• Home
IMTIAZ RAHMAN
Tag: Ubuntu
 

Menu

Skip to content
  • Home

Tags

Ansible Automation Cisco Cloud Container DevOps Docker honeypot ipv6 Linux NetDevOps OpenStack Puppet Security SOAR SSH Thoughts Ubuntu vim virtualization

Categories

Powered by Verbosa & WordPress.

Tag: Ubuntu

Ansible playbook for spin up droplets in DigitalOcean

imtiaz February 26, 2020 Ansible / Automation / Cloud / DevOps / Linux / UbuntuLeave a comment

Ansible is an open source configuration management tool, and is popular for provision infrastructure. In this blog post I’ll show you how easily you can spin up multiple droplets in DigitalOcean. The full code can be downloaded from here. Prerequisite Ansible should be installed on your host and you should …

Continue reading

It all starts with an [SPAM] email

imtiaz October 17, 2019 Automation / cortex / Linux / Security / SOAR / thehive / UbuntuLeave a comment

SPAM (or more specifically phishing) email is the most popular and effective weapon of cyber attack now a day. What is the first thing people do after receiving a spam email? Some got caught in the spammer net, some ignore it, some deletes the email, but as a security enthusiast …

Continue reading

from Zero to Swarm, your one stop Docker shop

imtiaz October 2, 2019 Container / DevOps / Docker / Linux / Ubuntu / virtualizationLeave a comment

  Docker, the most popular container technology nowadays. By nature it’s an application container, means if you want apache you will get apache inside your container. Or if you want to run mysql inside your container its mysql only. Got the picture? Cool. In this post I ll show you …

Continue reading

Uncomplicated Firewall (ufw) for ubuntu system

imtiaz December 21, 2017 Linux / Security / UbuntuLeave a comment

The Uncomplicated Firewall (ufw) is a front end for iptables and is a host based firewall. In this tutorial we will see how to enable and configure ufw firewall on Ubuntu system. Ubuntu 8.04 LTS introduced ufw, and it is available by default in all Ubuntu installations after 8.04 LTS. One …

Continue reading

Gtop, a command line dashboard for system monitoring

imtiaz October 2, 2017 Linux / UbuntuLeave a comment

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 …

Continue reading

Linux firewall for ipv6 traffic

imtiaz August 9, 2017 ipv6 / Linux / Security / UbuntuLeave a comment

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 …

Continue reading

How to deploy MHN (Modern Honey Network) Server on EC-2 Instances

imtiaz April 7, 2017 Cloud / honeypot / Security / UbuntuLeave a comment

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 …

Continue reading

How to run your own lxd demo server

imtiaz March 9, 2017 Container / Linux / UbuntuLeave a comment

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 …

Continue reading

How to implement 2 factor authentication for SSH on Ubuntu 16.04

imtiaz December 22, 2016 Cloud / Linux / Security / UbuntuLeave a comment

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 …

Continue reading

How to detect and fix Dirty COW (CVE-2016-5195) issues on Ubuntu kernel

imtiaz October 26, 2016 Linux / Security / UbuntuLeave a comment

  A serious bug has been detected recently in Linux kernel named Dirty COW (CVE-2016-5195). An unprivileged local user can use this flaw to gain write access in the system. The bug existed since around 2.6.22+ (release in 2007) and was fixed on Oct 18, 2016. Exploitation of this bug does …

Continue reading

Posts navigation

1 2