seguridad: como evitar contestar el ping?

como evitar el riesgo ?

Protocol Type Status Additional Information
ICMP 8 OPEN An ICMP ping request is usually
used to test Internet
access. However, an attacker can use it to determine if your computer is
available and what OS you are running. This gives him valuable information
when he is determining what type of attack to use against you.


grracias anticipada a quien pueda responder
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