Hi, I am novice in Linux network programming. I have to create a vpn tunnel using openvpn in linux. I plan to stick with Gnome only ( kvpnc is not favorable to me since i heard that it relies on qt ). So, anybody can give me some pointer to use a library which I can use it for openvpn calls? Similarly, I would like to add PPTP support in my program( in Linux). So, what is the library should I consider for this too? Any portability of these libraries in MacOS X?