Here's what I did: Disconnect from all SMB shares before continuing! sudo vi /etc/nsmb.conf Force SMB2 and disable packet signing [default] signing_required=no protocol_vers_map=2 Using Terminal, Skip Reading .DS_Store Files from SMB (from Apple Support) Permalink. Leopard was an improvement but not fantastic. By default SMB signing is disabled (except domain controllers), enabling it will come with performance payback (around 15% performance decrease). If you access SMB shares, this may affect you. One other possible culprit of slow performing SMB file shares may be SMB packet signing to be enabled on your Mac. Tiger specifically has serious issues with SMB. Hallo NG, soweit ich informiert bin, wird SMB signing verwendet, um -man in the middle attacken- während des Logon Prozesses zu verhindern. Using Terminal, Create /etc/nsmb.conf. To disable this, youâll need to edit (or create the file if itâs not there), as described by this Apple article: Turn off packet signing for SMB 2 and SMB 3 connections. Changing connection from SMB to AFP, reconnected share, no impact; The final change, disabling Delayed TCP ack, fixed it. SMB also provides some specific features, such as network printing, shared folder authentication, file locking, etc. In macOS High Sierra 10.13 and later, the default settings for browsing network folders such as Server Message Block (SMB) shares are ideal for most organizations and users. Server Message Block (SMB) 3 is the default way to connect to a server in macOS. The underlying problem is that Apple had it's own version of SMB â¦ Disabling SMB Signing (smb_signing) and it did show it as disabled in the terminal but had no impact for me. But you can make adjustments to optimize SMB browsing in enterprise environments. Each has its list of pros and cons, but for Mac users, AFP is typically the route to take. This article describes Server Message Block (SMB) signing. It requires the connection to perform a validate negotiate request after it authenticates. If you set the -identity-preserve option to true (ID-preserve), the SMB signing security setting is replicated to the destination. This feature was introduced in Windows 2000 and since then, itâs being supported by all versions of Windows operating systems. I disabled on both server and client and reconnected the share and restarted all services. My questions: 1) Is it worth it to enable SMB signing and reduce the performance or not? In macOS 10.13.4 and later, packet signing is off by default. SMB signing is designed to help improve the security of the SMB protocol. Packet signing for SMB 2 or SMB 3 connections turns on â¦ macOS has built-in support for SMB 1 / CIFS, SMB 2, as well as SMB 3. SMB signing deaktivieren (zu alt für eine Antwort) Valentin 2006-10-11 13:13:15 UTC. SMB signing is a security mechanism in the SMB protocol and is also known as security signatures. Für FileServer Zugriffe wird â¦ All SMB 3 sessions must be signed unless you connect as a guest or anonymously. We also recommend you to disable SMB signing on clients that access a Vess R2600 to gain better performance on your macOS 10.11.5 - 10.13.3 clients. In short, think of the three as Apple, Unix and Windows protocols. If I recall correctly, you're going to need to disable digital signing on the server and allow passwords to be transmitted in clear text. SMB signing was first available in Microsoft Windows NT 4.0 Service Pack 3 (SP3) and Microsoft Windows 98. When you set up a storage virtual machine (SVM) disaster recovery relationship, the value that you select for the -identity-preserve option of the snapmirror create command determines the configuration details that are replicated in the destination SVM.. First, and both crudest and simplest, is to force your Mavericks Mac to use SMB instead of SMB2.