Url Filtering - Billion BiPAC 8500/8520 User Manual

URL Filtering

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 by their URL. There are no pre-defined URL filter rules; you can add filter
rules to meet your requirements.
• Enable/Disable: To enable or disable URL Filter feature.
• Block Mode: A list of modes that you can choose from to check the URL filter rules.
o  D isabled: No action will be performed by the Block Mode.
o Always On: Action is enabled. URL filter rules will be monitoring and checking at
all hours of the day.
o 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: Allow 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.abc.com/abcde.html, it will be dropped if the keyword
"abcde" occurs in the URL.
• Domains Filtering: This function checks the whole URL accessed and not just the IP
address in URLs against your list of domains to block or to 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. Below is the checking procedure:
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. If yes, then the connection attempt will be
Chapter 4: Configuration
Billion BiPAC 8500/8501/8520/8521 SHDSL (VPN) Firewall Bridge/ Router
http://www.abcde.com or
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