ZyXEL Communications P-793H User Manual

 Chapter 30 Filter Configuration

P-793H User’s Guide

LAN traffic filter sets may be useful to block certain packets, reduce traffic and prevent 
security breaches. Go to menu 3.1 (shown next) and enter the number(s) of the filter set(s) that 
you want to apply as appropriate. You can choose up to four filter sets (from twelve) by 
entering their numbers separated by commas, for example 3, 4, 6, 11. Input filter sets filter 
incoming traffic to the ZyXEL Device and output filter sets filter outgoing traffic from the 
ZyXEL Device.

Figure 198   Filtering LAN Traffic

Go to menu 11.5 (shown below – note that call filter sets are only present for PPPoA or PPPoE 
encapsulation) and enter the number(s) of the filter set(s) as appropriate. You can cascade up 
to four filter sets by entering their numbers separated by commas. The ZyXEL Device already 
has filters to prevent NetBIOS traffic from triggering calls, and block incoming telnet, FTP 
and HTTP connections.

Figure 199   Filtering Remote Node Traffic

                        Menu 3.1 - LAN Port Filter Setup

                    Input Filter Sets:
                      protocol filters=
                      device filters=
                    Output Filter Sets:
                      protocol filters=
                      device filters=

                         Menu 11.5 - Remote Node Filter

                    Input Filter Sets:
                      protocol filters=
                        device filters=
                    Output Filter Sets:
                      protocol filters=
                        device filters=
                    Call Filter Sets:
                      protocol filters=
                        device filters=