LevelOne FBR-1461 User Manual page 51

Keywords Filtering: Allows blocking by specific keywords within a particular URL rather
than having to specify a complete URL (e.g. to block any image called ―advertisement.gif‖).
When enabled, your specified keywords list is checked to see if any keywords are present in
URLs accessed to determine if the connection attempt should be blocked. Note that the URL
filter blocks web browser (HTTP) connection attempts using port 80 only.
For example, the URL http://www.abc.com/abcde.html would be dropped since the keyword
―abcde‖ occurs in the URL.
Domains Filtering: Checks the domain name in URLs accessed against your list of
domains to block or allow. If it matches, the URL request is sent (Trusted) or dropped
(Forbidden). The checking procedure is:
Check the domain in the URL to determine if it is in the trusted list. If yes, the connection
attempt is sent to the remote web server.
If not, it is checked with the forbidden list. If present, the connection attempt is dropped.
If the packet matches neither of the above, it is sent to the remote web server.
Please note that only the domain is specified, not the full URL. For example to block traffic to
www.sex.com, enter ―sex‖ or ―sex.com‖ instead of ―www.sex.com‖. In the example below,
the URL request for www.abc.com is sent to the remote web server because it is listed in the
trusted list, while the URL request for www.sex or www.sex.com is dropped because
sex.com is in the forbidden list.
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