Clicking an “Add new table_name chainname rule” button brings up a dialog like the one shown in the following figure, which shows the dialog that appears when the administrative user clicks the “Add new NAT prerouting rule” button.Network Æ Firewall: Add Rule DialogSee Filter Options for Packet Filtering Rules for definitions of the filter options on the dialog shown in Network Æ Firewall: Add Rule Dialog.
2. Go to Network Æ Firewall.
3. Click the “Add new table_name chainname rule” button underneath the entry for the chain to which you wish to add a rule.
b.
c.
d. Depending on which chain you selected, select an input or output interface from the “Input interface” or “Output interface” pull-down menu.
5. To Edit an Administrator-added Packet Filtering (Firewall) Rule
2. Go to Network Æ Firewall.
b. Accept or change the value entered in the Source IP/mask field, using the form: hostIPaddress or networkIPaddress/NN, where NN is the subnet length.
c. Accept or change the value entered in the Destination IP/mask in the form: hostIPaddressr networkIPaddress/NN, where NN is the subnet length.
d. Depending on which type of chain is selected, accept or change either the input or output interface selected from the “Input interface” or “Output interface” pull-down menu.
e. Accept or change the types of packets to be filtered selected from the “Fragments” pull-down menu.
5.