SMC Networks S M C 7 0 0 4 A B R User Manual

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Advanced Setup
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For a full list of ports and the services that run on them, see 
www.iana.org/assignments/port-numbers.
Firewall
The Barricade Plus 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.