Chapter 7: Network Menu and Forms 81
Figure 7.1: Expert - Firewall Configuration Add Rule and Edit Rule Dialog Boxes
Inverted checkboxes
If the Inverted checkbox is enabled for the corresponding option, the target action is performed on packets that do not match any of the criteria specified in that line.
For example, if you select DROP as the target action from the Target
Target pull-down menu options
The Target
Source or destination IP and mask
If you add a value in the Source IP field, incoming packets are filtered for the specified IP address and if you add a value in the Destination IP field, outgoing packets are filtered for the specified IP address. A value in the Mask field means incoming or outgoing packets are filtered for IP addresses from the network in the specified subnet.
Protocol
You can select a protocol for filtering. Fields that appear for each protocol are explained in the following sections.