As per Hardening guide for the server.
ICMP Broadcast Response: The kernel parameter icmp_echo_ignore_broadcasts must match to 1
However when i check the value of icmp_echo_ignore_broadcasts it thrown an error as unkonwn key.
# sysctl icmp_echo_ignore_broadcasts
error: "icmp_echo_ignore_broadcasts" is an unknown key
I would like to know what is recommended at this point.
Shall i add it? Is there any way of adding the key?
Just ignore it as this key doesn't exists in my distribution.