Zyxel-communications P-335WT Manual do Utilizador descarregar pdf (Página 338)

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P-335 Series User’s Guide

338 Chapter 31 Filter Configuration

The protocol dependent filter rules abbreviation are listed as follows:

Table 120 Rule Abbreviations Used

ABBREVIATION DESCRIPTION

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.

31.2.1 Configuring a Filter Rule

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 Prestige

will warn you and will not allow you to save.

Filter Rules These parameters are displayed here.

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 119 Abbreviations Used in the Filter Rules Summary Menu

FIELD DESCRIPTION

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