Jenkins Tutorial: Install Jenkins on Ubuntu
In this tutorial we are going to install Jenkins on Ubuntu operating system. Ubuntu is another debian based operating system – open sourced and highly loved by developer community. Step…
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Linux Performance Monitoring Guide
CPU Memory Network Storage Device and Input I/O Storage Capacity Storage Controller CPU Memory and I/O Interconnect
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Linux Tutorials: mpstat commands examples
mpstat – Report processors related statistics. The mpstat command writes to standard output activities for each available processor, processor 0 being the first one. Global average activities among all processors…
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Linux Tutorials: vmstat commands examples
The vmstat command (short for virtual memory statistics) is a built-in monitoring utility in Linux. Users can observe system activity virtually in real-time by specifying a sampling period. The command…
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Java Installation Guide in Linux & Windows
DOWNLOAD JAVA PACKAGE FROM – https://jdk.java.net/archive/ Download and Install JDK/JRE 7 in Centos & RHEL Download and Install JDK/JRE 8 in Centos & RHEL Download and Install JDK/JRE 9 in…
Read more »Linux Tutorials: Commands for Linux User
File Commands List files in the directory: List all files: Show directory you are currently working in: Create a new directory: Remove a file: Remove a directory recursively: Recursively remove a directory without requiring…
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What is SELinux and how its SELinux used in Docker?
What is SELinux and how its SELinux used in Docker? SELinux, or Security-Enhanced Linux, is a part of the Linux security kernel that acts as a protective agent on servers. In the…
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5 ways to split your Linux terminal multiplexer
List of Most Popular Free Linux Terminal Tmux GNU Screen Konsole Emacs Tilix Terminator MobaXStrem mRemoteNG Shells, terminals, and consoles The short version: A shell is an input and output…
Read more »[SOLVED] Laravel : Supervisor FATAL/BACKOFF Exited too quickly (process log may have details)
Problem I’m trying to use Laravel queues with a supervisor but the service is not working properly. When I try to check status:$ sudo supervisorctl status$ laravel-worker:laravel-worker_00: BACKOFF Exited too…
Read more »Modules in Apache Web Server
Core Modules New functions are in the form of modules. Every module has their own directives Easy to download,install and configure Define modules, use their syntaxes to use that functions…
Read more »Directory Structure of Apache Web Server
Apache HTTPD – Directory Structure CORE/common Directories conf modules htdocs logs New structure in Yum/RPM base installation conf conf.d conf.modules.d modules htdocs logs Structure in Tarball/source code base installation conf…
Read more »Installation Of Apache HTTP Web Server
How many ways you can install Apache? Installation Types1.Yum Based2.RPM Based3.Source code/ Tar ball Based Apache install on Centos 7 (Yum Base) 1.Check OS version # cat /etc/*release 2.Install apache…
Read more »What is LAMP Stack?
What is Stack? The term stack(derived from “solution stack”) refers to a collection of different software programs that “stack” together to create a plateform necesary to support application software. These…
Read more »Best practices to secure your Apache Web Server
Server Version Banner should be removed. I’d say this is one of the first things to think about, because you don’t want to reveal your web server version. By exposing…
Read more »Best Practices of Linux Security
User Security Password Security Securing the root account File System Security System Security User Security Avoid shared accounts Ensure each user is assigned a unique account name and a unique…
Read more »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 More than just…
Read more »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 Allows sysadmin to…
Read more »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 ports have ‘p’…
Read more »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 Enables access logging…
Read more »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 Firewalls act as…
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