Icmping
Author: a | 2025-04-24
For Ubuntu 18.04, you should have the following rules in your /etc/ufw/before.rules file: ok icmp codes for INPUT -A ufw-before-input -p icmp -icmp-type destination-unreachable -j ACCEPT -A ufw-before-input -p icmp -icmp-type source-quench -j ACCEPT -A ufw-before-input -p icmp -icmp-type time-exceeded -j ACCEPT -A ufw-before-input -p icmp -icmp-type parameter