Objective The objective is to configure the default UFW firewall on Ubuntu 18.04 to deny any incoming ICMP ping requests. Operating System and Software Versions Requirements Privileged access to to your Ubuntu 18.04 Bionic Beaver installation will be required. Conventions Instructions Update UFW rules In order to deny any incoming ICMP ping requests we need to modify /etc/ufw/before.rules UFW’s configuration file. First, ...