Netopia R7200 manual NetBIOS, IPX spoofing, IPX setup screen

IPX Setup 11-3

The following is a list of common SAP server types:

Unknown	0000h
Print Queue	0003h
File Server	0004h
Job Server	0005h
Print Server	0007h
Archive Server	0009h
Remote Bridge Server	0024h
Advertising Print Server	0047h
Reserved Up To	8000h

NetBIOS

NetBIOS is a protocol that performs tasks related to the Transport and Session layers of the OSI model. It can operate over IPX using a special broadcast packet known as “IPX Packet type 20” to communicate with IPX NetBIOS servers.

IPX spoofing

The Netopia R7200 has several IPX features designed to restrict the traffic on the dial-up link when the unit is not sending or receiving IPX data. When the link is idle and a user is logged into a Novell server, the server will send keep-alive packets to ensure that the user is still there. If the link is idle, the keep-alive packets will be sent back to the server by the locally connected Netopia R7200 as though they came back from the user without bringing up the dial-up link.

SPX keep-alive packets are also treated in this manner. IPX RIP and SAP messages will not be sent if the link is down. Together, these features enable the user to remain connected to a Novell server or SPX peer without bringing up the dial-up link, except to send and receive actual user data.

IPX setup screen

Main

Menu

System

Configuration

Network

Protocols

Setup

IPX Setup

You will use the IPX Setup screen to configure the Ethernet side of the Netopia R7200. The information you enter controls how the router routes IPX traffic.

Before changing any of the settings in this screen, consult your network administrator for the IPX setup information you will need. Changes made in this screen will take effect only after the Netopia R7200 is reset.