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3 ipx spoofing – ZyXEL Communications 128MH User Manual

Page 111

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Prestige 128MH PSTN Router/Hub

7-3

Chapter 7 Novell IPX Configuration for LAN-to-LAN

7.2.1 Prestige on LAN with Server

When your Prestige is being connected to a LAN with an existing NetWare server station, you
will not need to configure your Prestige as a seed router, and hence the network number
parameter in the Ethernet Setup Menu for your Prestige. Your Prestige will learn the network

number of the network it is attached to through the regular RIP broadcasts sent by the server and
add this route to its routing table.

7.2.2 Prestige on LAN without Server

If your Prestige is connected to a LAN without an existing NetWare server station, then it needs
to create a unique external network number to apply to that frame on the LAN. Your Prestige
must then be configured as a Seed Router, and the network number can be configured in the
Ethernet Setup Menu. The network number must be unique and not used anywhere else on the

entire internetwork.

7.3 IPX Spoofing

Your Prestige comes with several pre-defined call filters designed to prevent certain IPX packets
from triggering a call to a Remote Node. These filters should inform your Prestige which packets
should be ignored as traffic.

When you are routing IPX packets, the default call filters are defined as follows:

l Block periodical SAP and RIP response messages.

l Block NetWare serialization packets.

l Allow SAP and RIP inquiry packets.

These call filters prevent your Prestige from making a call to the Remote Node, thus preventing
the expense of an unnecessary phone call.