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 will be checked to see if any keywords are present in URLs accessed to determine if the connection attempt should be blocked.
Please note that the URL filter blocks web browser (HTTP) connection attempts using port 80 only.
For example, if the URL is http://www.helloworld.com.tw/abcde.html, it will be dropped as the keyword “abcde” occurs in the URL.
Domains Filtering:
This function checks the domain name in URLs accessed against your list of domains to block or allow. If it is matched, the URL request will be sent (Trusted) or dropped (Forbidden). The checking procedure is:
1.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.
2.If not, check if it is listed in the forbidden list, and if present then the connection attempt is dropped..
3.If the packet does not match either of the above two items, it is sent to the remote web server.
4.Please be note that the domain only should be 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.helloworld.com.tw will be sent to the remote web server because it is listed in the trusted list, whilst the URL request for www.sex or www.sex.com will be dropped, because helloworld.com is in
the forbidden list.
Restrict URL Features:
Block Java Applet: This function can block Web content which including the Java Applet. It is for preventing someone who wants to damage your system via standard HTTP protocol.
Block surfing by IP address: Preventing someone who uses the IP address as URL for skipping Domains Filtering function.
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