Monday, 30 September 2013

Command to enable/disable ICMP PING

Ping command is basically working on sending an Internet Control Message Protocol (ICMP) echo request packets to the target host and waiting for an ICMP response.

echo “0″ >> /proc/sys/net/ipv4/icmp_echo_ignore_all

Many server provider and host  disabled the PING command to secure the server, refer to the following command to disable the PING command.

echo “1″ >> /proc/sys/net/ipv4/icmp_echo_ignore_all

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