Hello Marco,

Personally, I recommend using the FreeRADIUS  Linux-based software that also contains the support for the VQP/VMPS.  The reason to use the RADIUS service is that gradually, you will  probably be interested in moving towards RADIUS authentication instead  of VMPS, and having the same software would allow you to perform the  transition more easily. There are also other open VMPS solutions  available but personally, I think that for the future, the best approach  would be to use the FreeRADIUS.

I cannot guarantee that the plain text file your SQL  application generates is of the same syntax that the FreeRADIUS uses.  Then again, I believe that the SQL can be easily adapted to produce the  FreeRADIUS config file syntax, or even better, that the FreeRADIUS is  capable of directly accessing the SQL database.

I am not proposing my solution as the best available but I believe you would be satisfied.

Best regards,

Peter