User manual

Packet Filters 8-2

You can compare the source or destination IPX socket number

contained in the packet to the socket number defined in the filter

rules. You must specify the type of the comparison.

For example, the following rule example accepts IPX packets

with the IPX source socket number 0x001:

IPX:

010 ACCEPT src-socket = 0x001;

IPX RIP Packet Filtering

Routing Information Protocol (RIP) packets are used to identify

all attached networks as well as the number of router hops

required to reach them. The responses are used to update a

router's routing table.

You define IPX RIP packet filtering rules in the IPX-RIP protocol

section of the filter file. You can filter IPX RIP packets by

network only.

The following rule example filters the route specified by the IPX

network address 00-03-55-BF:

IPX-RIP:

010 REJECT network = 00-03-55-BF;

IPX SAP Packet Filtering

SAP packets are used to identify the services and addresses of

servers attached to the network. The responses are used to

update a table in the router known as the Server Information

Table.

You define IPX SAP packet filtering rules in the IPX-SAP

protocol section of the filter file. You can filter SAP packets by

network, node, server, service-type, and socket.

The following rule example accepts SAP services from the

server name sales_1, with a socket number is less than 32:

IPX-SAP:

010 AND server = sales_1;

020 ACCEPT socket < 32;