Chapter 10 Network Address Translation (NAT)
AMG1001-T/AMG1011-T Series User’s Guide
71
10.6 NAT Technical Reference
This section contains more information regarding NAT.
10.6.1 NAT Definitions
Inside/outside denotes where a host is located relative to the AMG1001-T/AMG1011-T, for example,
the computers of your subscribers are the inside hosts, while the web servers on the Internet are
the outside hosts.
Public/local denotes the IP address of a host in a packet as the packet traverses a router, for
example, the local address refers to the IP address of a host when the packet is in the local
network, while the public address refers to the IP address of the host when the same packet is
traveling in the WAN side.
Note that inside/outside refers to the location of a host, while public/local refers to the IP address of
a host used in a packet. Thus, an inside local address is the IP address of an inside host in a packet
Public End IP
This is the ending public IP address. This field is
N/A
for
One-to-One
,
Many-to-One
and
Server
mapping types.
Address Mapping List
Rule
This is the rule’s index number.
Type
1-1
: One-to-One mode maps one local IP address to one public IP address. Note that port
numbers do not change for the One-to-One NAT mapping type.
M-1
: Many-to-One mode maps multiple local IP addresses to one public IP address. This is
equivalent to the
Single IP
feature that previous ZyXEL routers supported only.
M-M Ov
(Overload): Many-to-Many Overload mode maps multiple local IP addresses to
shared public IP addresses.
MM No
(No Overload): Many-to-Many No Overload mode maps each local IP address to
unique public IP addresses.
Server
: This type allows you to specify inside servers of different services behind the NAT
to be accessible to the outside world.
Local Start IP
This is the starting inside local IP address. Local IP addresses are
N/A
for
Server
port
mapping.
Local End IP
This is the ending inside local IP address. 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.
Public Start IP
This is the starting inside public IP address. 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.
Public End IP
This is the ending inside public IP address. This field is
N/A
for
One-to-one
,
Many-to-
One
and
Server
mapping types.
SAVE
Click this to save your changes.
DELETE
Click this to remove the rule.
BACK
Click this to return to the previous screen without saving.
CANCEL
Click this to restore your previously saved settings.
Table 25
Network > NAT > Address Mapping (continued)
LABEL
DESCRIPTION
Summary of Contents for AMG1001-T Series
Page 10: ...10 PART I User s Guide ...
Page 11: ...11 ...
Page 20: ...Chapter 1 Introducing the AMG1001 T AMG1011 T AMG1001 T AMG1011 T Series User s Guide 20 ...
Page 25: ...25 PART II Technical Reference ...
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