SMC Networks SMC2804WBR V.2 - Manual (Page 67)

Advanced Setup
65
Firewall
The Wireless Barricade™ firewall can provide access control of
connected client PCs, block common hacker attacks, including
IP Spoofing, Land Attack, Ping of Death, IP with zero length,
Smurf Attack, UDP port loopback, Snork Attack, TCP null scan,
and TCP SYN flooding. The firewall does not significantly affect
system performance, so we advise leaving it enabled to protect
your network users.
Access Control
Using this option allows you to specify different privileges based
on IP address for the client PCs.
Note: Click on Add PC and define the appropriate settings for
client PC services (as shown in the following screen).