ZyXEL Communications P-312 Manual Do Utilizador
P312 Broadband Security Gateway
Filters
7-7
The protocol dependent filter rules abbreviation are listed as follows:
! If the filter type is IP, the following abbreviations listed in the following table will be used.
! If the filter type is IP, the following abbreviations listed in the following table will be used.
Table 7-2
Abbreviations Used If Filter Type Is IP
Abbreviation
Description
Pr
Protocol
SA
Source Address
SP
Source Port number
DA
Destination Address
DP
Destination Port number
! If the filter type is GEN (generic), the following abbreviations listed in the following table will be
used.
Table 7-3
Abbreviations Used If Filter Type Is GEN
Abbreviation
Description
Off
Offset
Len
Length
Refer to the next section for information on configuring the filter rules.
7.2.2 Configuring a Filter Rule
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.
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.
Menu 21.1.1 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.
7.2.3 TCP/IP Filter Rule
This section shows you how to configure a TCP/IP filter rule. TCP/IP rules allow you to base the rule on
the fields in the IP and the upper layer protocol, e.g., UDP and TCP, headers.
To configure a TCP/IP rules, select TCP/IP Filter Rule from the Filter Type field and press Enter to open
Menu 21.1.1 - TCP/IP Filter Rule, as shown below.
the fields in the IP and the upper layer protocol, e.g., UDP and TCP, headers.
To configure a TCP/IP rules, select TCP/IP Filter Rule from the Filter Type field and press Enter to open
Menu 21.1.1 - TCP/IP Filter Rule, as shown below.