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In Linux, prohibit icmp response-Linux Enterprise Application-Linux server application information. The following is a detailed description. To Disable icmp response in Linux, You can edit the/proc/sys/net/ipv4/icmp_echo_ignore_all file value. If it is 0, ping the file. If it is 1, no response is returned.
Run: echo 1> icmp_echo_ignore_all
Run echo 0> icmp_echo_ignore_all if ping is enabled.
The restart will fail, so it will run automatically after startup. Run:
Echo "echo 1>/proc/sys/net/ipv4/icmp_echo_ignore_all">/etc/rc. d/rc. local
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