Jeff Wilson 
You’ve very possibly heard in online tutorials or your IT friend mentioning “loopback address” when they’re solving network problems or showing you how to set up a website. But what exactly is it, and why should you care? Let’s break it down in plain, non-technical English.
You know how frustrating it can be if you’ve ever encountered the ERR_NAME_NOT_RESOLVED error while browsing. This error typically means that your browser cannot resolve the domain name into an IP address, preventing you from accessing a website. Computers have IP addresses assigned to communicate with other computers on the network. As IP addresses can be challenging to memorize, we often turn to easy-to-remember domain names to reach specific computers on a network. The Domain Name System (DNS) acts as a digital phone book with names correlating to domain names and phone numbers translating to IP addresses. A DNS shows which domain points to which IP address to reach that particular server.
A .htpasswd file typically creates and updates stored usernames and passwords for HTTP users using HTTP authentication. You must create a .htpasswd file to secure the website’s content, whether the primary URL or some subdirectory. Only authorized users will be able to access the website’s source. The username and password in the file are inline, separated by a colon. The username is stored in plain text, and the password is hashed, usually with MD5 encryption.
The .htpasswd is in the .htaccess file in the website’s document root. The .htaccess file is a configuration file used by Apache-based web servers. Many possibilities exist with the .htaccess file, and one of them is including the .htpasswd file.
In this post, we will use already installed WordPress with the LAMP stack on Ubuntu 24.04 OS to configure HTTP authentication with the .htpasswd file. Creating and configuring it is straightforward and may take around 5 minutes. Let’s get started!
What is virtualization, and how does it benefit your server? In computing, virtualization divides physical computer resources into individual virtual machines called virtual private servers (VPS). Server virtualization masks server resources from server users into individual virtual private servers with their own operating system. Servers get isolated from the OS of the other servers hosted on the master physical machine known as the host. So, what is virtualization? In simple terms, virtualization is a process that partitions one big server into multiple smaller servers.
In this tutorial, we will explain everything about the most known Redis error in WordPress, known as Error establishing a Redis connection error, and the possible solutions to fix it. This issue may be caused by improperly installed and configured Redis service, misconfiguration in the wp-config.php file, network issues, plugin conflicts in WordPress, etc. In the next paragraphs, we will first explain Redis and how to fix the problems so your website is accessible again. We will use Ubuntu 24.04 OS and assume you already have a working WordPress installation. Let’s get started!
MongoDB is a NoSQL database that stores data in a flexible, document-oriented format. This makes it different from traditional relational databases like MySQL or PostgreSQL. It is a powerful, scalable, and flexible database commonly used for applications that need to manage large volumes of diverse data. This article will show you how to install MongoDB on Ubuntu 24.04, manage its services, and allow remote connections on an Ubuntu VPS.
In this tutorial, we are going to explain what the ERR_CONNECTION_RESET error is and how to fix it. This issue occurs when the connection between the browser and the website (server) unexpectedly closes. The terminated connection is due to the server terminating the session before completing the data transfer. In other words, the browser sent a request to the server, and the server retrieved the website but terminated the session before the data was transmitted completely. Since the data is incomplete, the browser receives data that is not usable and displays the error.
In the following paragraphs, we will explain what exactly causes this error in the Chrome browser and what steps may be applied to fix it. Let’s get started!
SPF or Sender Policy Framework is a DNS record that indicates mail exchanges in which hosts are authorized to send mail for a domain. An SPF record is a type of TXT(text), and its purpose includes essential notices regarding the domain. They are used because the SMTP protocol does not authenticate the “from” address in an email. Without it, attackers may easily impersonate the sender’s email address. This works so that the attackers or spammers can edit the From address to make it look like they are sending from an email address to your domain. This action is also known as email spoofing, which uses the user’s private information and can decrease the reputation of the IP address where the domain is pointed, which may lead to blocking. That is why using the SPF record is crucial when configuring the domain.
The SPF record can be managed via the domain’s DNS zone. This information is mostly handled by system administrators who have access to the user’s domain’s DNS zone. The SPF record has its format, mechanisms, and modifiers, which will be explained in more detail in the next paragraphs.