[Samba] Default route mandatory on a Samba member server?

[Peter Milesson]

On 17.01.2023 14:22, Rowland Penny via samba wrote:
>
>
> On 17/01/2023 13:13, Kees van Vloten via samba wrote:
>>
>> Op 17-01-2023 om 14:02 schreef Rowland Penny via samba:
>>>
>>>
>>> On 17/01/2023 12:49, Peter Milesson via samba wrote:
>>>> Hi folks,
>>>>
>>>> Is a default route and gateway mandatory on a Samba member server?
>>>
>>> I would have thought they were mandatory on any computer, never mind 
>>> Samba.
>>
>> No, they are not required on any computer.
>>
>> It is just to give you access to other networks than your own. And in 
>> nearly al situations that is what you want.
>> You probably need internet access (i.e. default route/gw) to install 
>> samba (or do you have an apt-proxy in the local network?)...?
>>
>> - Kees
>>
>>>
>>>>
>>>> The AD DCs, the workstations and the Samba member server are on the 
>>>> same network segment. As the member server only serves files to the 
>>>> local network, I assume that neither gateway, nor default route are 
>>>> necessary. For updates, gateway and default route could be defined.
>>>
>>> I am struggling to understand why you wouldn't set them (or want 
>>> to), how is the computer supposed to connect to anything ?
>>>
>>> Rowland
>>>
>>>
>>
>
> Perhaps you could get away with not setting the gateway, but surely 
> you need to set the route ? Otherwise, how does the computer know 
> which network device to use (even if you only have one) and what 
> network to connect to.
>
> I have in the past had instances of no connection to my local network 
> when setting up a new machine and this always came down to the route 
> not being set.
>
> Rowland
>
>
Hi Rowland,

Maybe I was a bit unclear, there is connection to the local network, and 
DNS works for devices on the local network. One of the issues is also to 
avoid hitting the default router, which seems to slow down throughput 
substantially. I specifically don't want any external access during 
normal operations. Changing the network definitions for maintenance and 
updates is a matter of a few seconds, so external connectivity is not an 
issue.

Best regards,

Peter