Those who are familiar with Linux system must know the top command. We can monitor our system usage by using top command like cpu, memory etc. There is another command which does the similar things like top, but instead of displaying the output in a raw text format, gtop produce …
Over the past decade virtualization technologies have gone from educational tools to full blown IT solutions. Virtualization has many benefits, among them application isolation and utilization of hardware resources are most valuable cause it gives more operational flexibility. Many organizations invest their money in virtualization technology. Virtual environment is easier …
iptables, The most common and widely used Linux firewall for IPv4 traffic. Like iptables, Linux has another firewall utility called ip6tables which is used for IPv6 traffic. These two tables need to configure separately for IPv4 and IPv6 packet. In this tutorial we will see how to configure ip6tables in Ubuntu …
The goal of the Information security is Confidentiality, Integrity and Availability are also known as CIA triad. The security people who are protecting, and the bad people who are breaking the security are actually trying to protect and break these three things. The best and easy example is a DDOS …
If you are a Linux user then you already know that in Linux everything is written in the file. A device in Linux is represented as a file, for configuring a service you have to edit lots of files like a mail server or a web server, even firewall information is …
Automation The world is moving first and whenever you think about fast moving, especially in the IT industry the word Automation came first in most of our minds but what is automation? And how it helps us to move first in the industry. IT automation is the linking of …
A honeypot is a computer software or device that exists only for attack. Yes, that’s the main goal of a honeypot. When you deploy a honeypot the main goal of the system is to be attacked. When a hacker interact with the honeypot, it starts logging the activity of the …
If you are familiar with LXD container then, you may already visited this lxd try it online link. Where you can create LXD container and do some basic operation on a demo server within a given time period (usually 30 minutes). After the time period you will be logout from the …
Deploying a cloud solution like OpenStack is hard. You have to install different services on different server, perform many different functions to orchestrate the cloud. It is a common question for those who wants to deploy OpenStack that how to start? How can I ensure that everything is in order or every component …
Hello everyone. Today I’ll show you how to implement 2 factor authentication for SSH on Ubuntu 16.04 server using the Google Authenticator app. We will use ssh key (1st factor) and a randomly generate code (2nd factor) by Google Authenticator to login to our Ubuntu server. I use Amazon EC2 …
