Configuring the Firewall
Configuring Content Filtering
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Enabling Content Filtering
To enable content filtering:
STEP 1 Choose Firewall > Content Filtering. 
STEP  2 Check the Enable box.
STEP  3 Click Save.
Blocking Web Components
Certain commonly-used web components can be blocked for increased security. 
Some of these components can be used by malicious websites to infect 
computers that access them. 
STEP 1 Choose Firewall > Content Filtering.
STEP  2 With content filtering enabled, under Web Components, select the check box for 
each component you wish to block: 
• Block Proxy—A proxy server (or simply, proxy) allows computers to route 
connections to other computers through the proxy, thus circumventing 
certain firewall rules. For example, if connections to a specific IP address are 
blocked by a firewall rule, the requests can be routed through a proxy that is 
not blocked by the rule, rendering the restriction ineffective. Enabling this 
feature blocks proxy servers.
• Block Java—Blocks java applets from being downloaded from pages that 
contain them. Java applets are small programs embedded in web pages that 
enable dynamic functionality of the page. A malicious applet can be used to 
compromise or infect computers. Enabling this setting blocks Java applets 
from being downloaded.
• Block ActiveX—Similar to Java applets, ActiveX controls are installed on a 
Windows computer while running Internet Explorer. A malicious ActiveX 
control can be used to compromise or infect computers. Enabling this setting 
blocks ActiveX applets from being downloaded.