ZyXEL Communications P-334 - Manual (Page 263)

Prestige 334 User’s Guide
Chapter 27 Filter Configuration 262
The following figure illustrates the logic flow of an IP filter.
Source
IP Address Enter the source IP Address of the packet you wish to filter. This
field is ignored if it is 0.0.0.0.
0.0.0.0
IP Mask Enter the IP mask to apply to the Source: IP Addr. 0.0.0.0
Port # Enter the source port of the packets that you wish to filter. The
range of this field is 0 to 65535. This field is ignored if it is 0.
0-65535
Port # Comp Press [SPACE BAR] and then [ENTER] to select the comparison
to apply to the source port in the packet against the value given
in Source: Port #.
None
Less
Greater
Equal
Not Equal
TCP Estab This field is applicable only when the IP Protocol field is 6, TCP.
Press [SPACE BAR] and then [ENTER] to select Yes, to have
the rule match packets that want to establish a TCP connection
(SYN=1 and ACK=0); if No, it is ignored.
Yes
No
More Press [SPACE BAR] and then [ENTER] to select Yes or No. If
Yes, a matching packet is passed to the next filter rule before an
action is taken; if No, the packet is disposed of according to the
action fields.
If More is Yes, then Action Matched and Action Not Matched
will be N/A.
Yes
No
Log Press [SPACE BAR] and then [ENTER] to select a logging
option from the following:
None – No packets will be logged.
Action Matched - Only packets that match the rule parameters
will be logged.
Action Not Matched - Only packets that do not match the rule
parameters will be logged.
Both – All packets will be logged.
None
Action
Matched
Action Not
Matched
Both
Action Matched Press [SPACE BAR] and then [ENTER] to select the action for a
matching packet.
Check Next
Rule
Forward
Drop
Action Not Matched Press [SPACE BAR] and then [ENTER] to select the action for a
packet not matching the rule.
Check Next
Rule
Forward
Drop
When you have Menu 21.1.1.1 - TCP/IP Filter Rule configured, press [ENTER] at the message “Press
ENTER to Confirm” to save your configuration, or press [ESC] to cancel. This data will now be
displayed on Menu 21.1.1 - Filter Rules Summary.
Table 87 TCP/IP Filter Rule
FIELD DESCRIPTION OPTIONS