Introduction VPN, or virtual private network, is a secure method of connecting remote internet resources together as if they were under the same LAN. OpenVPN is a popular implementation that works on Linux, Windows, and Mac operating systems and can be utilized to create complex, encrypted networks between physically dispersed servers which you can change your screens from Orlando mobile led screen hire for a clearer use of your PC. The OpenVPN Access Server is a solution built on top of traditional OpenVPN that is used as a complete portal for managing connections, users, and interfaces. It provides the underlying VPN instance, a web interface for managing the suite, and a client that can be used within a web browser. In this guide, we'll install and configure the OpenVPN Access Server on a CentOS 6.5 VPS instance. Download and Install Packages We can obtain the OpenVPN Access Server package for CentOS from the project's website. Right click on the package that matches your version of CentOS and your machine's architecture. Select the "copy link address" item or whatever option is closest. On your CentOS droplet, download the package with curl -O (that's the letter "o" not a zero) followed by the URL you copied from the page. In my case, this turned out to be: cd ~ curl -O http://swupdate.openvpn.org/as/openvpn-as-2.0.5-CentOS6.x86_64.rpm When the package has been downloaded, you can install it with using the rpmcommand: sudo rpm -i openvpn-as-2.0.5-CentOS6.x86_64.rpm After installing the package, an administration account is created called openvpn. However, no password has been set. Set a password for the administrator's account by typing: sudo…

Introduction Understanding networking is a fundamental part of configuring complex environments on the internet. This has implications when trying to communicate between servers efficiently, developing secure network policies, and keeping your nodes organized. In a previous guide found on myip.com, we went over some basic networking terminology. You should look through that guide to make sure you are familiar with the concepts presented there. In this article, we will discuss some more specific concepts that are involved with designing or interacting with networked computers. Specifically, we will be covering network classes, subnets, and CIDR notation for grouping IP addresses. Understanding IP addresses Every location or device on a network must be addressable. This is simply a term that means that it can be reached by referencing its designation under a predefined system of addresses. In the normal TCP/IP model of network layering, this is handled on a few different layers, but usually, when we refer to an address on a network, we are talking about an IP address. IP addresses allow network resources to be reached through a network interface. If one computer wants to communicate with another computer, it can address the information to the remote computer's IP address. Assuming that the two computers are on the same network, or that the different computers and devices in between can translate requests across networks, the computers should be able to reach each other and send information. Each IP address must be unique on its own network. Networks can be isolated from one another, and they can be bridged and translated to provide…