ZyXEL Communications P-1100 - Manual (Page 79)

Prestige 1100 Internet Access Router
Filter Configuration 8-7
Figure 8-4 Protocol and Device Filter Sets
To speed up filtering, all rules in a filter set must be of the same type, i.e., Protocol filters or Device 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.
8.4.2 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.