Forbid PING this machine: echo 1> /proc/sys/net/ipv4/icmp_echo_ignore_all
Allow PING native: echo 0> /proc/sys/net/ipv4/icmp_echo_ignore_all
Centos forbid ping and allows ping
Forbid PING this machine: echo 1> /proc/sys/net/ipv4/icmp_echo_ignore_all
Allow PING native: echo 0> /proc/sys/net/ipv4/icmp_echo_ignore_all