Not sure if this is the same issue you are facing, but I think the MTU 
setting can cause problems here if not set correctly.

I had a similar problem where I couldn't scp more then x k of a file 
(something like 110k), narrored it down to the MTU and when I change it 
in my linux pptpconfig client to mtu 1400, all started working.

Also if you have restrictive firewall rules in your PPTP rule, try to 
open it up for a test to see if you still have the problem (to see if 
its a rule issue or other issue).

Louis


KH Lau wrote:
> Hi,
>  
> Just seup FTP server for internal use via PPTP to Internet users everything
> seems normal such as login and verify password but list the directory, the
> operation will abort wait a moment any help to me is appreciate.
>  
> Regards,
>  
>   
>  
>  
>