micrOdOts.org / ramblings [of the ABsurd]

To make your host invisible on the network (pings won't get replied), edit the /etc/sysctl.conf file and set the following variable to 1:

net.ipv4.icmp_echo_ignore_all = 1


To apply the new settings, re-read the config by running as root:

/sbin/sysctl -p