YUM Client Configuration

Yum client configuration is a must work to do after an installation. At the same time configuring yum server is equally necessary for us. But first let’s configure yum client. The file needs to be saved with the extension of .repo. let’s

Configure Apache with SSL

On this article we will discuss how we can put ssl security on our web server or on our domain names on a web server. To do so, we need to generate ssl certificate and a ssl key and put those into our virtual hosts. In our previous post…

SSL theories and configuration.

Secure Socket Layer (SSL) is an improved version of Transport layer Security (TLS). Both of these protocols primary work is to secure data when there is a issue to transmit from one user end to another user end. Usually there are server…

How to use foreach in PHP

Foreach is one of the very commonly used codes in PHP.  In web development we usually work on database a lot and we need to create array a lot on online processing. So it is quite normal that a lot of array will generate in this process and…

Array formation in PHP

We have talked about array in one of our previous articles. But we gave very little information about array in this programming language. In this article we will discuss the array in detail. Array is one of the most important kinds of…

Introduction to VLAN

Virtual local area network (VLAN) is a logical fragmentation of a big network for several reasons. On this article we will discuss about VLAN. Few reasons and uses will be brought up regarding this issue. VLAN is a commonly used technique…

Introduction to Linux File Permission

On linux operating system, file permission is a very important issue. As a server system different users need t different kind of permission. More over a user may get permission on a single file and at the same time it may also necessary to…

Introduction to File System in Linux

File system is an important issue for any operating system. We can see that every operating system gicves us the freedom of choice to get a file system which will be suitable for the particular use. On linux we can find different 93 types…

Introduction to routing

Routing is one of the most important matters in computer networking. Usually in case of switching and routing both cases we need to apply the routing rules and protocols. But usually routing is handled by routers. Now a day layer 3 switches…

Introduction to switching

Switching is a common issue in computer networking. If we try to define this than we can simply say that based on some criteria if we change the route of the data then we can call it switching. This is one of the very basic things in…

Simple Hello world program using PHP

As we all know this programming language is almost similar to C and C++. The only difference is C and C++ works on any platform and PHP is a server side scripting and works on only servers that can compile PHP on both windows and Linux base…

Develop a basic structure of a webpage

Until now we have learn about the basic tags of a webpage. Now let’s start with a basic structure of a webpage. We will first learn which we are considering as a basic structure here. The below image we are considering as a basic structure.…

Basic tags used in head tag

In a html page we all know there is basic tag we need to use which is “Head”. We also call it the header of the webpage, because this tag holds all kind of summary of the webpage. Usually any search engine takes the simple record of a…

Most commonly used tags in body

a html page is consists of so many different elements, we are going to mention few most commonly used elements in here.  Let’s begin. Div tag Div is used to use for making divisions within the html pages. We can put different class or id…

Introduction to Subnetting

subnetting is the process to take some bits from the host part and add them to the network part to create or define a sub network within a network. For example, we can take some bits to the next octet to make the address 11.1.0.1 which is…

Understanding Subnet Mask

Subnet mask is an important component of networking. Subnet mask is kind of the component which activates the network. Without subnet mask the IP address cannot start communicating logically. In networking subnet mask defines the network…

Understanding IP address

In communication it is necessary to assign source and destination. Without these two parameters we cannot say who will communicate with whom. In case of computer networking the source and destination assigned using IP address. IP address is…

Introduction to networking devices

In networking there are several kinds of devices which are used to serve the purpose. In general we call them network devices. The common devices are Hub Repeater Modem Bridge Switch Router Brouter A hub is a simply a…

configure centos 7 as a router

It is not necessary now a day to create a router from this kind of operating system. But a lot of time we do it for experimenting or sometimes we do this to forward packet through the operating system for some particular reasons. Here I…

Basic firewall rules on centos 7

Firewalld is one of the strongest tools on Linux system. This tool basically used to control network traffic and port forwarding. Just in this tool we have very rich library for various kind of works. We will start this article by starting…

configure and secure SSH

On this article we will talk about a very popular service which is SSH or secure shell. As this is widely used services so this service needs to be secure more than any other services. Now a day most of the system administrator emphases on…

Understanding TCP/IP basics

Whenever we are connecting to a network by wireless connection or wired connection then we can find an IP address, we can check that IP address from our operating system settings. So it is a much known term to almost everybody and whoever…

how to make windows faster part 2

On this part we will know few more options about how we can make our windows faster. On our previous part we learn about four options. Those were some regular stuff a windows user needs to know. But on this part we will learn about few tips…

configure virtual network interface

On this article we will learn how to create a virtual network interface. But we need to know why we will do this. There are several reasons we may do this on a server.  Few of them are mentioned below. To assign more than one IP to a…

Introduction to JavaScript

I believe most of us here at least heard of this programming language at least once or twice in their academic life or from friends. I heard about it on a local bus first. I thought java and JavaScript is same thing. But later on I…

Introduction to Bootstrap

Bootstrap is a famous framework for the web developers now a day. Not very long ago web developers have to write CSS manually for the whole website or template. This particular framework helped thousands of web developers to minimize the…

Introduction to CSS

CSS means cascade style sheet. This tool is used for designing a straightforward HTML file. There are various ways to use it. We can directly put the CSS into the HTML. Also we can use link tag in the header of HTML file to link a css file.…

SEO Basic Steps for Beginner

Search engine optimization (SEO) is an old and one of the most important topic when we are talking about anything about online related business. A lot of rumors we can listen from the market that SEO is kind of a at its dead end, the google…

Reset forgotten root password

Documentation can be lost without a notice. We cannot help it all the time. Even oracle databases cannot guarantee you 100% back up. So it is quite possible that after 99.99% back you password document can be lost or corrupted. So what to…

Configure network interface part 2

In this article we will know only about how to configure network interface using text mode. So as we know there we have to work on four files those are given below: /etc/sysconfig/network-scripts/ifcfg-(Device Name) /etc/…

Configure network interface part 1

Network configuration on Linux is consists of four steps. We can do it both graphically and in text mode. In this article we will learn both of these ways, so that we can do this task using both the methods. What are the files we need to…

Introduction to HTML

Hypertext markup language is a structural language for developing a web page. Although we need help of CSS and javascript for making the web page attractive and engaging. On this article we learn about the basics of HTML Structure and the…

Introduction to Networking

Networking is the technology by which we connect two or more devices like computer, mobile phones, PDAs and IoT Devices. Network can be wired or wireless. Although a network serves the end devices but there are Internet networking devices…

Introduction to digital marketing

Digital marketing is the kind of marketing where only the digital media will be used. Although most of the time this digital media is limited within internet related Medias. This marketing can be paid or free. Usually the people know about…

Features of Python programming language

Python is one of the most popular programming languages in modern times. It becomes popular for its features. It has some very good features to make it popular among the programmers. On this article we will know about the features about…

Basics of C & C++

C is a very basic high level programming language. This is around 40 years old programming language, but the fun fact is, you can only use this programming language to its fullest only if you know the every working principle of a computing…

how to make windows faster part 1

Thousands of people are using windows, everyone have a common complain and that is a windows operating system is slow after few days of use. Windows is a very complicated operating system with a lot of facilities. We need to know how we can…

Basics of PHP language

On this post we will learn about the basics of PHP language. The is one of the most important part where we will get the idea about how we should design our coding for a better performance. So let’s start from here. The most basic parts…

Introduction to PHP programming

Before we start with PHP programming we need to know few things about PHP programming language. First of all it is a server side programming language. So it works with a server where we have to install a PHP compiler. Usually it works with…

Install Centos on Virtualbox or VMware

This is part we will learn how to install centos on any virtual machine. The procedure is same for both virtualbox and vmware. First of all we need to know what the basic uses of this operating system are. There are lots of uses we can…

create virtual machine on vmware

VMware is one the mostly spread virtualization software in present world. VMware workstation is software which is designed for enterprise use and end user use. This is very powerful, widely featured software where you can get almost every…

Create Virtual Machine on VirtualBox

Virtualbox is a high performance and customer oriented virtualization product for both enterprise and home user. The fun fact is it is open source software with General Public License Version 2.  As a home user anyone can get all the…

how to install VMware.

System requirement: All the processors expect Bonnell (intel), Saltwell (intel), Llano(AMD) and Bobcat (AMD). Any other processor minimum 1.3 GHz or faster than this. 2GB RAM minimum. Storage as required by the virtual…

How to Install VirtualBox

Prerequisite for virtualbox: Motherboard with VT-x or AMD-V virtualization technologies. Minimum 2 GB RAM. Intel or AMD processor. Storage. Platforms support vitualbox: Windows, Oracle Enterprise Linux, SUSE Linux,…

Why do we need Virtualization?

Virtualization is an environment that supports the hardware to create virtual machines on an operating system or on bare metal hardware. For the beginners, it is wise to use virtual machine for practice or even for creating test…