Allied Telesis AT-WL2411 User Manual
Page 73
AT-WL2411 Installation and User’s Guide
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This parameter works with the Action parameter; for example, if
the action is set to And, then the next sequence in another
expression is processed.
Offset
Identifies a point inside a bracket where testing for the expression
is to start. The range is from 0 to 65535.
Mask
Applies a data pattern to the packet. If the data pattern in the
mask matches the packet, then the specific action is performed.
The mask indicates the bits that are significant at the specified
offset. A bit is significant if a bit in the mask is set to one. If this field
is empty, the length of the field is determined by the longest value
in the Filter Values menu for the specified value ID. The mask
values are entered in hexadecimal pairs. You can enter 0 to 8 pairs.
Op (Operation)
Performs a logical operation when a data pattern matches a value
in the Filter Values menu to determine if the specified action
should be taken. Valid operations include:
❑EQ (equal)
❑NE (not equal)
❑GT (greater than)
❑LT (less than or equal)
Value ID
Represents a value in the Filter Values menu. The bytes after the
packet offset are compared to the data pattern indicated by the
value. Value ID can be from 0 to 255 and must match one or more
value IDs in the Filter Values menu.
Action
Sets the action to Pass, Drop, or And. If you set the action to And,
the filter expression with the next highest sequence is applied.
4. Click Submit Changes to save your changes. To activate your changes,
click the Save/Discard Changes link in the menu bar and then click
Save Changes and Reboot. For help, see Saving Your Configuration
Changes on page 46.