Table 116 Menu 21.1.x.x: TCP/IP Filter Rule
FIELD | DESCRIPTION |
|
|
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. |
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 #. |
| Options are None, Equal, Not Equal, Less and Greater. |
|
|
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. |
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. |
|
|
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. |
|
|
Action Matched | Press [SPACE BAR] and then [ENTER] to select the action for a matching packet. |
| Options are Check Next Rule, Forward and Drop. |
|
|
Action Not | Press [SPACE BAR] and then [ENTER] to select the action for a packet not |
Matched | matching the rule. |
| Options are Check Next Rule, Forward and Drop. |
|
|
When you have Menu 21.1.x.x - 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.x - Filter Rules Summary.
The following figure illustrates the logic flow of an IP filter.
283 | Chapter 30 Filter Configuration |