. Running robocopy tasks in cmd works fine but in the .bat it won't run and instead just echoes the ...
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How should I block traffic to destination port using iptables?

I have received an abuse from my server provider and one thing which is the same is that the target on destination IPs is the SMB (445) port . How can I block destination traffic to port 445 using ...
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88 views

Error Uninstall SMB1

I tried to execute this command in powershell Uninstall-WindowsFeature -Name FS-SMB1 -Remove but encountered error message Uninstall-WindowsFeature: The request to add or remove features on the ...
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256 views

Azure Premium File Share slow over SMB

I m trying to use Azure Premium Azure file share as a mounted drive with SMB 3.0 on windows 10. But the performance are not that great, the upload is around 55mb/s and the download is around 20mb/s ...
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55 views

How do i resolve this errpr NT_STATUS_INTERNAL_DB_CORRUPTION?

I have been trying to set up LDAP authentication for SMB share in FreeNAS 11.3. SMB is running and all the users and groups have been imported into FreeNAS. getent passed shows user. But when I try ...
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How can we use LDAP to authenticate SMB share in FreeNAS?

SMB service has been enabled, I can share using freeNAS created users to authenticate SMB share. But how can we use LDAP to authenticate SMB shares? Current LDAP configuration in running on different ...
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logfile on azure share cannot be deleted

I have mounted an azure fileshare on my local machine (ubuntu) and deleted a bunch of files. But some of the files I cannot delete e.g. from the mounted folder: $ ls -la total 1 drwxr-xr-x 2 root root ...
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25 views

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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38 views

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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66 views

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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207 views

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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214 views

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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743 views

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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1k 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
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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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194 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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48 views

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
188 views

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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350 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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53 views

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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324 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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2answers
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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1k 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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1answer
56 views

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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143 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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311 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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83 views

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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1answer
94 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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1answer
212 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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654 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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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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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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1answer
573 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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1answer
790 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
112 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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