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Prestige 100L IDSL Router
Filters 6-7
The protocol dependent filter rules abbreviation are listed as follows:
l If the filter type is IP, the following abbreviations listed in the following table are used.
Table 6-2 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
l If the filter type is GEN (generic), the abbreviations listed in the following table are used.
Table 6-3 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.
6.2.2 Configuring a Filter Rule
To configure a filter rule, type its number in Menu 21.1 - Filter Rules Summary and press the [Enter] key
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 warns you and you are not allowed to save.
6.2.3 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 rule, select TCP/IP Filter Rule from the Filter Type field and press the [Enter] key
to open Menu 21.1.1.1 – TCP/IP Filter Rule, as shown in the following figure.