3Com 3CRADSL72, Руководство пользователя

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Firewall 61
WAN Ping Blocking
Figure 46 WAN Ping Blocking Screen
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 and click Apply
Changes , and the router will not respond to an ICMP ping from the
Internet.
Security Log
Figure 47 Security Log Screen
This page shows any attempts that have been made to gain access to
your network as well as the system activities.