Black Box LRA005A-R2 211, Sapfilter status, Filter Ripfilter, Spoof iface watchdog on off

ASYNC ROUTER AR-P, AR-5, AND SYNC ROUTER REFERENCE MANUAL

sapfilter status

Displays the list of SAP packet filters.

Example

Add a filter called “sap1” to allow only file server services (service type 4) received from eth0 to be routed. Create a second filter called “sap2” which denies all other inbound packets. Enter:

sapfilter add sap1 -s 4 -f inbound -i eth0 -t allow

sapfilter add sap2 -i eth0 -f inbound -t deny -o after sap1

See also

filter

ripfilter

3.15 spoof

Configure/display which packets to spoof

Syntax

spoof iface watchdog [{on off}]

Description

The spoof command configures which packets to spoof. Spoofing is the act of responding to periodic packets received on the Ethernet interface while a corresponding modem interface is disconnected. If the Router allowed the packets through, the modem interface would never disconnect. Spoofing is usually performed for packets that are periodically sent between the local and remote networks. The Router default is to enable spoofing for all modem interfaces. Any interface (line) configured for client operation will automatically have the spoof watchdog off for that interface.

Subcommands and parameters

Only “non-Ethernet” interfaces are allowed for iface.

iface—modem0-4, sync0

on—Specifies that spoofing is enabled for a given interface. Enabling watchdog spoofing allows remote users to not lose their NetWare server connection at the other end of the modem link, when the modem line disconnects. If the modem disconnects, the user can simply access the server volume again, the modem will redial, and the session will continue, after a 30- to 60-second delay to make the modem connection.

off—Specifies that spoofing is disabled for a given interface. If neither on nor off is specified, then the current state of spoofing is returned. If watchdog spoofing is disabled, then each time the modem disconnects (usually due to an idle modem line), the user’s connection will time out at the server. NetWare servers generally time out lost user connections after 10 minutes, although this time is configurable. After the timeout, the server closes the user’s files and logs the user out. If the user accesses the NetWare server again, the user’s machine will hang, an error message will be displayed, the application may abort, and the user will have to log back onto the server.

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