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If you're looking to enable OpenSSH on CentOS 7, you've come to the right place. In this article, we'll take a look at the steps you need to follow to install and enable OpenSSH on your CentOS 7 machine. We'll also take a look at some of the benefits of using OpenSSH and how to configure it to suit your needs. What is OpenSSH? OpenSSH is a secure shell protocol used to establish a secure connection between two computers over a network. It's an open-source version of the Secure Shell (SSH) protocol, which is widely used to provide secure remote ... Read More
Varnish is an HTTP accelerator that improves the performance of web applications by caching frequently requested content in memory. It is a powerful tool that can speed up your website and reduce server load by serving cached content directly to users instead of processing requests every time they visit. In this article, we'll take a look at how to install Varnish and perform load testing using Apache Benchmark. Prerequisites Before we begin, make sure you have the following software installed on your server − Apache web server Varnish Apache Benchmark (ab) If you don't have these installed, you ... Read More
If you're looking for a reliable and robust firewall solution for your network, IPFire might be the answer. IPFire is a free and open-source Linux distribution that provides enterprise-level security features, including a stateful inspection firewall, intrusion detection and prevention, virtual private networking (VPN), and more. In this article, we will guide you through the steps to install IPFire on your network. Before we get started, let's make sure that your system meets the minimum requirements for IPFire − A 64-bit processor At least 512 MB of RAM At least 4 GB of storage If your system meets these ... Read More
As a Linux user, you know how important it is to monitor your system's logging activity. With the vast number of processes that run on your Linux system, it can be difficult to keep track of everything that's going on. Fortunately, there's a tool called "atop" that can help you monitor your system's logging activity. In this article, we'll guide you through the process of installing and using atop on your Linux system. What is Atop? Atop is a Linux performance monitoring tool that allows you to view real-time system and process-level performance statistics. It provides a comprehensive overview of ... Read More
Memcached is a distributed memory object caching system that can significantly improve the performance of your website or application by storing frequently accessed data in memory, reducing the number of database queries required. In this article, we will guide you through the process of installing and configuring Memcached on CentOS 8. Step 1: Install Memcached on CentOS 8 The first step is to install Memcached on your CentOS 8 system. You can do this by running the following command − sudo dnf install memcached This command will download and install Memcached on your system. Step 2: Start Memcached and ... Read More
Secure Shell (SSH) is a widely used protocol for accessing remote systems securely. It is used to establish a secure and encrypted connection between two computers over an insecure network. When establishing an SSH connection, there is a timeout value that determines how long the connection can be idle before it is closed. This is called the SSH connection timeout. The SSH connection timeout is essential to prevent unauthorized access and to reduce the risk of security breaches. However, it can be a hassle when you need to work on a remote system for an extended period. In this article, ... Read More
In today's digital world, file uploads are a common occurrence, be it uploading pictures to social media platforms or sharing documents through email. However, PHP's default file upload size limit can cause inconvenience to users, restricting them from uploading files of larger sizes. In this article, we will explore ways to increase the file upload size in PHP. Understanding PHP File Upload Size Limit PHP is a server-side scripting language that is widely used for developing dynamic web pages. When a user uploads a file to a PHP-based website, the file size limit is imposed by the PHP configuration settings ... Read More
In Linux, an inode is a data structure that stores information about a file or directory. Each inode contains details such as the file's ownership, permissions, size, and location on the disk. Inodes are crucial to the functioning of the file system as they allow the operating system to locate and access files quickly. However, in some cases, the number of inodes on a disk may be limited, leading to potential performance issues. In this article, we'll look at how to increase the disk inode number in Linux. Understanding Inodes To understand how to increase the disk inode number, it's ... Read More
Linux is an open-source operating system that is widely used by individuals, businesses, and governments around the world. However, like any other operating system, Linux is vulnerable to security threats, and it is important to take measures to improve the system's security. In this article, we will explore several ways to improve Linux system security. Update the System Regularly One of the simplest and most effective ways to improve the security of your Linux system is to update it regularly. Updates often contain security patches and bug fixes that address vulnerabilities in the system. Therefore, it is important to keep ... Read More
Linux is one of the most popular operating systems in the world, used by individuals, businesses, and governments alike. However, like any other operating system, Linux is vulnerable to security threats, particularly when it comes to network security. In this article, we will look at some ways to improve Linux network security. Keep Your System Updated The first and most important step in securing your Linux network is to keep your system updated. Linux vendors regularly release security patches and updates to address vulnerabilities in the operating system. By keeping your system updated, you can ensure that you have the ... Read More