Draytek Vigor2920 Series User Manual page 208

Item
Fragments
Filter
Vigor2920 Series User's Guide
Description
To set the service type manually, please choose User defined
as the Service Type and type them in this dialog. In addition, if
you want to use the service type from defined groups or
objects, please choose Group and Objects as the Service
Type.
Protocol - Specify the protocol(s) which this filter rule will
apply to.
Source/Destination Port –
(=) – when the first and last value are the same, it indicates one
port; when the first and last values are different, it indicates a
range for the port and available for this service type.
(!=) – when the first and last value are the same,
all the ports except the port defined here; when the first
and
last values are different, it indicates that all the ports
except the range defined here are available for this service
type.
(>) – the port number greater than this value is available.
(<) – the port number less than this value is available for this
profile.
Service Group/Object - Use the drop down list to choose the
one that you want.
Specify the action for fragmented packets. And it is used for
Data Filter only.
Don't care -No action will be taken towards fragmented
packets.
Unfragmented -Apply the rule to unfragmented packets.
Fragmented - Apply the rule to fragmented packets.
Too Short - Apply the rule only to packets that are too short to
contain a complete header.
Specifies the action to be taken when packets match the rule.
Block Immediately - Packets matching the rule will be
dropped immediately.
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it indicates