Ufw
Ufw (Uncomplicated Firewall) is a user-friendly command-line interface for managing iptables firewall rules on Linux systems. It simplifies the configuration of network traffic filtering by providing an intuitive syntax for setting up rules to allow or deny connections based on ports, protocols, and IP addresses. It is commonly used on Ubuntu and other Debian-based distributions as a default firewall management tool.
Developers should learn Ufw when working with Linux servers, especially in cloud or production environments, to secure applications by controlling inbound and outbound network traffic. It is particularly useful for quickly setting up basic firewall rules for web servers (e.g., allowing HTTP/HTTPS), SSH access, and blocking unwanted connections, making it ideal for DevOps tasks and system administration.