You can disable ping command in the server coz many users wants to disable PING to avoid detection or to keep away from Hackers. doing below steps
to disable the ping
admin@suresh$ echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all
to enable the ping
admin@suresh$ echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all
