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ZyXEL Communications 1600 Manual Do Utilizador

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Prestige 1600 Universal Access Concentrator
Filter Configuration 
10-5
Abbreviations
Description
Display
[F] means to forward the packet
immediately and skip checking the
remaining rules if any.
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
immediately and skip checking the
remaining rules if any.
[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 10-2 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 Dev (device), the following abbreviations  listed in the following table will be used.
Table 10-3 Abbreviations Used If Filter Type Is Dev
Abbreviation
Description
Off
Offset
Len
Length
Refer to the next section for information on configuring the filter rules.
10.4  Configuring a Filter Rule
To configure a filter rule, enter its number in Menu 21.1 - Filter Rules Summary and press [ENTER] to open
Menu 21.1.1 for the rule.
10.5  Filter Types and NAT
There are two classes of filter rules, Generic Filter (Device) rules and Protocol Filter (TCP/IP) rules. Generic
Filter rules act on the raw data from/to LAN and WAN. Protocol Filter rules act on the IP packets. Generic and
TCP/IP filter rules are discussed in more detail in the next section. When NAT  (Network Address Translation) is