Hi,
Could it have something to do with SMB Multichannel...?
Sent with [Proton Mail](https://proton.me/) secure email.
------- Original Message -------
On Wednesday, September 28th, 2022 at 19:37, Selva Nair <selva.n...@gmail.com>
wrote:
> Hello,
>
> On Wed, Sep 28, 2022 at 1:10 PM Sebastian Arcus <s.ar...@open-t.co.uk> wrote:
>
>> On 27/09/2022 21:09, tincantech wrote:
>> Some updates from today's testing:
>>
>> Test case 1
>>
>> Topology: subnet
>> Adapter: WinTUN
>> Netbios over TCP/IP: disabled or enabled
>> Result: 300kbs (for both states of NetBIOS over TCP/IP)
>>
>> Test case 2
>>
>> Topology: subnet
>> Adapter: TAP
>> Netbios over TCP/IP: disabled or enabled
>> Result: 900Mbs (for both states of Netbios over TCP/IP)
>>
>> Essentially using "topology subnet" seems to work fine with the TAP
>> adapter, but routes all smb traffic through the tunnel with the WinTUN
>> adapter, even when Netbios over TCP/IP is disabled.
>>
>> I'm not sure if this actually clarifies things or makes it worse. I
>> re-run the tests several times, and rebooted the machine after changing
>> the settings on the adapters and before running the tests
>
> This is getting more and more mysterious. Somehow SMB traffic is using the
> VPN IP and hence getting routed through the tunnel. DNS/netbios would have
> been the obvious culprit, but that doesn't seem to be the case... As Windows
> has no built-in policy routing facilities (does it?), probably there is some
> third party port forwarding running on the client? However, that should have
> affected both wintun and tap-windows tunnels. Can you mount a shared folder
> using the LAN IP of the server like \\192.168.112.xx and see whether that
> makes a difference?
>
> tcpdump could also help figure out why there are two smb streams one using
> LAN IP and other using the VPN, which is carrying what traffic, which one
> gets established first etc..
>
> Selva
_______________________________________________
Openvpn-users mailing list
Openvpn-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/openvpn-users
