ZyXEL Communications Prestige 791R, Руководство пользователя

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Prestige 791R G.SHDSL Router
Filter Configuration 12-9
FIELD DESCRIPTION
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.
The protocol dependent filter rules abbreviation are listed as follows:
Table 12-2 Rule Abbreviations Used
FILTER TYPE DESCRIPTION
IP
Pr Protocol
SA Source Address
SP Source Port Number
DA Destination Address
DP Destination Port Number
GEN
Off Offset
Len Length
12.3 Filter Rule Configuration
To configure a filter rule, type its number in Menu 21.1 – Filter Rules Summary and press [ENTER] to
open menu 21.1.1 for the rule.
There are two types of filter rules: TCP/IP and Generic . Depending on the type of rule, the parameters for
each type will be different. Use [SPACE BAR] to select the type of rule that you want to create in the
Filter Type field and press [ENTER] to open the respective menu.
To speed up filtering, all rules in a filter set must be of the same class, for instance, 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 filters field or vice versa, the Prestige will warn you and will not allow you to
save.