ZyXEL 2WG Guida Utente

 Chapter 13 Content Filtering Screens

ZyWALL 2WG User’s Guide

Click SECURITY > CONTENT FILTER > Cache to display the Cache screen.
Use this screen to view and configure your ZyWALL’s URL caching.  You can also configure 
how long a categorized web site address remains in the cache as well as view those web site 
addresses to which access has been allowed or blocked based on the responses from the 
external content filtering server. The ZyWALL only queries the external content filtering 
database for sites not found in the cache.
You can remove individual entries from the cache. When you do this, the ZyWALL queries the 
external content filtering database the next time someone tries to access that web site. This 
allows you to check whether a web site’s category has been changed.
Please see 

 for how to submit a web site that has been incorrectly 

categorized.

Add 

Click this button when you have finished adding the host name in the 

text field above. 

Delete 

Select a web site name from the Forbidden Web Site list, and then 

click this button to delete it from that list.

Keyword Blocking

Keyword Blocking allows you to block websites with URLs that 

contain certain keywords in the domain name or IP address. 
See 

how to set how much of the URL the ZyWALL checks.

Add Keyword

Enter a keyword (up to 31 printable ASCII characters) to block. You can 

also enter a numerical IP address.

Keyword List

This list displays the keywords already added. 

Add 

Click this button when you have finished adding the key words field 

above. 

Delete 

Select a keyword from the Keyword List, and then click this button to 

delete it from that list.

Apply

Click Apply to save your changes back to the ZyWALL.

Reset

Click Reset to begin configuring this screen afresh.

Table 82   SECURITY > CONTENT FILTER > Object (continued)