Nortel BCM50a - Filter Types and NAT

Chapter 11 Filter configuration 133
BCM50a Integrated Router Configuration — Advanced
Figure 62 Example Filter Rules Summary: Menu 21.1.3
After you have created the filter set, you must apply it.
1 Enter 11 from the main menu to go to menu 11.
2 Then enter 1 to open Menu 11.1 Remote Node Profile.
3 Go to the Edit Filter Sets field, press [SPACE BAR] to select Yes and press
[ENTER].
4 This brings you to menu 11.1.4. Apply a filter set (our example is filter set 3)
as shown in Figure 65.
5 After you enter the set numbers, press [ENTER] to confirm and leave menu
11.1.4.
Filter Types and NAT
There are two classes of filter rules, Generic Filter (Device) rules and protocol
filter (TCP/IP) rules. Generic filter rules act on the raw data that’s going through
between LAN and WAN. Protocol filter rules act on the IP packets. Generic and
TCP/IP filter rules are discussed in more detail in the next section. When NAT
(Network Address Translation) is enabled, the inside IP address and port number
Menu 21.1.3 - Filter Rules Summary
# A Type Filter Rules M m n
- - ---- --------------------------------------------------------------- - - -
1 Y IP Pr=6, SA=0.0.0.0, DA=0.0.0.0, DP=23 N D F
2 N
3 N
4 N
5 N
6 N
Enter Filter Rule Number (1-6) to Configure: 1