Shiny is an R package that allows Linux users to convert R code into an interactive webpage and documents online. You can take your shiny apps and share them in your organisation or the world. This article explains about how to set up shiny server on Ubuntu.Installing Shiny Server on UbuntuBefore installing Shiny server, we need to install the shiny R package. To install R packages, use the following command –$ sudo apt-get install r-baseThe sample output should be like this -Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are ... Read More

In this article, we will show you how to set up multiple SSL Certificates on a CentOS with Apache using a single IP address only. In general, a website administrator is restricted to use a single SSL Certificate per socket with an IP which will cost a lot of investment to the company. This restriction may lead them to buy multiple IP addresses for HTTP’s websites for their domain hosting or buy hardware that allows them to utilize multiple network adapters.This is allowed by an extension to the SSL protocol called Server Name Indication (SNI). Most current desktops and mobile ... Read More

In this article we will learn and configure NFS (Network File System) which is basically used to share the files and folders between Linux systems. This was developed by Sun Microsystems in 1980 which allows us to mount the file system in the network and remote users can interact and the share just like local file and folders.Features of NFSNFS can be configured as a centralized storage solution.No need of running the same OS on both machines.Can be secured with Firewalls.It can be shared along with all the flavors of *nix.The NFS share folder can be mounted as a local ... Read More

This article will show you – how to configure the DNS caching or forwarding server in the local environment with the use of DNS. DNS (Domain Name System) are often critical servers to get right, when we are learning things such as configure websites and servers. Most of the people will choose to use the DNS servers which is provided by the hosting company or the domain controllers.Caching DNS ServerThe configuration will cache the DNS server. This type of servers are called as resolvers because it handles recursive queries and can handle the grunts of tracking the DNS data from ... Read More

In this article, we will learn how to install and configure the Squid proxy server. A Squid proxy server is an open source and GPLD proxy with web cache. The Squid proxy server has various uses as we can speed up the web server by caching the repeated requests from the clients and we can use it for name server query. We can use it for looking at the network or a group of people for sharing the network resources.Squid proxy is a high-performance proxy caching server for Web clients which supports FTP, gopher, and HTTP data objects. Squid can ... Read More

NGINX is a free, open-source, high-performance HTTP server and a reverse proxy, also known as IMAP/POP3 proxy server. NGINX is famous for its high performance, stability, rich feature set, simple configuration, and low resource consumption. In this article, we will explain about ” Nginx WebServer Best Security Practices”.sysctl.conf is a simple file containing sysctl values to be read in and set by sysctl. To open sysctl.conf, use the following command –$ sudo vim /etc/sysctl.confThe sample output should be like this –## /etc/sysctl.conf - Configuration file for setting system variables # See /etc/sysctl.d/ for additional system variables. # See sysctl.conf (5) ... Read More

Static IP Address and Dynamic IP Address are both used to identify a computer on a network or on the Internet. Static IP address is provided by the Internet Service Provider and remains fixed till the system is connected to the network. Dynamic IP address is provided by the DHCP, generally a company gets a single static IP address and then generates the dynamic IP address for its computers within the organization's network. Read through this article to find out more about static and dynamic IP addresses and how they are different from each other. What is ... Read More

Both MAC Address and IP Address are used to identify a computer on a network or on the Internet. MAC address is provided by NIC Card's manufacturer and gives the physical address of a computer. IP address is provided by the Internet Service Provider and is called the logical address of a computer connected on a network.Read through this article to find out more about IP address and MAC address and how they are different from each other.What is an IP Address?Every unique instance linked to any computer communication network employing the TCP/IP communication protocols is given an IP address.When ... Read More

Digital as well as Analog Systems, both are used to transmit signals from one place to another like audio/video. Digital systems use binary format as 0 and 1, whereas analog systems use electronic pulses with varying magnitude to send data. Read through this article to find out more about digital and analog systems and how they are different from each other. What is a Digital System? A system of components like a computer which uses discrete time signals to operate is called a digital system. Digital systems uses such signals that have square shaped waveforms. Digital systems first accept the ... Read More

A Server is a central place where information and programs are stored and accessed by applications over the network. A Web Server is a server which accepts a request for data and sends the relevant document in return, whereas an Application Server contains an EJB container component as well to run the enterprise applications. In this article, we will discuss the important differences between web server and application server. But before that, let’s have a look into their basics so that it will be easy to understand the differences. What is a Web Server? A Web Server is ... Read More