[pptp-server] Problems with PPTP

[Fernando Monteiro Duarte]

   Hi,


   I/m beginnig to configure a PPTP server, and I have some doubts, so
if someone can help me, It'll be very good for me...

   1ª - How restrict 1 conection per user;
   2ª - How can map internal network from remote network;
   3ª - How define the Gateway would be designated for clients;
   4ª - How restrict IP's can do the VPN.

   If anybody can help me or can indicate a good literature that I can
find these answers, will help me a lot.

   Thanks in advance,
   Fernando Monteiro Duarte