Dhika CikulJust Want to Learn and Share

The purpose of this document is to lead the users to configure theirs OpenVPN clients to access to a VPN server. We will see how to install and configure the most used OpenVPN’s GUI for Microsoft Windows, Linux, Mac OS X and Windows Mobile for Pocket PC. At the end of the document we will learn to use the OpenVPN’s command line interface. This last possibility is useful, because the openvpn command, which you can execute by using the prompt (Unix Shell or Windows Prompt) accepts the same parameters and has the same behavior regardless from which Operating System you use. In addition, you could use the openvpn command in a script to automatically start the VPN connection.

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Hyper-threading is Intel’s technology that enables multiprocessor servers to act as if they had twice as many processors installed. its simultaneous multithreading implementation in their Pentium 4, Atom, and Core i7 CPUs. A processor with hyper-threading enabled is treated by the operating system as two processors instead of one. In essence, HT Technology converts a single physical processor into two virtual processors. For more details see Intel’s site.

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Sometimes we need to kill process or application on *nix system. For single process or application we should use :

kill -9 pid

Which PID is process id used by application.

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