SonicWALL TZ 190 Manuale Utente

Cache Size (KB) - Configure the size of the URL Cache in KB for the SonicWALL.

Tip! A larger URL Cache size can provide noticeable improvements in Internet browsing 
response times.

Once you configure your settings in the N2H2 Properties window, you can configure 
SonicWALL blocking features including Restrict Web Features, Trusted Domains, and 
Message to Display when Blocking from the Security Services > Content Filtering page.

Restrict Web Features enhances your network security by blocking potentially harmful Web 
applications from entering your network. Select any of the following applications to block: 

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 
check box to block ActiveX controls.

Java - Java is used to download and run small programs, called applets, on Web sites. It 

is safer than ActiveX since it has built-in security mechanisms. Select the Java check box 
to block Java applets from the network.

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 check box to disable Cookies.

Web Proxy - When a proxy server is located on the WAN, LAN users can circumvent 

content filtering by pointing their computer to the proxy server. Check this box to prevent 
LAN users from accessing proxy servers on the WAN. 

Known Fraudulent Certificates - Digital certificates help verify that Web content and files 

originated from an authorized party. Enabling this feature protects users on the LAN from 
downloading malicious programs warranted by these fraudulent certificates. If digital 
certificates are proven fraudulent, then the SonicWALL blocks the Web content and the 
files that use these fraudulent certificates. Known fraudulent certificates blocked by 
SonicWALL include two certificates issued on January 29 and 30, 2001 by VeriSign to an 
impostor masquerading as a Microsoft employee.

Trusted Domains can be added in the Restrict Web Features section. If you trust content on 
specific domains, you can select Don’t block Java/ActiveX/Cookies to Trusted Domains 
and then add the Trusted Domains to the SonicWALL by clicking on Add. The Add Trusted 
Domain Entry window appears for entering the trusted domain name.

Don’t Block Java/ActiveX/Cookies to Trusted Domains - Select this option if you have 
trusted domains using Java, ActiveX, and Cookies. To add a trusted domain, enter the domain 
name into the Add Trusted Domain field. Click OK to add the domain to the list of trusted 
domains. To delete a domain, select it from the list, and then click Delete.