Справочник Пользователя для ZyXEL Communications prestige 314 plus

Prestige 314 PLUS Broadband Sharing Gateway with 4-Port Switch 

7-16 

Filter Configuration 

Step 7.  Enter 2 in the above menu to configure the second rule. Configure this filter rule with port number 

as 23 (Telnet) as shown in the next screen (after you press [ENTER] to confirm. 

Menu 21.7 - 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=21               N D N 
 2 N 
 4 N 
 5 N 
 6 N 
 
 
         Enter Filter Rule Number (1-6) to Configure: 2 
 

This shows you that you have 

configured and activated (A = Y) a 

TCP/IP filter rule (Type = IP, Pr = 6) 

for destination FTP ports (DP = 21).

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 = N) if the action is not matched 

and there are more rules to be checked (there is 

one more in this example).