[Samba] NAS connection problem to Samba DC

[Rowland penny]

On 03/06/2020 18:13, Miguel Angel Coa M. via samba wrote:
> Hi
> Updated Samba to 4.11 and now i've problem with NAS server (connection
> problem) . Searching information in the message i've the next message:
>
> [.........................]
> Jun  3 13:01:51 sambadc04 samba[10310]:
>   dcesrv_netr_creds_server_step_check: [NAS01] is not using schannel
> Jun  3 13:02:36 sambadc04 samba[10310]: [2020/06/03 13:02:36.427527,  0]
> ../../source4/rpc_server/netlogon/dcerpc_netlogon.c:634(dcesrv_netr_creds_server_step_check)
>
> Jun  3 13:02:36 sambadc04 samba[10310]:
>   dcesrv_netr_creds_server_step_check: [NAS-PRUEBA-AGAR] is not using
> schannel
> Jun  3 13:02:36 sambadc04 samba[10310]: [2020/06/03 13:02:36.435098,  0]
> ../../source4/rpc_server/netlogon/dcerpc_netlogon.c:634(dcesrv_netr_creds_server_step_check)
>
> [.........................]
>
> I try, setting the "server schannel = auto"  but is deprecated.

server schannel was set to 'yes' when Samba 4.8.0 was released and 
marked as deprecated at the same time. Not that this makes any 
difference, it is your NAS that isn't using it, so you will probably 
have been getting those messages in your logs before you upgraded.

I think you will be running into another change that happened at Samba 
4.11.0, the defaults for 'client min protocol' and 'server min protocol' 
both changed to 'SMB2_02'. this will mean no SMBv1 and your NAS probably 
needs SMBv1.

Rowland