Linux Security Tools
Vulnerability Assessment with Nessus Traffic Security with Ethereal Web Proxying with Squid Vulnerability Assessment with Nessus Nessus is a vulnerability assessment tool Comes built-in with most distros…
How to Detecting and Stopping Attacks in Linux
System Auditing System Logging Network Intrusion Detection with Snort Host File Integrity with Tripwire System Auditing Auditing can track system activities to warn sysadmin of suspicious activity…
Complete Referance of Secure Networking in Linux
OpenSSH Samba NIS NFS Securing FTP and HTTP servers OpenSSH Open source version of SSH that normally comes with OpenBSD Comes with several distros or downloadable Linux…
Complete Referance of Linux Security Mechanisms
TCP Wrappers etc/hosts allow and deny inted and xinetd PAMs SELinux Unsecure Linux Utilities TCP Wrappers TCP Wrappers is built into most distros Adds IP filtering capability…
Complete Referance of Firewalls in Linux Security
Introduction to Firewalls IP Tables Dedicated Linux Firewalls Introduction to Firewalls Firewalls protect network perimeters Not total security solution, but important part of defense in depth strategy…
Complete Referance of Hardening in Linux Security
System Hardening Overview Batille Securing X-Windows Securing Linux Daemons Security patches Security Benchmarks System Hardening Overview Linux, like other operatingsystems, is not secure “out of the box”…
Complete Referance of Encryption in Linux Security
Introduction to Encryption Using GNU GPG Using SSH Hashing Utilities Using PKI Certificates in Linux Introduction to Ecryption Linux has built-in ability to encrypt files Protects files…
Complete Referance of Linux Security
Course Outline Introduction To Linux Security A Bit About Linux Current Security Problems which is more secure: Windows vs Linux? Requirements of a Secure OS Overview of…
Ubuntu 20.04.2 LTS display “34 updates can be installed immediately.”
Try Below Commands to update packages A reboot may or may not be necessary (sudo shutdown -r 0) For my machine i use only below command Note…
Ubuntu 20.04.2 LTS displays “There is 1 zombie process” upon login
To Check the zombie process run below command and Then kill the parent process 👉 For more details read below tutorial on this topic: Click Here Chandan…
XAMPP: Another web server is already running
Step 1: Stop the Apache Step 2: and Then Restart Apache 👉 if above command will not work in your machine then do below steps: Step 1…
NPM Error: Node Sass does not yet support your current environment
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ERROR: sh: 1: cross-env: Permission denied
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gyp ERR! stack Error: EACCES: permission denied
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How to install Git on Ubuntu/Linux.
To install Git on Linux/Ubuntu you have to Run the below commands Step 1 :- First check that your packages are updated or not : sudo apt…
HOW TO: INSTALL COMPOSER ON LINUX MINT
About Composer A composer is a tool for dependency management in PHP. It allows you to declare the libraries your project depends on and it will manage…
How to stop warnings when opening a file that has a .swp file Linux?
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Linux Tutorials: What is Swap in Linux and Useful Commands
What is Swap in Linux?Swap is a space on a disk that is used when the amount of physical RAM memory is full. When a Linux system…
Linux command Error- nohup:ignoring input and appending output to ‘nohup.out’
Error : When i am running below command to run start-seodaily-queue.sh file in background showing above error so let’s see how we can solve this error very…
Ubuntu or Linux Error: Unable to access XAMPP MySQL from /opt/lampp/bin/mysql
Here’s the complete article on the solution with baby steps:How to link php from XAMPP installation to use php command from user or any other directory in…
How to link MySQL from XAMPP (/opt/lampp/bin) to use mysql command from any directory in Ubuntu or Linux
Assumption: I assume that you have already installed XAMPP in your Ubuntu OR Linux machine.If not, then you may follow this link to do so: https://www.devopsschool.com/blog/installing-xampp-7-4-xxx-on-ubuntu/ and https://www.devopsschool.com/blog/how-to-link-php-from-xampp-installation-to-use-php-command-from-user-or-any-other-directory-in-ubuntu-or-linux/…
Ubuntu or Linux error: Error: EACCES: permission denied, mkdir ‘/opt/lampp/htdocs/node_modules/node-sass/vendor’
How I got this error:I got this error while running command: npm install in one of my project directory located at /opt/lamoo/htdocs What was the Error: root@ip-ip-address:/opt/lampp/htdocs/[projectName]#…
How to install latest version of nodejs in Ubuntu or Linux
Steps:1. Login to Ubuntu or Linux machine using ssh client like putty 2. Run command: sudo -s3. Run command: sudo apt-get install curl4. Run command: curl -sL…
Linux Tutorials: How to setup SSH keys on Ubuntu/ Linux
Introduction:If you want to clone a repository from gitlab, github or bitbucket in your Ubuntu machine then you may need to setup SSH Keys in ubuntu and…
How to install composer in Ubuntu or Linux machine
To install Composer on your Ubuntu or Linux system, perform the following steps: 1. Check if you have PHP installed and configured properly. If not then please…
How to link php from XAMPP installation to use php command from user or any other directory in Ubuntu or Linux
Assumption:I assume that you have already installed XAMPP in your Ubuntu OR Linux machine.If not, then you may follow this link to do so: https://www.devopsschool.com/blog/installing-xampp-7-4-xxx-on-ubuntu/ How I…
npm error on Linux: Node Sass could not find a binding for your current environment: Linux 64-bit with Node.js 12.x
Environment:Linux 64-bitLaravel 5.5Node.js 12.x How I got this error:I made some changes in one of the js file of my project. Hence, I needed to rebuild the…
Complete Reference: WordPress Debugging & Troubleshooting Guide
Any wordpress issues and problem may be caused by a variety of issues, including: Part – 1- Enable debugging mode in WordPress, follow the steps: Edit wp-config.php…
Ubuntu, Linux, Unix vi error: swap file .swp already exists
Command that gave me error:vi .env or vi <any file name that starts with a “.” that means it’s a hidden file> Error: Swap file .env.swp already…