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How to Install and Configure CSF on AlmaLinux 9
BySamWay to the Web Ltd and Configserver.com has closed down permanently on 31 August 2025. ConfigServer Security & Firewall (CSF) is an iptables-based firewall that provides high-level security to the Linux system. CSF includes a wide range of features, such as IP blocking, port blocking, and DoS protection. It also supports advanced security measures, such as rate…
How To Install Linux, Nginx, MySQL, PHP (LEMP) stack On CentOS 7
BySamStep 1 — Installing Nginx In order to display web pages to our site visitors, we are going to employ Nginx, a high-performance web server. To get the latest Nginx version, we’ll first install the EPEL repository, which contains additional software for the CentOS 7 operating system. To add the CentOS 7 EPEL repository, run…
Replace old text with new text Linux Command
BySam[root@srv01 demo]# grep -rl ‘from test old’ . | xargs sed -i ‘s/from test old/from test new/g’
About WHOIS Lookup
BySamWhat is a WHOIS Database? The WHOIS database contains the listing of all registered domains on the internet. You can do a WHOIS lookup to access various details related to a domain like registration date, expiry date, domain ID, name of registrar, contact information, server name and more. The WHOIS database is available to the…
How To Create a Linux Swap File
BySamIn this article, we will explain swap space, and learn how to create swap space using a swap file in Linux: this is important in case we don’t have a swap partition created on the hard disk. Swap space/partition is space on a disk created for use by the operating system when memory has been…
How to Add Google reCAPTCHA to a PHP Form with Example?
BySamIn this guide, we will integrate the Google reCAPTCHA in the PHP contact form. Utilizing this Google reCAPTCHA code, we can validate the human users and protect the form of submission from bots. Integrating Google reCAPTCHA is recommended because It is an effective and efficient way of validating the user against bots. As we know…
