Url Filtering - Motorola WS2000 System Reference Manual

3.9 URL Filtering

Use the

URL Filtering

the organization's access policies. URL Filtering works on the principles of maintaining a list of websites that
are permitted access to, a set of keywords that are allowed or denied search permissions, a list of blacklisted
websites, and a list of trusted IP addresses. This combination controls the HTTP access of any user behind
the WS2000 to any resources on the internet.
To use the URL Filtering feature, it must be enabled. By default, this feature is disabled enabling users
unrestricted access. To enable the URL Filtering feature,
Select [Network Configuration]
1. To enable the URL Filtering feature, select
2. If required, select
to restricted website when the user tries to use an IP address instead of the URL of the restricted
website. In this scenario, the WS2000 performs a reverse DNS lookup for the IP address. The reply is
received in the form of a URL and this URL is used to apply filtering rules. If the reverse DNS lookup does
not return an URL, then this feature enables you to control access.
3. The default port for TCP access is port 80. If your configured port for TCP is other than port 80, then use
the TCP Port field to configure it. URL Filter feature will filter any traffic through this port.
4. Use the Error Message
To configure the filters to be used for URL Filter, select
Parameters.
screen to filter out access through HTTP to websites and services that do not meet
--> URL Filtering
Enable URL Filter
Allow access on Reverse DNS reply
field to display the message a user will see when a URL is blocked.
LAN/Subnet Configuration
from the left navigation menu.
feature.
failure. This feature is used to control access
[Network Configuration]
3-19
--> URL Filtering --> URL