How to check files safely?

Mar 30, 2012 at 2:17 AM

First,sorry about my poor english.Yeaterday I finished a winform to connect VPN. Use th example in DotRas is easy to do.But the program is try to let peopel can check files while they are travel outside.Will PPTP  a safe way to used in my program?I see someone use L2Tp or IPSec.But too many informations make me confuse.I'm glad someone can show me a direction.THX