Filter Types And Sua - ZyXEL Communications Prestige 642 User Manual

Menu 21.3 - Filter Rules Summary
# A Type
- - ---- --------------------------------------------------------------- - - -
1 Y IP Pr=6, SA=0.0.0.0, DA=0.0.0.0, DP=23
2 N
3 N
4 N
5 N
6 N
Enter Filter Rule Number (1-6) to Configure: 1
This shows you that you have
configured and activated (A =
Y) a TCP/IP filter rule (Type =
IP, Pr = 6) for destination
telnet ports (DP = 23).
Figure 8-11 Example Filter Rules Summary – Menu 21.3
After you've created the filter set, you must apply it.
Step 1.
Enter 11 from the main menu to go to Menu 11.
Step 2. Go to the Edit Filter Sets field, press the [SPACEBAR] to toggle Yes to No and press
[ENTER].
This brings you to Menu 11.5. Apply the TELNET_WAN filter set (filter set 3) as shown previously.
8.5

Filter Types and SUA

There are two types of filter rules, Device Filter (Generic) rules and Protocol Filter (TCP/IP and IPX)
rules. Device Filter rules act on the raw data from/to LAN and WAN. Protocol Filter rules act on the IP
and IPX packets. When NAT/SUA (Network Address Translation/Single User Account) is enabled, the
Filter Configuration
Prestige 642 ADSL Internet Access Router
Filter Rules
M = N means an action can be taken
immediately. The action is to drop the
packet (m = D) if the action is matched and
to forward the packet immediately (n = F) if
the action is not matched no matter whether
there are more rules to be checked (there
aren't in this example).
M m n
N D F
8-17