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The best way to think of the free tier to Amazon Web Services is as a stepping-stone. It's a way to get your feet wet with the basic mechanisms of AWS and EC2; to understand Amazon's way of handling virtual machine instances, storage, data, and networking; and to create something that can eventually be hosted on a full-blown, for-pay AWS instance. It's also a way to learn how to manage and constrain AWS usage -- if you're not careful you may end up paying for your "free" AWS usage after all. In this article, we'll look at what the free tier offers you and on what terms, then take a closer peek at what's possible or practical within those constraints. In the long run, any serious AWS user will want to take fuller advantage of what the Amazon cloud has to offer -- but why not make the most of the free resources in the meantime? The free tier is a great way to find one's legs with AWS, start some projects, and maybe even build a functional applica

WHAT IS PLEX? Plex is a free media server and player software that you can use to organize, stream, and share your videos, photos, and music. Think of it as your own personal Netflix service for your media. You set up a Plex server and can then use the Plex client apps on your web browser, phone, TV, and more to access your media. See the official Plex video  here  for more details.  This guide will walk you through installing Plex, setting up remote access...I will be using an Ubuntu 16 server-minimal installation for this guide, but Plex is available for a very wide variety of devices and systems. The installation steps may vary some, but the management and access will be very similar across all options. REQUIREMENTS The requirements here are pretty simple as most of this will be using the Plex web GUI. You do need a few things to get started: A server to install Plex on (If your server does not have a GUI) A computer to configure Plex from the Web interface  A basic

INTRODUCTION This guide is meant as an introduction to iptables and covers basic packet filtering using this tool on Centos 7. The goal is to learn to work with some basic options so you can adapt them to your particular needs. For this reason we will not cover any iptables extensions in this guide. GETTING STARTED The term iptables is used to define the Linux kernel firewall, part of the Netfilter project and the user space tool used to configure this firewall. The Netfilter framework provides a set of facilities that are used by iptables to hook functions that are designed to perform operations on packets. The Netfilter project defines it as  "a generic table structure for the definition of rulsets" . The structure of iptables is based on tables, chains and rules.    INSTALLATION To install iptables in Centos 7 is very simple. Just run: yum install iptables iptables-services STARTING AND STOPPING THE SERVICE To start or stop the iptables service t