TRENDnet TW100-S4W1CA User Manual page 18

2-5 Firewall
The Broadband Router provides extensive firewall protection by
restricting connection parameters to limit the risk of hacker attacks and by
defending against a wide array of common hacker attacks.
The Broadband Router provides packet filtering rules by restricting
service ports, IP address or MAC address. However, for applications that
require unrestricted access to the Internet, you may configure a specific
client/server as a demilitarized zone (DMZ).
2-5-1 Discard PING from WAN side
When "Discard Ping from WAN side" is checked, it is causes the public
WAN IP address on the Broadband Router to ignore ping commands.
Pinging public WAN IP addresses is a common method used by hackers
to test whether the WAN IP address is valid.
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2-5-2 Client Filtering
To block certain client PCs from accessing the Internet:
You can filter Internet access for local clients based on IP addresses,
application types, (i.e., HTTP port), and time of day.
For example, this screen shows that clients in the address range
192.168.0.50-99 are permanently restricted from using FTP (Port 21),
while clients in the address range 192.168.0.110-119 are blocked from
browsing the Internet (port 80) from Monday to Friday and from 0:00AM
to 11:00 PM.
Example:
2-5-3 MAC Address Control
MAC Address Control allows you to block certain client PCs from
accessing the Internet based on MAC addresses.
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