Tcp/Ip Filter Rule; Figure 9-5 Protocol And Device Filter Sets - ZyXEL Communications PRESTIGE 1400 User Manual

Prestige 1400 WAN Router with Integrated Ethernet Switch
filters are applied to the raw packets that appear on the wire. They are applied at the point when the Prestige is
receiving and sending the packets; i.e. the interface. The interface can be an Ethernet port or any other hardware
port. The following diagram illustrates this.

Figure 9-5 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.
9.5.1

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 next.
9-6 Filter Configuration