3.5 Planning for SMB Changes in OES 2018 and later

OES 2018 (and later) server and the SMB clients negotiate to determine the SMB dialect with the highest level of functionality that both the client and server support. However, SMB v3 (SMB 3.0) is the default protocol in OES 2018 and later.

If you set the protocol dialect SMB v2, the following configuration options will become invalid:

LM Compatibility Level
Unicode Support
Info Level Pass-through capability

If you set the protocol dialect to SMB v1, CIFS server will not enforce File System change notification.

IMPORTANT:Domain pass-through authentication is supported for backward compatibility only. When authentication mode is changed/set to Third party authentication, Clients can connect only with NT LM 0.12 (CIFS/SMB v1) protocol version/dialect.

Table 3-1 Client/SMB compatibility matrix

Client Operating Systems		OES 2018 SP2 Server
Client Operating Systems		NT LM 0.12 (SMB v1) over TCP 445	SMB 2.002 (SMB v2) over TCP 445	NT LM 0.12 (SMB v1) over TCP 139	SMB 2.002 (SMB v2) over TCP 139
Microsoft Windows 7		SMB v1	SMB v2	SMB v1	SMB v2
Microsoft Windows 8.1		SMB v1	SMB v2	SMB v1	SMB v2
Microsoft Windows 10		SMB v1	SMB v2	SMB v1	SMB v2
Windows Server 2008		SMB v1	SMB v2	SMB v1	SMB v2
Windows Server 2012		SMB v1	SMB v2	SMB v1	SMB v2
Windows Server 2016		SMB v1	SMB v2	SMB v1	SMB v2
Macintosh OS X 10.12.x (Intel, 64-bit)		SMB v1	SMB v2	SMB v1	SMB v2
Macintosh OS X 10.13.x (Intel, 64-bit)		SMB v1	SMB v2	SMB v1	SMB v2
Macintosh OS X 10.14.x (Intel, 64-bit)		SMB v1	SMB v2	SMB v1	SMB v2
SUSE Linux Enterprise Desktop 11 SP3	mount Command	SMB v1	SMB v2	SMB v1	SMB v2
SUSE Linux Enterprise Desktop 11 SP3	File Browser	SMB v1	SMB v1 Through File browser, the client always negotiates over SMB v1 even when SMB v2 dialect is selected on the server side.	SMB v1	SMB v1 Through File browser, the client always negotiates over SMB v1 even when SMB v2 dialect is selected on the server side.
SUSE Linux Enterprise Desktop 12	mount Command	SMB v1	SMB v2	SMB v1	SMB v2
SUSE Linux Enterprise Desktop 12	File Browser	SMB v1	SMB v1 Through File browser, the client always negotiates over SMB v1 even when SMB v2 dialect is selected on the server side.	SMB v1	SMB v1 Through File browser, the client always negotiates over SMB v1 even when SMB v2 dialect is selected on the server side.

NOTE:Accessing OES shares through SMB V2 (SMB 2.002) from SLED clients might fail for Active Directory users. Micro Focus plans to fix this in a future release.

Table 3-2 Client/Port support matrix

	Connect		Reconnect
Client Versions	Default Port	Fall Back Port	Default Port	Fall Back Port	Remarks
Windows 7	445	139	445	139	This is the standard/expected behavior on client side. Changes can be done on the client side to switch protocol and/or disable/enable certain port to use another port. For example Windows 8.1/10, if the client is modified to use SMB V1 then 139 port will work as well.
Windows 8	445	139	445	139
Windows 8.1	445	139	445	X
Windows 10	445	139	445	X
Windows Server 2008	445	139	445	X
Windows Server 2012	445	139	445	X
Windows Server 2016	445	139	445	X
MAC 10.X	445	139	445	139
SLED 12	445	139	445	139