Belkin N1 Wireless Modem Router F5D8631-4 - Manual (Page 58)

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Using the Web-Based Advanced User Interface
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Blocking an ICMP Ping
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 Modem Router can be set up so it will
not respond to an ICMP ping from the outside. This heightens your
Modem Router’s security level.
To turn off the ping response, select “Block ICMP Ping” (1) and click
“Apply Changes”. The Modem Router will not respond to an ICMP ping.
Utilities
The “Utilities” screen lets you manage different parameters of the
Modem Router and perform certain administrative functions.
(1)