ZyXEL UAG715 User Guide - Page 354
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Chapter 28 Content Filtering Figure 232 Content Filter Lookup Procedure 3 2 1 4 1 A computer behind the UAG tries to access a web site. 2 The UAG looks up the web site in its cache. If an attempt to access the web site was made in the past, a record of that web site's category will be in the UAG's cache. The UAG blocks, blocks and logs or just logs the request based on your configuration. 3 Use the Content Filter Cache screen to configure how long a web site address remains in the cache as well as view those web site addresses (see Section 6.15 on page 91). All of the web site address records are also cleared from the local cache when the UAG restarts. 4 If the UAG has no record of the web site, it queries the external content filter database and simultaneously sends the request to the web server. 5 The external content filter server sends the category information back to the UAG, which then blocks and/or logs access to the web site based on the settings in the content filter profile. The web site's address and category are then stored in the UAG's content filter cache. 354 UAG715 User's Guide
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