User manual

8-26 Packet Filter

IPX Packet Filter Rule Examples

This section briefly describes IPX packet filtering options, and

provides rule examples for each IPX packet filtering capability.

This section includes the following topics:

• Source and Destination Network Filtering

• Source and Destination Host Filtering

• Source and Destination Socket Number Filtering

• RIP Packet Filtering

• SAP Packet Filtering

• IPX Call Filtering

• Generic IPX Filtering

Source and Destination Network Filtering

IPX network numbers must be specified as an network number

no greater than 8-digits in hexadecimal format. The following

rule example rejects IPX packets with a source address of

00-03-42-BF:

IPX:

010 REJECT src-net = 00-03-42-BF;

Source and Destination Host Filtering

Host addresses must consist of the 8-digit network number,

followed by the four digit node number in hexadecimal format.

The following rule example accepts IPX packets with a

destination address of 04-0B-43-AA:

IPX:

010 ACCEPT dest-host = 04-0B-43-AA;

Source and Destination Socket Number Filtering

Sockets numbers represent communications interfaces that let

an application access a network protocol by "opening a socket"

and declaring a destination. Sockets are useful because they

provide a simple way to direct an application onto the network

(TCP/IP protocol).