How to Enable SSH on Ubuntu

by H FatimaSeptember 19, 2019no comment

SSH or Secure Shell is a simple networking protocol that enables secure data communication. It allows safe remote shell services, command execution and ensures security between two connected devices. These devices can be connected over a secured or an unsecured network running SSH client programs. Generally, SSH enables users to remotely connect to a server. Port 22 is the standard port for SSH, however, users can transfer files through SFTP (SSH File Transfer Protocol/Secure File Transfer Protocol) or SCP (Secure Copy). 

Enabling SSH doesn’t require in-depth technical knowledge, so you should be able to do it easily by following a bunch of steps. In this tutorial, we’ll cover the reasons you should enable SSH access and learn how to enable SSH on Ubuntu. 

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Configuring a Firewall in Linux – A Step-by-Step Guide

by H FatimaSeptember 18, 2019no comment

It is important for every system to be well protected, be it your home computer or your server. In this article, we’ll understand how to configure a Firewall in Linux to keep your system safe and protected from malicious viruses. 

Let us begin by understanding what a firewall is.

A firewall is a network security software that monitors the incoming and outgoing traffic in your network. In simple words, a firewall is like a virtual barrier that is put so that the least damage can occur. Thus, the barrier is placed between the safe and unsafe place. Where the safe place is your private network and the unsafe place is the internet – a wide public network. This way a firewall not only eliminates unwanted network communication but also prevents your server from malicious attacks. 

There are two main types of firewalls, viz. ‘host firewall’ and ‘network firewall’. A host firewall is installed on individual servers and monitors the incoming and outgoing connections. A network firewall is usually built into your hosting infrastructure. 

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