Editing Generic Filters; Figure 104 Security > Packet Filter > Edit (Generic Filter) - ZyXEL Communications P-660HN User Manual

Table 63 Security > Packet Filter > Edit (Protocol Filter) > Edit Rule (continued)
LABEL
More
Log
Action Match
Action Not Match
Back
Apply
Cancel

11.2.3 Editing Generic Filters

Use this screen to display a generic filter set on your ZyXEL Device. The purpose of generic
rules is to allow you to filter non-IP packets. For IP packets, it is generally easier to use the IP
rules directly.
For generic rules, the ZyXEL Device treats a packet as a byte stream as opposed to an IP or
IPX packet. You specify the portion of the packet to check with the 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 104 Security > Packet Filter > Edit (Generic Filter)
P-660HN-Fx User's Guide
DESCRIPTION
Select Yes to pass a matching packet to the next filter rule before an action is
taken. Select No to act upon the packet according to the action fields.
Select a logging option from the following:
None – No packets will be logged.
Match - Only packets that match the rule parameters will be logged.
Not Match - Only packets that do not match the rule parameters will be logged.
Both – All packets will be logged.
Select the action for a matching packet.
Options are Check Next Rule, Forward and Drop.
Select the action for a packet not matching the rule.
Options are Check Next Rule, Forward and Drop.
Click this to return to the previous screen without saving.
Click this to save your changes.
Click this to restore your previously saved settings.
Chapter 11 Packet Filter
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