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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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how to force windows 2016 use only SMB3 and encrypted connection

I have two windows server 2016 that are going to use a NAS to share some files. I know that windows 2016 use SMB 3.1.1 by default but I am wondering if it is possible to force it to use only SMB 3.1.1....
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Windows Share Fail

I have a 2012 R2 server that is having issues with shares. When I try to create a new share (SMB Quick) I get an error of "Cannot connect to the E$ admin share to verify if folder 'E:\shares\folder' ...
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1answer
25 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
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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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Ccboot clients stuck at booting randomly

I've been using a pxe booting program called ccboot (www.ccboot.com). For those who are unfamiliar, It's essentially a simplified iscsi based pxe booting software for business use There are 5 drives, ...
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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
24 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
61 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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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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1answer
167 views

Ubuntu map CIFS / SMB share using active domain credentials without password file

Is there a way in Ubuntu 18.04 to map an SMB share when the users login without using a password file? The boxes I have are members of a Windows Active Directory domain and the users will use their ...
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2answers
93 views

Good Reasons for Not Disable the Windows SMB Service by Default?

Apart from File Sharing what are good reasons to not disable the Windows SMB service by default on a corporate environment? This protocol seems to have a lot of security vulnerabilities and been ...
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98 views

SMB on a NIC with multiple IP in same subnet

I have a Windows 2008 R2 server and set multiple IPs(same subnet) on a NIC. Now SMB service is binding on the lowest IP address as port 139, 455 are opened on it. My question is, can I bind SMB to ...
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Converting a file server and Windows File Share to CIFS based share using Netapp Filer

My customer wants to decommission their old Windows Server 2008 file servers. The file shares contain lots of user home folders, group drive and data, application data etc. I would like to implement ...
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24 views

hide a subfolder under DFS

one of our customer's site has a NAS box which has a share and this is part of DFS. They want a folder to be created there like this \\ourdomain.to\DFS\RED\Teams\secretfoldername but it should be be ...
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68 views

Large Windows Server Shares Loading Slow

We have a shared folder with around 85,000 PDFs. If you access this share from any other server or PC as an account with Domain Administrator credentials, the share loads quickly (4 seconds), and ...
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1answer
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What's the difference between “Open Mode” and “# Locks” in Open Files section of Shared Folder Management?

In the Shared Folders Management Console, most sysadmins are quite familiar with the "Open Files" section, but I've never really felt the need to distinguish between the "Open Mode" column, and Number ...
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fileshare not working, windows 10

I can't share files from some windows 10 computers. Revision doesn't matter. port 445 is listening: TCP 0.0.0.0:445 0.0.0.0:0 LISTENING 4 TCP 192.168.0.27:54220 ...
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smb 4.8.5 crash during time machine backup on ubuntu 18.04

I'm trying to set up my storage server as a time machine backup location for my macbook pro running OS X 10.13.6. I think I'm almost there. I can see the network share, log in, and start the backups. ...
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78 views

How to fix intermittent 0x800704cf error when accessing SMB shares on Domain Controller?

We've got an intermittent problem accessing file shares on one of our Windows Server 2012 R2 domain controllers. Occasionally when I try browsing \\servername, I get: Our other two DC's are fine - ...
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1answer
928 views

Windows 10 1803 Requires SMB2 or Higher

I tried to change the computer-name on a Windows 10 (1803) workstation and got this error: The link mentioned goes here. What's the best way to handle this (in a way where I won't see this again) on ...
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1answer
34 views

listing users on remote windows PC tries to connect to all remote network interfaces

I am using Powershell and ADSI to enumerate users in local groups on remote computers. Well, to be honest, I also used Python and win32net, but result is the same, so I guess that choice of language ...
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2answers
185 views

smb with dfs on mac

I currently work a Mac client enviorment, where all users have macs, but they insist on running windows servers. they are currently running acronis file sync to avoid smb, but since they are going to ...
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2answers
52 views

Not Allow Download from Windows Server Network Share

I have a network share (SMB) on our file server (Windows 2012 R2) that will be holding sensitive data. I am trying to figure out how I can limit access to not allow anyone accessing the share to ...
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2answers
575 views

Some Win10 PCs will not connect to SMB share, others will

I have a network SMB share (provided by a Netgear ReadyNas Firmware 6.9.3) Of the 15 Windows 10 Pro PCs I have tried to connect to this share, about half can't "see" the share, while the other half ...
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1answer
170 views

OpenVPN Bridge: cannot access network resources. What am I doing wrong?

Desired End Result: Set up OpenVPN bridged network to access resources stored in NAS via SMB share over the internet connect to VMs via RDP (without port forwarding). Problem: Laptop has ...
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1answer
1k views

SMB issue- Access denied

i have a windows server 2012 R2 for file sharing purpose, clients are using win 7 64 bit. network drives are mapped on profile. Issue: some user drives disconnect suddenly with the message of Access ...
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2answers
3k views

Negotiate SMB2/3 with a Windows client

After installing Win10 1803 recently I noticed I was no longer able to reach my samba shares on my linux machine. After some digging it turned out, that SMB1 is now disabled by default and my linux ...
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377 views

Samba 4.8.2 & Bind 9.10 Dynamic DNS updates not working

I've been fighting Dynamic DNS updates for weeks now. Quite possibly I am missing some key piece of information, and if so, please let me know! I have been going through every iota of information ...
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0answers
17 views

Load balanced windows share with anonymous access hosted on EC2

Im going to stand up a windows server in aws and have it host a share with anonymous access (security groups to control access to specific IP). Looks like its easy enough to create a windows share on ...
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1answer
274 views

Can ping NAS by ip and hostname in Windows 10 console, but not find by ip or hostname in Windows explorer

I have set up a new PC with Windows 10. Now I want to access two local NAS drives but can't connect to them. With my old PC and all coworkers pcs everything is fine. There is no special access ...
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3answers
2k views

Samba SMB Encryption - How safe is it?

I recently set up a Samba server on Linux that allows me to access files on this server on Win10 PCs in my local network. But I wondered if I could access this shared drive over the internet since I ...
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283 views

Proper way to limit SMB traffic using QOS policy

So i have a pxe-boot clients that also need to sync from SMB based server occasionally, so i need to somehow limit the incoming SMB bandwidth, otherwise SMB bandwidth would eat up ISCSI bandwidth, ...
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1answer
107 views

Disable SMB on specific interface windows

I've got an smb share on a computer connected to a 10.0.0.0 network and an 192.168.0.0 network, and I only want smb to listen on the 10 network. Not just setting up a firewall or something like that, ...
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0answers
156 views

Why are WSUS shared folders shared out to entire network?

I set up a Server 2012 R2 instance as a WSUS server and went through initial set up. But now, from another computer on LAN, when I type explore to the server via UNC path I see Wsuscontent and ...
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0answers
1k views

konica bizhub c220 unable to scan to smb

Setup: We have office network setup on workgroup. There is a one Konica Minolta Bizhub C220. Problem: Unable to scan to PC(SMB) folders on couple computers, getting error 57 - Failed to connect to ...
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0answers
125 views

SMB share name changes case

There is some unexpected behaviour of Windows SMB shares. If a share is named all-uppercase, then it changes case depending on how you enter server name. Hence if there is an example share named "...
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418 views

Is there a way to set the default SMB version to SMB1 globally on Ubuntu 16.04 LTS?

I am trying to configure multiple servers running Ubuntu 16.04.2 LTS to backup using the Veeam Linux Agent (VLA) to a Qnap NAS hosted remotely by our IT. For whatever reason, we are required to do so ...
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1answer
163 views

Disable SMB sharing for specific NIC on server 2012

I have 2 servers running windows 2012 R2, one of them is SMB server and the other is iSCSI server, and the clients are using Win7 x64. Now I want to separate networks between iSCSI and SMB using 2 ...
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336 views

Snort rules for detecting smb file transfer

does anybody have a SNORT rule to detect a simple file copy activity happening in Windows ? For example: If i copy a file from my Windows laptop to a remote Windows server via Windows Explorer or ...
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2answers
75 views

Force 2 NICs to specific protocol, ISCSI and SMB

So i have this diskless / pxe booting environment with 28 clients. Essentially it's 28 clients communicating using ISCSI protocol with a single diskless server. The issue we have so far is that ...
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0answers
263 views

Errors when backing up Windows server to NAS

I'm trying to backup several Windows servers to a Synology NAS using the 'Active Backup for Server' package available on the Synology Package Center. The specifics of the package probably aren't too ...
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1answer
144 views

How to detect hardlinks over network share?

I swear I had this working at one point ages ago but now it's not. I have a Windows 10 machine with a Linux network share. I can create hard links on the network share just fine, but I cannot detect ...
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1answer
895 views

windows 10 port forwarding 445

I followed this instruction: https://www.nikhef.nl/~janjust/CifsOverSSH/Win8Loopback.html and something strange is happen: netsh interface portproxy add v4tov4 listenport=446 listenaddress=10.255.255....
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0answers
88 views

SMB volume shown as unmounted for a few seconds

We have 2 servers on AWS, one running Windows 2012R2 Datacenter, the other an Amazon Linux 2017.03, each in a different VPC. The Windows server is exporting a folder over SMB, that is mounted on the ...
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0answers
12 views

How can I make shared folders in a Windows VM visible through `smbtree`?

The scenario is this: A Windows 7 is running as a guest in a VM. That guest has a collection of shared folders. Let's assume the VM's OS is called vmguest, while the share on that OS is called ...
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203 views

SMB file system disk space usage reports zero

With one of the recent Windows updates (luckily) SMB1 was disabled. No problem for our Windows systems. But one of my Linux boxes mounts one of this shares from a script. This now was failing with ...
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1answer
119 views

throughput drops near zero using directional radio relay

We are using the following 1Gbit/s radio link setup: Location A: internet gateway with 1Gbits/s sym. fiber most of our servers including dhcp, dns, fileservers (smb), voip-server, exchange-server 55 ...
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2answers
442 views

Moving Hyper-V virtual disk to SMB share gives file not found error in the end

I want to move some virtual disks to from an old ISCSI disk (old NAS) to a new SMB share but for every disk it gives a file not found error in the end and gives the location of the disk on the SMB ...
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2answers
328 views

Only one Windows 10 PC cannot ping/access two 2003 R2 servers as of recent

I have two older Win 2003 R2 servers acting as DNS, named DNS1 and DNS2. I have two Windows 10 Pro, hard-wired, same network, latest patches. One is a laptop and one is a desktop. The desktop can ...
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1answer
475 views

CTDB Samba failover not highly available

TL;DR Failing a node in a ctdb + samba cluster while interacting with a share interrupts share connection. here and here state there is work in progress to make this possible here states it is ...