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disable icmp

How to disable ICMP echo responses in Linux

by lifeLinux on May 2, 2011

Many malicious attacks begin with a ping scan. Disabling ICMP echo requests prevents your system’s discovery with a ping. Disable ICMP echo responses temporarily You can temporarily disable the ICMP using the following method but this setting will be erased after the reboot. [email protected]:~# echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all