March 2017Monthly Archives

Introduction Red Hat Enterprise Linux (RHEL) 6 and RHEL 7 have several differences in system administration commands and configuration files. One of the major changes introduced in RHEL 7 was the adoption of systemd as the system and service manager, replacing the traditional SysV init system used in RHEL 6.… Continue Reading Redhat 6 vs Redhat 7 distribution Commands

Introduction By default, Apache reveals details like its version number and operating system in HTTP response headers and error pages. This might seem harmless, but it actually gives attackers a head start knowing your exact Apache version and OS makes it far easier to find and exploit known vulnerabilities. That’s… Continue Reading How to Hide Web Server Information on Apache

Introduction By default, Nginx may expose web server and operating system information through HTTP response headers. For example, a server may return a header such as Server: nginx/1.10.0 (Ubuntu). Exposing this information can help attackers identify the web server version and operating system, which may make it easier to target… Continue Reading Hide Web Server Information and Modify Server Header on Nginx.

Introduction Docker has become one of the most widely used tools in modern DevOps workflows, and for good reason. It lets developers package an application together with everything it needs code, runtime, libraries, and system tools into a single lightweight unit called a container. That container runs the same way… Continue Reading Docker for Beginners: A Complete Guide to Installation and Essential Commands

Introduction Normally, we may need multiple domain names or subdomains to point to the same website and document root. In Apache, we can use ServerAlias for this purpose. In Nginx, we can achieve the same functionality by adding multiple domain names to the server_name directive. In this article, we will… Continue Reading How to Configure Server Alias on Nginx Web Server

Introduction There are situations where you may not be able to access the WordPress admin dashboard due to forgotten credentials, plugin conflicts, a broken dashboard, or other issues. In such cases, you can change the active WordPress theme directly from the backend by updating the theme settings in the WordPress… Continue Reading How to change wordpress themes from backend?

Introduction Changing the WordPress Site URL is a common task when migrating a website to a new domain, moving from HTTP to HTTPS, restoring a backup, or deploying a site to a new server. While WordPress provides options to update the site address from the admin dashboard, there are situations… Continue Reading Change wordpress site URL on backend(Mysql, Mariadb)

Amazon Elastic File System (EFS) is an AWS file storage service that allows the same file system to be mounted across multiple servers. It provides shared storage without requiring administrators to manage storage separately on each instance. Introduction EFS can be used in scenarios where multiple servers need access to… Continue Reading Working with EFS (Elastic File System)

Introduction Ajenti is an open-source web-based control panel that can be used to manage Linux servers through a web interface. It provides a simple dashboard for managing server services and configurations. In this article, we will explain how to install Ajenti Control Panel on an Ubuntu server and access it… Continue Reading How to Install Ajenti Control Panel on Ubuntu

Introduction Redirecting non-www requests to www is a common web server configuration used to maintain a consistent website URL. Nginx can handle this redirection using a simple server block configuration. This helps ensure that visitors accessing the website without www are automatically redirected to the www version. A permanent 301… Continue Reading How to Configure Nginx to Redirect Non-WWW to WWW