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How can I manage, for example, my Ubuntu mashine so it doesn't (or does) respond to PING(ICMP ECHO_REQUEST - type 8) requests?
Normally almost all computers in a LAN network responds to ping with an ICMP ECHO_REPLY, but how to turn it off?
How to Manage it? How to manage other types ICMP request?
/proc/sys/net/ipv4/icmp_echo_ignore_all set to a non zero number will not respond to IPv4 pings, IPv6 doesn't seem to have the same amount of options.
/proc/sys/net/ipv4/icmp_echo_ignore_all
Other options and values can be found here
For example iptables -A INPUT -p icmp --icmp-type echo-request -j DROP. Same with other types...
iptables -A INPUT -p icmp --icmp-type echo-request -j DROP
