ZyXEL Communications P-324 User's Guide download pdf (Page 428)

100

101

P-2602HWNLI User’s Guide

428 Appendix I Commands

Data filtering screens data to determine if the packet should be allowed to pass. Data filters are

divided into incoming and outgoing filters, depending on the direction of the packet relative to

a port. Data filtering can be applied on either the WAN side or the Ethernet side. Call filtering

is used to determine if a packet should be allowed to trigger a call.

Outgoing packets must undergo data filtering before they encounter call filtering. Call filters

are divided into two groups, the built-in call filters and user-defined call filters. Your ZyXEL

Device has built-in call filters that prevent administrative, for example, RIP packets from

triggering calls. These filters are always enabled and not accessible to you. Your ZyXEL

Device applies the built-in filters first and then the user-defined call filters, if applicable, as

shown next.

Figure 226 Outgoing Packet Filtering Process

Two sets of factory filter rules have been configured to prevent NetBIOS traffic from

triggering calls. A summary of their filter rules is shown in the figures that follow.

The following figure illustrates the logic flow when executing a filter rule.

Dat a

Filtering

Outgoi ng

Pac ket

Drop

pack et

Built-in

def aul t

Call Filters

User -def i ned

Call Filters

(if applicable)

Initiate call

i f l i ne not u

cti ve Dat

Send packet

and reset

Idle Timer

Or Or

Drop packe

i f l i ne not u

Drop packe

i f l i ne not u

Send packet

but do not reset

Idle Timer

Send packet

but do not reset

Idle Timer

Mat c h Mat c hMat c h

mat ch

mat c h

Call Filtering

1 2 ... 423 424 425 426 427 428 429 430 431 432 433 ... 441 442

Comments to this Manuals

No comments

ZyXEL Communications P-324 User's Guide Page 428

Comments to this Manuals

Related products and manuals for Routers ZyXEL Communications P-324