3Com LANPLEX 2500, Operation Manual

Page: 70 / 139

Using Address Groups and Port Groups in a Packet Filter 7-13
To implement packet filtering in the designed scheme for this network, take
these steps:
1 Set up address groups as follows:
Address group 1 — Accounting
Address group 2 — Engineering A
Address group 3 — Engineering B
Note that the Mail server MAC address (00-01-02-03-04-17) is included in
each group. These address groups yield an address table as shown in
Figure 7-9 on page 7-75.
The address table on each system contains the same address listing and
group masks, but the port numbers are different numbers. The address
00-01-02-03-04-03 00-01-02-03-04-0a
00-01-02-03-04-04 00-01-02-03-04-0b
00-01-02-03-04-05 00-01-02-03-04-0c
00-01-02-03-04-06 00-01-02-03-04-0d
00-01-02-03-04-07 00-01-02-03-04-0e
00-01-02-03-04-08 00-01-02-03-04-16
00-01-02-03-04-09 00-01-02-03-04-17
00-01-02-03-04-0f 00-01-02-03-04-14
00-01-02-03-04-10 00-01-02-03-04-15
00-01-02-03-04-11 00-01-02-03-04-01
00-01-02-03-04-12 00-01-02-03-04-17
00-01-02-03-04-13
00-01-02-03-04-18 00-01-02-03-04-1e
00-01-02-03-04-19 00-01-02-03-04-1f
00-01-02-03-04-1a 00-01-02-03-04-20
00-01-02-03-04-1b 00-01-02-03-04-21
00-01-02-03-04-1c 00-01-02-03-04-02
00-01-02-03-04-1d 00-01-02-03-04-17