[Samba] Windows 10 cannot connect without SMB1
K.R. Foley
kr at cybsft.com
Tue Mar 2 16:32:01 UTC 2021
On 2021-03-02 10:12, Rowland penny via samba wrote:
> On 02/03/2021 13:55, K.R. Foley via samba wrote:
>>
>> Initially I started testing with two VMs on the same private network,
>> a Windows client and a Linux VM running Samba 4.11.1. These VMs
>> were/are not physically isolated, but they are on a separate subnet
>> with no routing to/from any other subnet. I have to work in this
>> environment because they are not physical PCs. I got this working, but
>> it is possible that they might have been communicating via SMB1. I
>> then brought up an AWS instance because that is where the initial
>> Samba server will reside (that is why there are different subnets and
>> the VPN). Configured everything, but with 4.11.13. In the meantime the
>> Windows VM has been updated. Now it won't support SMB1 and now my
>> problems start.
>>
>> Last night, I went back to my initial test VM for the Samba server.
>> The two VMs are on a separate subnet with no routing to/from any other
>> network and the same problem persists. I get the exact same errors.
>> The client still thinks that the server is trying to use SMB1.
>>
>> Again there is no routing between this subnet and any other subnet.
>> However, the VMs are not physically isolated. This is not really
>> possible in the current environment. There is an older Samba NT4 PDC
>> on the same ESXI with the test VMs, but there is no IP routing and
>> also the domain names are different. Is it possible that this is
>> causing a problem?
>>
>
> OK, I have downloaded the latest Win10 ISO, installed it in a VM and
> it joined my Samba 4.13.2 AD domain. I am now of the opinion that it
> is something in your setup that is causing this and I think it may be
> your PDC which relies on two things. SMBv1 and netbios. Netbios does
> not use dns, so this may be replying to the Win10 search for a DC.
>
> Rowland
>
Thanks. This evening I am going to try isolating the VMs completely. If
I am unable to isolate them completely, I may just turn off the PDC
momentarily to test. I will report back with my results.
kr
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