Zyxel F1000 Router Manual PDF (Setup & Configuration Guide)

Page 156 / 359 Scroll up to view Page 151 - 155

Chapter 9 Network Address Translation (NAT)

eircom F1000 Modem User’s Guide

156

9.2.1

Add/Edit Port Forwarding

Click

Add new rule

in the

Port Forwarding

screen or click the

Edit

icon next to an existing rule to

open the following screen.

Figure 83

Port Forwarding: Add/Edit

The following table describes the labels in this screen.

Protocol

This shows the IP protocol supported by this virtual server, whether it is

TCP

,

UDP

, or

TCP/

UDP

.

Modify

Click the

Edit

icon to edit this rule.

Click the

Delete

icon to delete an existing rule.

Table 54

Network Setting > NAT > Port Forwarding (continued)

LABEL

DESCRIPTION

Table 55

Port Forwarding: Add/Edit

LABEL

DESCRIPTION

Active

Clear the checkbox to disable the rule. Select the check box to enable it.

Service Name

Enter a name to identify this rule using keyboard characters (A-Z, a-z, 1-2 and so on).

WAN Interface

Select the WAN interface through which the service is forwarded.

You must have already configured a WAN connection with NAT enabled.

WAN IP

Enter the WAN IP address for which the incoming service is destined. If the packet’s

destination IP address doesn’t match the one specified here, the port forwarding rule will

not be applied.

Page 157 / 359

Chapter 9 Network Address Translation (NAT)

eircom F1000 Modem User’s Guide

157

9.3

The Applications Screen

This screen provides a summary of all NAT applications and their configuration. In addition, this

screen allows you to create new applications and/or remove existing ones.

To access this screen, click

Network Setting > NAT > Applications

. The following screen

appears.

Figure 84

Network Setting > NAT > Applications

Start Port

Enter the original destination port for the packets.

To forward only one port, enter the port number again in the

End Port

field.

To forward a series of ports, enter the start port number here and the end port number in

the

End Port

field.

End Port

Enter the last port of the original destination port range.

To forward only one port, enter the port number in the

Start

Port

field above and then

enter it again in this field.

To forward a series of ports, enter the last port number in a series that begins with the port

number in the

Start Port

field above.

Translation

Start Port

This shows the port number to which you want the Device to translate the incoming port.

For a range of ports, enter the first number of the range to which you want the incoming

ports translated.

Translation End

Port

This shows the last port of the translated port range.

Server IP

Address

Enter the inside IP address of the virtual server here.

Protocol

Select the protocol supported by this virtual server. Choices are

TCP

,

UDP

, or

TCP/UDP

.

Wake up this

target by Wake

On Lan(WOL)

Select this and enter the MAC address of a LAN device if you want to turn the device on

remotely from the Internet or the WAN network using this port forwarding rule.

MAC address of

WOL device

Enter the MAC address of the LAN device. A MAC address consists of six hexadecimal

character pairs.

OK

Click

OK

to save your changes.

Cancel

Click

Cancel

to exit this screen without saving.

Table 55

Port Forwarding: Add/Edit (continued)

LABEL

DESCRIPTION

Page 158 / 359

Chapter 9 Network Address Translation (NAT)

eircom F1000 Modem User’s Guide

158

The following table describes the labels in this screen.

9.3.1

Add New Application

This screen lets you create new NAT application rules. Click

Add new application

in the

Applications

screen to open the following screen.

Figure 85

Applications: Add

The following table describes the labels in this screen.

Table 56

Network Setting > NAT > Applications

LABEL

DESCRIPTION

Add new

application

Click this to add a new NAT application rule.

Application

Forwarded

This field shows the type of application that the service forwards.

WAN Interface

This field shows the WAN interface through which the service is forwarded.

Server IP

Address

This field displays the destination IP address for the service.

Modify

Click the

Delete

icon to delete the rule.

Table 57

Applications: Add

LABEL

DESCRIPTION

WAN Interface

Select the WAN interface that you want to apply this NAT rule to.

Server IP

Address

Enter the inside IP address of the application here.

Application

Category

Select the category of the application from the drop-down list box.

Application

Forwarded

Select a service from the drop-down list box and the Device automatically configures the

protocol, start, end, and map port number that define the service.

View Rule

Click this to display the configuration of the service that you have chosen in

Application

Fowarded

.

OK

Click

OK

to save your changes.

Cancel

Click

Cancel

to exit this screen without saving.

Page 159 / 359

Chapter 9 Network Address Translation (NAT)

eircom F1000 Modem User’s Guide

159

9.4

The Port Triggering Screen

Some services use a dedicated range of ports on the client side and a dedicated range of ports on

the server side. With regular port forwarding you set a forwarding port in NAT to forward a service

(coming in from the server on the WAN) to the IP address of a computer on the client side (LAN).

The problem is that port forwarding only forwards a service to a single LAN IP address. In order to

use the same service on a different LAN computer, you have to manually replace the LAN

computer's IP address in the forwarding port with another LAN computer's IP address.

Trigger port forwarding solves this problem by allowing computers on the LAN to dynamically take

turns using the service. The Device records the IP address of a LAN computer that sends traffic to

the WAN to request a service with a specific port number and protocol (a "trigger" port). When the

Device's WAN port receives a response with a specific port number and protocol ("open" port), the

Device forwards the traffic to the LAN IP address of the computer that sent the request. After that

computer’s connection for that service closes, another computer on the LAN can use the service in

the same manner. This way you do not need to configure a new IP address each time you want a

different LAN computer to use the application.

For example:

Figure 86

Trigger Port Forwarding Process: Example

1

Jane requests a file from the Real Audio server (port 7070).

2

Port 7070 is a “trigger” port and causes the Device to record Jane’s computer IP address. The

Device associates Jane's computer IP address with the "open" port range of 6970-7170.

3

The Real Audio server responds using a port number ranging between 6970-7170.

4

The Device forwards the traffic to Jane’s computer IP address.

5

Only Jane can connect to the Real Audio server until the connection is closed or times out. The

Device times out in three minutes with UDP (User Datagram Protocol) or two hours with TCP/IP

(Transfer Control Protocol/Internet Protocol).

Click

Network Setting > NAT > Port Triggering

to open the following screen. Use this screen to

view your Device’s trigger port settings.

Figure 87

Network Setting > NAT > Port Triggering

Page 160 / 359

Chapter 9 Network Address Translation (NAT)

eircom F1000 Modem User’s Guide

160

The following table describes the labels in this screen.

9.4.1

Add/Edit Port Triggering Rule

This screen lets you create new port triggering rules. Click

Add new rule

in the

Port Triggering

screen or click a rule’s

Edit

icon to open the following screen.

Figure 88

Port Triggering: Add/Edit

Table 58

Network Setting > NAT > Port Triggering

LABEL

DESCRIPTION

Add new rule

Click this to create a new rule.

#

This is the index number of the entry.

Status

This field displays whether the port triggering rule is active or not. A yellow bulb signifies

that this rule is active. A gray bulb signifies that this rule is not active.

Service Name

This field displays the name of the service used by this rule.

WAN Interface

This field shows the WAN interface through which the service is forwarded.

Trigger Start

Port

The trigger port is a port (or a range of ports) that causes (or triggers) the Device to record

the IP address of the LAN computer that sent the traffic to a server on the WAN.

This is the first port number that identifies a service.

Trigger End

Port

This is the last port number that identifies a service.

Trigger Proto.

This is the trigger transport layer protocol.

Open Start Port

The open port is a port (or a range of ports) that a server on the WAN uses when it sends

out a particular service. The Device forwards the traffic with this port (or range of ports) to

the client computer on the LAN that requested the service.

This is the first port number that identifies a service.

Open End Port

This is the last port number that identifies a service.

Open Proto.

This is the open transport layer protocol.

Modify

Click the

Edit

icon to edit this rule.

Click the

Delete

icon to delete an existing rule.

Rate

Popular Zyxel Models

Famous Router IPs

Famous Router Companies

Bookmark Our Site

Share