Operation Manual

Configuring ISDN Call Destinations 129
Spoofing and filtering can be performed on both, the network
protocol and the ISDN driver layer. On the network layer, filters
and spoofings are configured via Bind Options or via FILTCFG.
For more information, refer to the NetWare MultiProtocol Router
3.1 documentations.
For connecting networks via ISDN, however, spoofing and
filtering on the ISDN driver level is much more effective. The
NetWare MultiProtocol Router for ISDN 3.1 provides filter and
spoofing mechanisms for a large number of packets.
Spoofed and filtered packets can be made visible via a packet
trace. Packet Trace can be enabled in the ISDN Console or via the
MPR for ISDN Router Manager and Router Agent. Filtered
packets will be displayed as "Dropped-Send", spoofed packets as
either "Local-Send" or "Local-Receive".
18. Check the Watchdog Spoofing .
NetWare servers send out so called "Watchdog" packets at
regular intervals (default: every 5 minutes) to poll the status of
IPX clients; i.e. they check that clients that have logged into the
server are still "alive".
Watchdog packets can be spoofed on the network protocol level
by enabling the "On Demand Spoofing" parameter in the IPX
binding options, as well as on the ISDN driver level with the
parameter "Watchdog Spoofing".
Default: Enabled
Options: Enabled, Disabled
When Watchdog Spoofing is enabled, Watchdog packets are
confirmed by the NetWare MultiProtocol Router for ISDN on the
local site and will not be transmitted via ISDN to the remote site.
When this parameter is disabled, an ISDN connection will be set
up each time watchdog packets are to be transferred.
19. Check the SPX Spoofing .
Many applications use SPX besides IPX. When SPX is used, so-
called "SPX keep-alive packets" are exchanged frequently (aver-
age every 50 seconds) between the client and the application
server (host) to check whether the same application is still