4-1
v1.2, June 2008
Chapter 4Firewall Protection and Content Filtering
This chapter describes how to use the content filtering features of the ProSafe Dual WAN Gigabit
Firewall with SSL & IPsec VPN to protect your network.
This chapter contains the following sections:
•“About Firewall Protection and Content Filtering” on page4-1
•“Using Rules to Block or Allow Specific Kinds of Traffic” on page 4-2
•“Attack Checks” on page 4-18
•“Blocking Internet Sites (Content Filtering)” on page 4-20
•“Configuring Source MAC Filtering” on page 4-24
•“Configuring IP/MAC Address Binding Alerts” on page 4-26
•“Configuring Port Triggering” on page4-27
•“Setting a Schedule to Block or Allow Specific Traffic” on page4-29
•“Configuring a Bandwidth Profile” on page4-30
•“Configuring Session Limits” on page4-32
•“E-Mail Notifications of Event Logs and Alerts” on page 4-33
•“Administrator Tips” on page4-33

About Firewall Protection and Content Filtering

The ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN provides you with Web content
filtering options, plus browsing activity reporting and instant alerts via e-mail. Network
administrators can establish restricted access policies based on time-of-day, Web addresses and
Web address keywords. You can also block Internet access by applications and services, such as
chat or games.
A firewall is a special category of router that protects one network (the “trusted” network, such as
your LAN) from another (the untrusted network, such as the Internet), while allowing
communication between the two. You can further segment keyword blocking to certain known
groups (see “Managing Groups and Hosts (LAN Groups)” on page 3-5 to set up LAN Groups).