[CentOS] smb protocol version

Mon Jun 15 19:32:52 UTC 2020
Christopher Wensink <cwensink at five-star-plastics.com>

I don't have any lines in my configuration file for any of the servers,
how can I tell what the default protocols are?

Are the defaults controlled by samba or the kernel?

Chris

On 6/15/2020 2:13 PM, Fred Smith wrote:
> On Mon, Jun 15, 2020 at 11:23:54AM -0500, Christopher Wensink wrote:
>> I have a handful of Linux Servers, running Centos 6.10, and 6.8 with the
>> main host running openvz w/ Centos 6.10 as the main OS.  Two of the
>> guests are running samba, sharing directories out to windows clients.
>>
>> I'm in the process of migrating servers over to vmware, using Centos
>> 7.8.  How can I determine what smb protocol version is being used in the
>> shares for each server?  I don't see the protocol specified anywhere in
>> smb.conf?
>>
>> Chris
> in my Centos-7 box, /etc/samba/smb.conf contains:
>
>         server min protocol = SMB3_11
>         client max protocol = SMB3_11
>         client min protocol = SMB3_11
>
>
> Some non-current windows versions don't support that version, you
> may need to try different values til you find one that works.
> Whatever you do, you don't want to use version 1.
>
> I'm forcing version 3.1.1 only because all the devices I have
> that support SMB also support 3.1.1, so if someone comes along with,
> e.g., an old laptop with XP, it won't be able to insecurely talk
> to my lan/wan. (and that's a feature, not a bug! ;=) )
>
> Also, you may wish to peruse this page:
>
> https://docs.microsoft.com/en-us/windows-server/storage/file-server/troubleshoot/detect-enable-and-disable-smbv1-v2-v3
>

-- 
Christopher Wensink
IS Administrator
Five Star Plastics, Inc
1339 Continental Drive 
Eau Claire, WI 54701
Office:  715-831-1682
Mobile:  715-563-3112
Fax:  715-831-6075
cwensink at five-star-plastics.com
www.five-star-plastics.com