Atlantis A02-RA340, User Manual, Page: 54 / 85

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Block Mode: A list of the modes that you can choose to check the URL filter rules. The
default is set to Disabled.
•
Disabled: No action will be performed by the Block Mode.
•
Always On: Action is enabled. URL filter rules will be monitoring and checking at all
hours of the day.
•
TimeSlot1 ~ TimeSlot16: It is self-defined time period. You may specify the time
period to check the URL filter rules, i.e. during working hours. For setup and detail,
refer to
Time Schedule section.
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.
Domains Filtering : This function checks the domain name only, not the IP address, 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). For this function to be activated,
both check-boxes
must be checked . 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.abc.com will be sent to the remote web server
because it is listed in the trusted list, whilst the URL request for www.sex or ww.sex.com will
be dropped, because sex.com is in the forbidden list
.