ZyXEL Communications G-2000 Plus Benutzerhandbuch

ZyAIR G-2000 Plus User’s Guide

Chapter 29 Filter Configuration

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The protocol dependent filter rules abbreviation are listed as follows:

Table 107   Rule Abbreviations Used

IP

Pr

Protocol

SA

Source Address

SP

Source Port number

DA

Destination Address

DP

Destination Port number

GEN

Off

Offset

Len

Length

Refer to the next section for information on configuring the filter rules.

To configure a filter rule, type its number in Menu 21.1.1 - Filter Rules Summary and press 
[ENTER] to open menu 21.1.1.1 for the rule.

To speed up filtering, all rules in a filter set must be of the same class, i.e., protocol filters or 
generic filters. The class of a filter set is determined by the first rule that you create. When 
applying the filter sets to a port, separate menu fields are provided for protocol and device 
filter sets. If you include a protocol filter set in a device filter field or vice versa, the ZyAIR 
will warn you and will not allow you to save.

M

More.
“Y” means there are more rules to check which form a rule chain with the present rule. An 

action cannot be taken until the rule chain is complete.
“N” means there are no more rules to check. You can specify an action to be taken i.e., 

forward the packet, drop the packet or check the next rule. For the latter, the next rule is 

independent of the rule just checked.

m

Action Matched.
“F” means to forward the packet immediately and skip checking the remaining rules.
“D” means to drop the packet.
“N“ means to check the next rule.

n

Action Not Matched
“F” means to forward the packet immediately and skip checking the remaining rules.
“D” means to drop the packet.
“N” means to check the next rule.

Table 106   Abbreviations Used in the Filter Rules Summary Menu