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Page 221 / 382 Scroll up to view Page 216 - 220
Chapter 18 Remote Management
P-870HN-51b User’s Guide
221
18.5
The IP Address Screen
Click
Advanced > Remote MGMT > IP Address
to open the following screen.
Use this screen to specify the “trusted” computers from which an administrator
may use a service to manage the Device.
Figure 111
IP Address
The following table describes the fields in this screen.
Table 80
IP Address
LABEL
DESCRIPTION
Access Control
Mode
Select
Enable
to activate the secured client list. Select
Disable
to
disable the list without deleting it.
IP Address
This is the IP address of the trusted computer from which you can
manage the Device.
Remove
Select this check box and click the
Remove
button to delete this entry
from the Device.
Add
Click this button to create a new entry.
Remove
Click this button to delete the selected entry.
Page 222 / 382
Chapter 18 Remote Management
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222
18.5.1
Adding an IP Address
Click the
Add
button in the
IP Address
screen to open the following screen.
Figure 112
IP Address: Add
The following table describes the fields in this screen.
Table 81
IP Address: Add
LABEL
DESCRIPTION
IP Address
Enter the IP address of the trusted computer from which you can
manage the Device.
Apply/Save
Click this button to save your changes back to the Device.
Back
Click this button to return to the previous screen without saving.
Page 223 / 382
P-870HN-51b User’s Guide
223
C
HAPTER
19
Universal Plug-and-Play (UPnP)
19.1
Overview
Universal Plug and Play (UPnP) is a distributed, open networking standard that
uses TCP/IP for simple peer-to-peer network connectivity between devices. A
UPnP device can dynamically join a network, obtain an IP address, convey its
capabilities and learn about other devices on the network. In turn, a device can
leave a network smoothly and automatically when it is no longer in use.
19.1.1
What You Can Do in this Chapter
The
UPnP
screen lets you enable UPnP on the Device (
Section 19.3 on page 224
).
19.2
What You Need to Know
How do I know if I'm using UPnP?
UPnP hardware is identified as an icon in the Network Connections folder
(Windows XP). Each UPnP compatible device installed on your network will appear
as a separate icon. Selecting the icon of a UPnP device will allow you to access the
information and properties of that device.
NAT Traversal
UPnP NAT traversal automates the process of allowing an application to operate
through NAT. UPnP network devices can automatically configure network
addressing, announce their presence in the network to other UPnP devices and
enable exchange of simple product and service descriptions. NAT traversal allows
the following:
•
Dynamic port mapping
•
Learning public IP addresses
•
Assigning lease times to mappings
Page 224 / 382
Chapter 19 Universal Plug-and-Play (UPnP)
P-870HN-51b User’s Guide
224
Windows Messenger is an example of an application that supports NAT traversal
and UPnP.
See the NAT chapter for more information on NAT.
Cautions with UPnP
The automated nature of NAT traversal applications in establishing their own
services and opening firewall ports may present network security issues. Network
information and configuration may also be obtained and modified by users in some
network environments.
When a UPnP device joins a network, it announces its presence with a multicast
message. For security reasons, the Device allows multicast messages on the LAN
only.
All UPnP-enabled devices may communicate freely with each other without
additional configuration. Disable UPnP if this is not your intention.
UPnP and ZyXEL
ZyXEL has achieved UPnP certification from the Universal Plug and Play Forum
UPnP™ Implementers Corp. (UIC). ZyXEL's UPnP implementation supports
Internet Gateway Device (IGD) 1.0.
See the following sections for examples of installing and using UPnP.
19.3
The UPnP Screen
Click
Advanced > UPnP
to display the screen shown next.
See
Section 19.1 on page 223
for more information.
Figure 113
Advanced > UPnP
Page 225 / 382
Chapter 19 Universal Plug-and-Play (UPnP)
P-870HN-51b User’s Guide
225
The following table describes the fields in this screen.
19.4
Installing UPnP in Windows Example
This section shows how to install UPnP in Windows Me and Windows XP.
Installing UPnP in Windows Me
Follow the steps below to install the UPnP in Windows Me.
1
Click
Start
and
Control Panel
. Double-click
Add/Remove Programs
.
Table 82
Advanced > UPnP
LABEL
DESCRIPTION
Activate Universal Plug
and Play (UPnP) Feature
Select this check box to enable UPnP. Be aware that anyone
could use a UPnP application to open the Web Configurator's
login screen without entering the Device's IP address
(although you must still enter the password to access the web
configurator).
Apply/Save
Click this to save the setting to the Device.
Cancel
Click this to return to the previously saved settings.

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