ZyXEL Communications Prestige 1600 - Manual (Page 90)

Prestige 1600 Universal Access Concentrator
10-8 Filter Configuration
Field Description Option
Destination: Port #. Equal
Source: IP
Addr Enter the source IP Address of the packet you
wish to filter. This field is a ignored if it is 0.0.0.0.
Source: IP
Mask Enter the IP subnet mask to apply to the Source:
IP Addr.
Source: 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 a ignored if it is 0. 0-65535
Source: Port #
Comp Select the comparison to apply to the source port
in the packet against the value given in Source:
Port #. None/Less/Grea
ter/Equal/Not
Equal
TCP Estab This field is applicable only when IP Protocol field
is 6, TCP. If Yes, the rule matches only
established TCP connections; else the rule
matches all TCP packets. Yes/No
More If Yes, a matching packet is passed to the next
filter rule before an action is taken; else 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/N/A
Log Select the 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 Select the action for a matching packet. Check Next Rule
Forward
Drop
Action Not
Matched Select the action for a packet not matching the
rule. Check Next Rule
Forward
Drop
Once you have completed filling in Menu 21.1.1 - TCP/IP Filter Rule, 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 - Filter Rules Summary.
The next diagram illustrates the logic flow of an IP filter.