ZyXEL Communications ZyXEL ExpWave 240B - Manual (Page 57)

ExpWave 240B Secure Outdoor Ethernet Radio Link
Filter Setup 9-3
[N] means there are no more rules to check.
m Refers to Action Matched. [F] means to forward the packet.
[D] means to drop the packet.
[N] means check the next rule.
n Refers to Action Not Matched [F] means to forward the packet.
[D] means to drop the packet.
[N] means check the next rule.
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.
Table 9-2 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 9-3Abbreviations Used If Filter Type Is GEN
Abbreviation Description
Off Offset
Len Length
Refer to the next section for information on configuring the filter rules.
9.3.1 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 ExpWave will warn you and will not allow you to save.
9.3.2 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.