Server IP or DNS Name: PPTP server’s IP Address or DNS Name 
Remote Subnet: the network of the remote PPTP server 
Remote Subnet Mask: subnet mask of remote PPTP server 
MPPE Encryption: enable or disable Microsoft Point-to-Point Encryption。 
MTU: maximum Transmission Unit 
MRU: maximum Receive Unit 
NAT: network Address Translation 
User Name: user name to login PPTP Server. 
Password: password to log into PPTP Server.