ZyXEL Communications Prestige 792H, User Manual

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Prestige 792H User’s Guide
28-18 Filter Configuration
Figure 28-16 Sample Filter Rules Summary — Menu 21.1
Step 5. Type 1 to configure the first filter rule. Make the entries in this menu as shown next. When you
press [ENTER] to confirm, the following screen appears. Note that there is only one filter rule in
this set.
Menu 21.1 - 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
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).
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 ).