Month: December 2014

Link: How to Setup a Complete Mail Server (Postfix) using ‘SquirrelMail’ (Webmail) on Ubuntu/Debian

Creating a mail server on Linux powered machines can be one of the most essential things that every system administrator needs to do while configuring his servers for the first time, if you don’t know what it means; it’s simple, if you have a website like “example.com”, you can create an email account like “username@example.com” to use it to send / receive emails easily instead of using services like Hotmail, Gmil, Yahoo Mail.. etc.

In this article, we’ll learn how to do so by installing the Postfix with “SquirrelMail” webmail application and its dependences on Debian/Ubuntu machines.

Full article here:
How to Setup a Complete Mail Server (Postfix) using ‘SquirrelMail’ (Webmail) on Ubuntu/Debian (Tecmint)

Link: Monitorix – An Open Source, Lightweight System Monitoring Tool For Linux

Monitorix is a free, Open Source monitoring tool that can be used to monitor as many services and system resources as possible. Unlike other monitoring tools, it is very simple to install, configure and monitor the systems. Initially, it was developed to support only the RPM based systems such as Red Hat, CentOS etc., but, later it is expanded its support to other distributions like Debian/Ubuntu, and BSD systems such as FreeBSD, NetBSD, and OpenBSD.

Full article here:
Monitorix – An Open Source, Lightweight System Monitoring Tool For Linux (Unixmen)

Link: Some hints for getting free-to-air satellite channels into the Electronic Program Guide in Kodi (or another frontend)

If you are running a satellite backend system such as TVHeadEnd or MediaPortal (or MythTV, if you are one of the lucky few that can actually get it to work), and you use Kodi or the MythTV frontend, then it is possible to populate the schedule grid with listings from many sources. Note I did not say that it is easy, just that it is possible. The key is to use an external program … These are commonly referred to as “schedule grabbers”, or just “grabber” programs.

The real trick is figuring out how to use one of those programs. …..

Some hints for getting free-to-air satellite channels into the Electronic Program Guide in Kodi (or another frontend) (Free-To-Air America)

Link: 10 ‘free’ Commands to Check Memory Usage in Linux

Linux is one of the most popular open source operating system and comes with huge set of commands. The most important and single way of determining the total available space of the physical memory and swap memory is by using “free” command.

The Linux “free” command gives information about total used and available space of physical memory and swap memory with buffers used by kernel in Linux/Unix like operating systems.

Full article here:
10 ‘free’ Commands to Check Memory Usage in Linux (Tecmint)

Link: How to Clone and Migrate WordPress Sites the Easy Way

Cloning and migrating a WordPress website is never an easy task. Even though you can use all the help provided by the WordPress community, the manual operation is always a daunting task, especially if you are a beginner. Even a small unintentional mistake can cause some serious issues like missing posts or media, corrupted permalinks, extended period of downtimes, etc. In the worst case scenario, it may completely ruin your WordPress installation. To save all the hassle, here is a single plugin that can easily clone and migrate WordPress sites without messing with a whole lot of complicated settings.

Full article here:
How to Clone and Migrate WordPress Sites the Easy Way (Make Tech Easier)

Link: Set Up SSH Tunneling on a Linux / Unix / BSD Server To Bypass NAT

I’m a new Linux / Unix system user. How can I set encrypted tunnel between my desktop/laptop computer and server in a remote data center to bypass the limits in a network? How do I create a reverse SSH tunnel on Unix-like systems?

SSH tunnelling can be thought as a poor-man’s-VPN. It is handy in situations where you would like to hide your traffic from any body who might be listening on the wire or eavesdropping. You can use such tunnel between your computer and your Unix/BSD/Linux server to bypass limits placed by a network or to bypass NAT, and more.

Full article here:
Set Up SSH Tunneling on a Linux / Unix / BSD Server To Bypass NAT (nixCraft)

Link: How to install an Opensource VPN Server on Linux

One of the most concerning factors to me while browsing, Is how can I ensure that my data remains private and secure ? While searching for answers, I came cross a number of ways in which you can remain anonymous like using a proxy website. But still using a third party service was not assuring enough. What I needed was a software which could be installed and run by me thus ensuring that I and only I would have access to the data.

So what is such a software called?

It’s called a VPN service or short for Virtual Private Network. It allows you to encrypt your data via SSL when you connect through it. Since the connection is encrypted even your ISP cannot see what your browsing.

In this Linux Tutorial , I will be installing an OpenVPN Access Server on CentOS 7 . OpenVPN is easy to use, OpenSource and has community based support. It has clients for Windows, Android, and Mac.

Full article here:
How to install an Opensource VPN Server on Linux (techarena51.com)