ZyXEL Communications ZyXEL ZyWALL 5 - Manual (Page 202)

ZyWALL 5 User’s Guide
Chapter 11 Content Filtering Screens 201
11.7 Content Filtering Cache
To view and configure your ZyWALL’s URL caching, click CONTENT FILTER, then the
Cache tab. The screen appears as shown. You can use this screen to 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 also 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.
Figure 81 Content Filter : Cache
The following table describes the labels in this screen.
Table 59 Content Filter : Cache
LABEL DESCRIPTION
URL Cache Setup
Maximum TTL Type the maximum time to live (TTL) (1 to 720 hours). This sets how long the
ZyWALL is to allow an entry to remain in the URL cache before discarding it.
Apply Click Apply to save your changes back to the ZyWALL.
Reset Click Reset to begin configuring this screen afresh.
URL Cache Entry