ZyXEL Communications Broadband Security Gateway P-312, Руководство пользователя, Страница: 83 / 254

P312 Broadband Security Gateway
6-10 NAT
moved down by one rule. Delete means to delete the
selected rule and then all the rules after the selected
one will be advanced one rule.
Save Set means to
save the whole set (note when you choose this action,
the
Select Rule item will be disabled).
Select Rule When you choose Edit , Insert Before or Delete in the
previous field the cursor jumps to this field to allow you
to select the rule to apply the action in question.
N.B.: Save Set in the Action field means to save the whole set. You must do this if you
make any changes to the set – including deleting a rule. No changes to the set take
place until this action is taken.
Be careful when ordering your rules as each rule is executed in turn beginning from
rule 1.
Selecting
Edit
in the Action field and then selecting a rule brings up the following menu, Menu 15.1.1.1 -
Address Mapping Rule in which you can edit an individual rule and configure the Type, Local and Global
Start/End IPs displayed in Menu 15.1.1.
Figure 6-9 Editing an Individual Rule in a Set
The following table describes the fields in this screen.
Table 6-6 Menu 15.1.1.1 – configuring an individual rule
Field Description Option/Example
Type Press the [SPACEBAR] to toggle through a
total of 5 types. These are the mapping
types discussed above (
see
Table 6-2
).
Type Server allows us to specify multiple
servers of different types behind NAT to this
machine.
See section 6.4.3 below for some
One-to-One
Many-to-One
Many-to-Many
Overload
Many-to-Many No
Overload
Menu 15.1.1.1 Address Mapping Rule
Type= One-to-One
Local IP:
Start=
End = N/A
Global IP:
Start=
End = N/A
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.