BENEFITS OF LINUX

Linux can give you: 1. A modern, very stable, multi-user, multitasking environment on your inexpensive PC hardware, at no (or almost no) monetary cost for the software. Linux is a rich and powerful platform don’t think of it as a “poor people” operating system. Out-of-box Linux has as much capability as MS Windows NT with … Read more

LINUX

INTRODUCTION It is a commonly held principle in many areas of business that if you can‘t measure something quantitatively, it will be difficult to raise the quality objectively. The applicability of this statement to the world of IT security is clear. Without having some form of metrics in place, it is tough, if not impossible, … Read more

Free Let’s Encrypt SSL certificates on Centos 6

free ssl certificate

Free Let’s Encrypt SSL certificates on Centos 6 Let’s Encrypt installation The Let’s Encrypt Client is a fully-featured, extensible client for the Let’s Encrypt CA that can automate the tasks of obtaining certificates and configuring web servers to use them. The installation is simple but in my case on CentOS 6.x I first needed to … Read more

how to add new hard disk in centos

Add new hard disk to centos linux

How to add new hard disk in centos Finding the New Hard Drive in CentOS 6 Assuming the drive is visible to the BIOS it should automatically be detected by the operating system. Typically, the disk drives in a system are assigned device names beginning hd or sd followed by a letter to indicate the … Read more

Clustering

Clustering The word “clustering” can mean different things to different people. Some people would say clustering is simply having a replicated system on standby available to be turned on when the primary system fails. To others, clustering is having several systems working in concert with one another, with replicated data, fully redundant, and infinitely expandable. … Read more

Asterisk Gateway Interface (AGI)

Asterisk Gateway Interface (AGI) The Asterisk dialplan has evolved into a simple yet powerful programming interface for call handling. However, many people, especially those with a prior programming background, still prefer implementing their custom call handling in a different programming language. Using another programming language may also allow you to utilize existing code for integration … Read more

Asterisk Manager Interface (AMI)

Asterisk Manager Interface (AMI) The Asterisk Manager Interface (AMI) is a system monitoring and management interface provided by Asterisk. It allows live monitoring of events that occur in the system,as well as enabling requests for Asterisk to perform some action. The available actions are wide-ranging and include things such as returning status information and originating … Read more

Fax

Fax What Is a Fax? A fax machine allows a facsimile (copy) of a document to be transmitted across a telephone line. In the Internet age, this sort of functionality seems useless; however, prior to ubiquitous Internet access, this was a very useful thing indeed. Fax machines scan a document into a digital format, transmit … Read more

Text-to-Speech Utilities(external services)

Text-to-Speech Utilities Text-to-speech utilities are used to convert strings of words into audio that can be played to your callers. Text-to-speech has been around for many years, and has been continually improving. While we can’t recommend text-to-speech utilities to take the place of professionally recorded prompts, they do offer some degree of usefulness in applications … Read more