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Re: Ubuntu 18.04 acting as client to Windows "server" - can't see list of Windows PC's shares or connect to a share

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Jorgen Grahn wrote:
> On Mon, 2018-09-03, Dan Purgert wrote:
>> NY wrote:
> ...
>>> I have a network-connected printer which shares its SD card reader,
>>> and the same operations allow Ubuntu to access and display its share
>>> list. I was hoping to get a LAN trace of that, to compare and look for
>>> differences, but I'm thwarted by modern networking technology (a
>>> switch rather than hub) which won't distribute any traffic to the
>>> monitoring PC (Windows - Wireshark) if its source (Ubuntu) or
>>> destination (printer) is on other Ethernet ports. I've got a bit of a
>>> logic puzzle:
>>
>> You have to enable "promiscuous mode" on the interface. You should still
>> see the traffic
>
> That doesn't sound right.  If you have three hosts A, B, C connected
> through a normal switch, A is going to see very little of the B--C
> communication because the switch is smarter than a hub and won't flood
> all traffic on all ports.  A can put its NIC into promiscuous mode,
> but that won't help when no traffic is sent out on the corresponding
> port!

Works fine when dealing with dumb switches around here. Although it does
work better when one can use a managed switch and mirror the port.


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Ubuntu 18.04 acting as client to Windows "server" - can't see list of Windows PC's shares or connect to a share "NY" <me@privacy.net> - 2018-09-02 20:18 +0100
  Re: Ubuntu 18.04 acting as client to Windows "server" - can't see list of Windows PC's shares or connect to a share Dan Purgert <dan@djph.net> - 2018-09-03 10:40 +0000
    Re: Ubuntu 18.04 acting as client to Windows "server" - can't see list of Windows PC's shares or connect to a share Jorgen Grahn <grahn+nntp@snipabacken.se> - 2018-09-03 14:55 +0000
      Re: Ubuntu 18.04 acting as client to Windows "server" - can't see list of Windows PC's shares or connect to a share Dan Purgert <dan@djph.net> - 2018-09-03 15:54 +0000
        Re: Ubuntu 18.04 acting as client to Windows "server" - can't see list of Windows PC's shares or connect to a share "NY" <me@privacy.net> - 2018-09-03 21:04 +0100
    Re: Ubuntu 18.04 acting as client to Windows "server" - can't see list of Windows PC's shares or connect to a share "NY" <me@privacy.net> - 2018-09-03 20:58 +0100
      Re: Ubuntu 18.04 acting as client to Windows "server" - can't see list of Windows PC's shares or connect to a share Dan Purgert <dan@djph.net> - 2018-09-03 20:16 +0000

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