User's Manual

URL Filter

URL (Uniform Resource Locator – e.g. an address in the form of http://www.example.com ) filter

rules allow you to prevent users on your network from accessing particular websites from their URL.

There are no pre-defined URL filter rules; you can add filter rules to meet your requirements.

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:

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, it is checked with the forbidden list. If present, the connection attempt is dropped.

3. If the packet matches neither of the above, it is sent to the remote web server.

4. Please be note that the completed URL, “www” + domain name shall be specified. For example