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M2M Cellular Gateway
Configuration Path
ID
Global IP
Local IP
Rule
Scenario Operation Procedure
In above diagram, the Gateway is the gateway of Network‐A and the subnet of its
Intranet is 10.0.75.0/24. The gateway has the IP address of 10.0.75.2 for LAN interface
and 118.18.81.33 for WAN interface. It serves as a NAT router.
A LAN host with private IP address 10.0.75.102 has an embedded FTP file server in it.
The host is expected to be visible to the outside world with global IP address
118.18.81.44, but also be protected by the gateway firewall.
Configure a virtual computer in the gateway for the mapping between the global IP
address 118.18.81.44 and the local IP address 10.0.75.102. The gateway will take care
of all accessing to the FTP file server by server's global IP address, and it acts as a media
between the LAN host and the outside world by using its "Virtual Computer" feature.
So remote users can request for file services from the FTP file server, even it is existed
in a LAN host.
The Virtual Server setting allows user to redirect a communication request from one
address and port number combination to another while the packets are traversing a
network gateway, such as a router or firewall.
The Virtual Computer setting allows user to use the original NAT feature, and allows
you to setup the one‐to‐one mapping of multiple pairs of global IP address and local
IP address.
Enable Virtual Server and Virtual Computer
Go to Basic Network > NAT / Bridging > Virtual Server & Virtual Computer tab
Configuration
Item
Value setting
The box is unchecked by
Virtual Server
default
The box is checked by
Virtual Computer
default
Save
N/A
Undo
N/A
Index skipping is used to reserve slots for new function insertion, when required.
[Virtual Server & Virtual Computer]‐[Virtual Computer List]
1
118.18.81.44
10.0.75.102
■ Enable
Description
Check the Enable box to activate this NAT function
Check the Enable box to activate this NAT function
Click the Save button to save the settings.
Click Undo to cancel the settings.
95
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