Disable ping $ echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all Install iptables and iptables-persistent $ sudo apt-get install iptables iptables-persistent $ sudo service iptables-persistent start Create shell script $ nano reset_iptables.sh #!/usr/bin/env bash iptables -F iptables -A INPUT -i lo -j ACCEPT iptables -A OUTPUT -o lo -j ACCEPT iptables -A INPUT -m conntrack –ctstate ESTABLISHED,RELATED…