Dell SonicWALL GX250 Manual page 59

Configure the following settings in the Categories window:
Restrict Web Features
• ActiveX
ActiveX is a programming language that embeds scripts in Web pages. Malicious
programmers can use ActiveX to delete files or compromise security. Select the
ActiveX checkbox to block ActiveX controls.
• Java
Java is used to embed small programs, called applets, in Web pages. It is safer
than ActiveX since it has built-in security mechanisms. Select the Java checkbox
to prevent attacks and other threats created by Java applets.
• Cookies
Cookies are used by Web servers to track Web usage and remember user identity.
Cookies can also compromise users' privacy by tracking Web activities. Select the
Cookies checkbox to disable Cookies.
• Web Proxy
When a proxy server is located on the WAN, LAN users can circumvent content
filtering by pointing to this proxy server. The Disable Web Proxy checkbox
disables access to proxy servers located on the WAN. It does not block Web proxies
located on the LAN.
• Known Fradulent Certificates
Digital certificates help verify that Web content and files originated from an
authorized party. If digital certificates are proven fraudulent, then SonicWALL will
block Web content and files that use these fraudulent certificates. Enabling this
feature protect users on the LAN from downloading malicious programs warranted
by these fraudulent certificates.
Use Filter List (Web/News/FTP/Gopher)
• Log and Block Access
When selected, the SonicWALL blocks access to sites on the Content Filter, custom,
and keyword lists and log attempts to access these sites.
• Log Only
When selected, the SonicWALL logs and then allows access to all sites on the
Content Filter, custom, and keyword lists. The Log Only checkbox allows you to
monitor inappropriate usage without restricting access.
• Block all categories
The SonicWALL uses a Content Filter List generated by CyberPatrol to block
access to objectional Web sites. CyberPatrol classifies objectional Web sites based
upon input from a wide range of social, political, and civic organizations. Check the
SonicWALL Internet Security Appliance Guide Page 59