Belkin F5D7230-4 Manuel De L'utilisateur page 71

Using the Web-Based Advanced User Interface
WAN Ping Blocking
Computer hackers use what is known as "pinging" to find potential
victims on the Internet. By pinging a specific IP address and receiving
a response from the IP address, a hacker can determine that something
of interest might be there. The Router can be set up so it will not
respond to an ICMP ping from the outside. This heightens the level of
security of your Router.
To turn off the ping response, select "Block ICMP Ping"
"Apply Changes". The Router will not respond to an ICMP ping.
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