ZyXEL Communications ZyXEL Vantage VSG-1000, Руководство пользователя

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VSG-1000 Vantage Service Gateway
LAN Device Management 9-1
This chapter describes how you can remotely manage devices on the LAN through the VSG.
9.1 LAN Device Management Overview
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in a packet. For
example, the source address of an outgoing packet, used within one network is changed to a different IP address
known within another network.
Traditionally, when you have a device (for example, a switch or a web server) on a LAN using NAT, you cannot
access the device from the WAN since the LAN device is assigned a private IP address.
Your VSG is a NAT-enabled device that makes your whole inside network appear as a single computer to the
outside world.
9.1.1 Port Mapping
To make LAN devices behind the VSG visible to the outside world, you configure a mapping between a virtual port
on the VSG and a server port on a LAN device. A virtual port is a port on the VSG that appears as a physical port to
the attached devices. A server port defines a server to which all specified requests are forwarded.
9.2 Configuring LAN Device Management
From the Main Menu screen, click Configuration and LAN Device Management to display the screen as shown
below.
Figure 9-1 LAN Device Management
The following table describes the labels in this screen.
Table 9-1 LAN Device Management
LABEL DESCRIPTION
No. This read-only field displays the index number of an entry.
Chapter 9
LAN Device Management