ZyWALL 5/35/70 Series User’s Guide

The following table describes the labels in this screen.

Table 162 UPnP Ports

LABEL

DESCRIPTION

 

 

Reserve UPnP

Select this check box to have the ZyWALL retain UPnP created NAT rules even

NAT rules in flash

after restarting. If you use UPnP and you set a port on your computer to be fixed for

after system

a specific service (for example FTP for file transfers), this option allows the

bootup

ZyWALL to keep a record when your computer uses UPnP to create a NAT

 

forwarding rule for that service.

WAN Interface in

This field displays through which WAN port the ZyWALL is currently sending out

Use

traffic from UPnP-enabled applications. This field displays None when UPnP is

 

disabled or neither of the WAN ports has a connection.

The following read-only table displays information about the UPnP-created NAT mapping rule entries in the ZyWALL’s NAT routing table.

#

This is the index number of the UPnP-created NAT mapping rule entry.

 

 

Remote Host

This field displays the source IP address (on the WAN) of inbound IP packets.

 

Since this is often a wildcard, the field may be blank. When the field is blank, the

 

ZyWALL forwards all traffic sent to the External Port on the WAN interface to the

 

Internal Client on the Internal Port. When this field displays an external IP

 

address, the NAT rule has the ZyWALL forward inbound packets to the Internal

 

Client from that IP address only.

External Port

This field displays the port number that the ZyWALL “listens” on (on the WAN port)

 

for connection requests destined for the NAT rule’s Internal Port and Internal

 

Client. The ZyWALL forwards incoming packets (from the WAN) with this port

 

number to the Internal Client on the Internal Port (on the LAN). If the field

 

displays “0”, the ZyWALL ignores the Internal Port value and forwards requests on

 

all external port numbers (that are otherwise unmapped) to the Internal Client.

Protocol

This field displays the protocol of the NAT mapping rule (TCP or UDP).

 

 

Internal Port

This field displays the port number on the Internal Client to which the ZyWALL

 

should forward incoming connection requests.

Internal Client

This field displays the DNS host name or IP address of a client on the LAN. Multiple

 

NAT clients can use a single port simultaneously if the internal client field is set to

 

255.255.255.255 for UDP mappings.

Enabled

This field displays whether or not this UPnP-created NAT mapping rule is turned

 

on. The UPnP-enabled device that connected to the ZyWALL and configured the

 

UPnP-created NAT mapping rule on the ZyWALL determines whether or not the

 

rule is enabled.

Description

This field displays a text explanation of the NAT mapping rule.

 

 

Lease Duration

This field displays a dynamic port-mapping rule’s time to live (in seconds). It

 

displays “0” if the port mapping is static.

Apply

Click Apply to save your changes back to the ZyWALL.

 

 

Refresh

Click Refresh update the screen’s table.

 

 

28.4 Installing UPnP in Windows Example

This section shows how to install UPnP in Windows Me and Windows XP.

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Chapter 28 UPnP