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Configure a firewall using UFW and Firewalld

Configure a Firewall using UFW (Ubuntu) and Firewalld (RHEL)

Learn how to configure a Linux firewall using UFW on Ubuntu and Firewalld on RHEL. Step-by-step CLI examples, best practices, and comparison tables included. Table of Contents 🔈Introduction Securing your...
Configure SSL for Splunk Enterprise on RHEL 9

How to Configure SSL for Splunk Enterprise on RHEL 9 | CentOS 9

Learn how to configure SSL for Splunk Enterprise on RHEL 9 or CentOS 9. This detailed guide covers certificate generation, secure web interface setup, and SSL forwarding configuration for maximum security....
Install MongoDB on RHEL 10 | CentOS 10

Install MongoDB on RHEL 10 | CentOS 10

Learn how to install MongoDB (Community or Enterprise) on RHEL 10 / CentOS 10 with step‑by‑step repository setup, CLI commands, SELinux tips, and troubleshooting.” Table of Contents 🔈Introduction MongoDB...
Apache error Invalid command Header

Fixing the Apache Error: Invalid Command 'Header'

Learn how to fix the Apache error “Invalid command ‘Header'” when configuring a web server. Step-by-step guide with CLI commands, configuration examples, and troubleshooting tips to get...