480 Chapter 7: Understanding Access List Security
topic pretty well. The explanations then should focus on topics that are less obvious from
reading the manual; these are the types of tidbits that you get from the instructor in a well-taught
class. When discussing IPX packet filters, I will be focusing on these tidbits. If you are new to
IPX access lists, you probably will want to read the IOS documentation or the Cisco Press book
Interconnecting Cisco Network Devices.
Standard IPX access lists can check the source and destination network number. They also can
check the node part of the source and destination addresses, and use a wildcard mask to examine
the node part of the IPX addresses.
Figure 7-7 and Example 7-11 provide an example network and configuration.
Figure 7-7
IPX Standard Access List Example
Client 5
Client 6
200
102
301
Server 2
Server 1
Server 4
Client 4
Client 2
Client 1
R1
s0
s1
R2
R3
1001
2002
2001
101
302
1002
Server 3
Client 3
3001
3002
ch07.fm Page 480 Monday, March 20, 2000 5:14 PM