ZyXEL Communications AMG1302-T10A, Руководство пользователя

Страница: 133 / 332

Chapter 9 Network Address Translation (NAT)
AMG1302-T10A User’s Guide
133
9.4 The Address Mapping Screen
Note: The
Address Mapping
screen is available only when you select
Full Feature
in
the
NAT > General
screen.
Ordering your rules is important because the Device applies the rules in the order that you specify.
When a rule matches the current packet, the Device takes the corresponding action and the
remaining rules are ignored. If there are any empty rules before your new configured rule, your
configured rule will be pushed up by that number of empty rules. For example, if you have already
configured rules 1 to 6 in your current set and now you configure rule number 9. In the set
summary screen, the new rule will be rule 7, not 9. Now if you delete rule 4, rules 5 to 7 will be
pushed up by 1 rule, so old rules 5, 6 and 7 become new rules 4, 5 and 6.
To change your Device’s address mapping settings, click
Network > NAT > Address Mapping
to
open the following screen.
Figure 71
Network > NAT > Address Mapping
The following table describes the fields in this screen.
Table 46
Network > NAT > Address Mapping
LABEL DESCRIPTION
# This is the rule index number.
Local Start IP This is the starting Inside Local IP Address (ILA). Local IP addresses are N/A for Server
port mapping.
Local End IP This is the end Inside Local IP Address (ILA). If the rule is for all local IP addresses, then
this field displays 0.0.0.0 as the
Local Start IP
address and 255.255.255.255 as the
Local End IP
address. This field is
N/A
for
One-to-one
and
Server
mapping types.
Global Start IP This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a
dynamic IP address from your ISP. You can only do this for Many-to-One and Server
mapping types.
Global End IP This is the ending Inside Global IP Address (IGA). This field is
N/A
for
One-to-one
,
Many-to-One
and
Server
mapping types.