ZyXEL P-660HW-T1 v3 User Guide - Page 224

Table 64

Page 224 highlights

Chapter 12 Packet Filter Offset (from 0) and the Length fields, both in bytes. The ZyXEL Device applies the Mask (bit-wise ANDing) to the data portion before comparing the result against the Value to determine a match. The Mask and Value are specified in hexadecimal numbers. Note that it takes two hexadecimal digits to represent a byte, so if the length is 4 bytes, the value in either field will take 8 digits, for example, FFFFFFFF. In the Packet Filter screen, select Generic Filter from the Filter Type field. Then click the Edit button from the Modify field to display the following screen. Figure 93 Security > Packet Filter > Edit (Generic Filter) The following table describes the labels in this screen. Table 64 Security > Packet Filter > Edit (Generic Filter) LABEL DESCRIPTION # This is the index number of the rules in a filter set. Active Use the check box to turn on or off a filter rule. Filter Type This field displays whether the filter type is a protocol filter or generic filter. Offset This field displays the offset value. Length This field displays the length value. Mask This field displays the mask value. Value This field displays the value. Modify Click the Edit icon to configure a filter rule. Back Apply Cancel Click the Remove icon to delete a filter rule. Click this to return to the previous screen without saving. Click this to save your changes. Click this to restore your previously saved settings. 224 P-660HW-Tx v3 Series User's Guide

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Chapter 12 Packet Filter
P-660HW-Tx v3 Series User’s Guide
224
Offset
(from 0) and the
Length
fields, both in bytes. The ZyXEL Device applies
the Mask (bit-wise ANDing) to the data portion before comparing the result
against the Value to determine a match. The
Mask
and
Value
are specified in
hexadecimal numbers. Note that it takes two hexadecimal digits to represent a
byte, so if the length is 4 bytes, the value in either field will take 8 digits, for
example, FFFFFFFF.
In the
Packet Filter
screen, select
Generic Filter
from the
Filter Type
field.
Then click the
Edit
button from the
Modify
field to display the following screen.
Figure 93
Security > Packet Filter > Edit (Generic Filter)
The following table describes the labels in this screen.
Table 64
Security > Packet Filter > Edit (Generic Filter)
LABEL
DESCRIPTION
#
This is the index number of the rules in a filter set.
Active
Use the check box to turn on or off a filter rule.
Filter Type
This field displays whether the filter type is a protocol filter or
generic filter.
Offset
This field displays the offset value.
Length
This field displays the length value.
Mask
This field displays the mask value.
Value
This field displays the value.
Modify
Click the
Edit
icon to configure a filter rule.
Click the
Remove
icon to delete a filter rule.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.