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Month: September 2007

Turn off ICMP echo response

Posted By: azhar on September, 21 2007

To avoid malicious attacks from ping, you may disable ICMP echo response by adding the following lines to /etc/sysctl.conf file.

net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_echo_ignore_all = 1

Then run the following command:

# sysctl -p


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