Draytek Vigor2133 User Manual page 278

Fragments
Filter
266
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, it
indicates 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.
Pass Immediately - Packets matching the rule will be
passed immediately.
Block If No Further Match - A packet matching the rule,
and that does not match further rules, will be dropped.
Vigor2133 Series User's Guide