Cheat Sheets

Network - Ignore ICMP

Description

Ensures that ICMP requests are ignored

Solution

echo 'net.ipv4.icmp_echo_ignore_all=1' >/etc/sysctl.d/50-net.ipv4.icmp_echo_ignore_all.conf && sysctl -p

Check Script: network-ignore-icmp-requests.sh

#!/bin/bash

if [[ $(/sbin/sysctl -n net.ipv4.icmp_echo_ignore_all 2>/dev/null) == 1 ]]; then result_failed "net.ipv4.icmp_echo_ignore_all is not 1" fi
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