5-19
Advanced Setup
Fragments:
Specify a fragmented packets action.
Don't Care: Specify no fragment options in the filter
rule.
Unfragmented: Apply the rule to unfragmented pack-
ets.
Fragmented: Apply the rule to fragmented packets.
Too Short: Apply the rule only to packets that are too
short to contain a complete header.
5.5.5 Restricting Unauthorized Internet Services
This section will show a simple example to restrict access of WWW
from certain locations. In this example, we assume the IP address
of the access-restricted user is 192.168.1.10. The filter rule is
created in the Data Filter set and is shown as below.
Port 80 is the HTTP protocol port number for WWW services.