Disable icmp / ping respond on linux

18 sec read

|| what is ping
please take a look this

|| how to disable icmp / ping respond

# echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all

if you want to save permanently

# vi /etc/sysctl.conf
; add this line:
net.ipv4.conf.icmp_echo_ignore_all = 1

|| how to enable icmp / ping respond on linux

# echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all

or

# vi /etc/sysctl.conf
; edit / remove this line like:
net.ipv4.conf.icmp_echo_ignore_all = 0

|| links
| google
| cyberciti

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