[vpn-help] NDIS or Dialup Modem interface

Matthew Grooms mgrooms at shrew.net
Mon May 16 12:02:55 CDT 2011


On 3/29/2011 7:46 PM, kevin vpn wrote:
> On Tue, 29 Mar 2011 22:16:25 +0100
> "Andrew Keys"<akeys at cooperkeys.demon.co.uk>  wrote:
>
>> Hi
>>
>> Does the Shrew client work with a dialup broadband interface or does
>> it only work with an NDIS interface?  I've noticed that the Shrew
>> Soft Lightweight Filter service only appears to bind to 'network
>> connections' and not to 'dialup connections' - is this significant?
>> I have been unable to get a working connection with a Dell 5520 WWAN
>> card which only provides a 'dialup connection'.
>>
>
> Hi Andrew,
>
> I suspect, based on what you've observed, that Shrew only works with
> NDIS connections and not dial-up connections.
>
> This might be a question that can be confirmed by the development team.

The MS dialup adapter is really really hard to work with. It basically 
does everything in a backwards, may-as-well-be-undocumented way ( from a 
LWF filter perspective ). Its easy to read packets from but really, 
really difficult to write packets to. I've done my best to get the 
client to work with the few options I have to test with locally ( PPP 
dialup networking, PPPOE, and a few Wifi USB dongles that act like 
dialup adapters ). All of them work as far as I can tell. I wouldn't be 
surprised if there are adapters in the wild that it won't work with.

-Matthew



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