DSG NAT User manual
NAT Proxy Server
Administrator
Installation and Configuration Guide
06NATPM.IX1.01a.en1
DSG, DSG logo, InterPBX, InterServer, Blaze Series, VG5000, IP580, IP500, InterClient, NAT Proxy,
and S300X are trademarks of DSG Technology. Windows and Outlook Express are trademarks of
Microsoft Inc. Other names used here are trademarks of their respective owners.
Copyright © DSG Technology Inc. All rights reserved.
7F, 222 Cheng-Te Road, Sec. 4, Taipei, Taiwan 111
Tel：886288615558
Fax：886288615557
E-mail：sales@dsg.com.tw
http：//www.dsgtechnology.com
Content
3
Table of Contents
Chapter 1 Installing NAT Proxy Server .....................................................................5
Before You Start......................................................................................................6
Inatalling NAT Proxy .............................................................................................6
Installing and Configuring NAT Proxy...........................................................6
Connecting NAT Proxy via Console Port........................................................8
Chapter 2 Configuring NAT Proxy Server............................................................... 11
System Information ..............................................................................................12
InterServer Page ...................................................................................................12
Upload Pack..........................................................................................................13
Change Password .................................................................................................14
Reboot ...................................................................................................................14
Chapter 3 Settings on InterPBX System ...................................................................17
Settings on InterServer .........................................................................................18
Settings on Off-Premises Phones..........................................................................18
Settings on Off-Premises Voice Gateways ...........................................................19
System Specification....................................................................................................21
Index ............................................................................................................................22
Chapter 1 Installing NAT Proxy Server
5
Chapter 1
Installing NAT Proxy Server
Because of the lack of real IP addresses, many Internet facilities including
Blaze or Savanna Series IP PBX Communication Systems must be
installed behind NAT or firewall. When IP PBX system travels through
virtual or floating IP, sometimes the voice packets cannot traverse NAT
or firewall successfully and cause the problem of one-way or failed
phone communication.
This chapter guides you through the preparation, installation and basic
configuration of DSG NAT Proxy.
Chapter 1 Installing NAT Proxy Server
6
Before You Start
DSG NAT Proxy is an electronic product. Please follow the
recommendations below when you install or operate your system in
order to avoid any injury and damage.
Safety Recommendations
Always use ESD-preventive tools when you plug the power cord. Do not
disassemble or remove chassis cover of the system. If there is any
problem of your system, please contact our service representatives.
Environmental Prerequisites
DSG NAT Proxy needs to be installed in clean, dry, adequately ventilated
areas. The system can be placed in a control room or on a rack. Please
remain the control room in a suitable temperature and adequately
ventilated environment.
Installing NAT Proxy
Figure: NAT Proxy
Installing and Configuring NAT Proxy
1. Connecting to Power Cord
Plug one end of the power cord to the power connector on the rear panel
of NAT Proxy. Plug the other end of the power cord into a power outlet.
After you turn on the power switching on the rear panel, you can verify
the function by checking if the LED labeled “Power” is on.
2. Connecting to LAN
You need to connect NAT Proxy to your existing Ethernet network.
Connect an Ethernet cable from the “Network” RJ45 port on NAT Proxy
to any 10/100BaseT RJ45 port on a switching hub.
Chapter 1 Installing NAT Proxy Server
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3. Preparing a Computer
Prepare a computer with web browser and be sure it is on the same
subnet as of NAT Proxy. Change the computer’s IP settings if necessary.
The suggested web browser is Internet Explorer version 5.0 or later.
The default values of NAT Proxy are as follows:
Default IP Address: 192.168.1.1:88 (The service port is 88)
Default Gateway: 192.168.0.254
Default Subnet Mask: 255.255.0.0
4. Login NAT Proxy
Launch the web browser. On the address bar, type in the NAT Proxy’s
default IP address 192.168.1.1:88 to access the system. Then click on the
Login icon.
After you logged in, please input the default password “1234”, you may
change the password later.
Chapter 1 Installing NAT Proxy Server
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The “System Information” page will be displayed on the screen as
follows.
5. Basic IP Settings
Go to Main Menu>System Information. Enter the IP address, Gateway IP,
and Subnet Mask that are assigned to your NAT Proxy. You can set the
other items later.
You may change your computer IP setting to the original values after you
complete the setup. You will need to enter the new IP address to connect
to the NAT Proxy next time.
Connecting NAT Proxy via Console Port
When you forget the IP address of the NAT Proxy, you can connect a
computer to the console port of the NAT Proxy in order to check the
current IP address, gateway address, and subnet mask.
Chapter 1 Installing NAT Proxy Server
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1. Connect one end of the RS232 transmission line to the computer’s
COM port and the other end to the Console port of NAT Proxy.
2. Open the Hyper Terminal program. Enter the connection name and
set the baud rate to 9600 bps.
3. Turn off the power of NAT Proxy. Wait for a while and then turn on
the power again. The computer can start to connect to the
InterServer.
4. You can see the IP address from the “Hyper Terminal” page. You can
also change the IP address here. If you are going to change the IP
address, please press any key within 3 seconds to setup.
NOTE: The RS-232 DB-9 connector enclosed with the package is with pin
2/3, pin 4/6, and pin 7/8 shorted.
Chapter 2 Configuring NAT Proxy
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Chapter 2
Configuring NAT Proxy Server
This chapter guides you through the details of configuring DSG NAT
Proxy.
Chapter 2 Configuring NAT Proxy
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System Information
1. Launch the web browser. On the address bar, enter NAT Proxy’s IP
address. (The default IP address is http://192.168.1.1:88.)
2. Input your password. (The default password is”1234”.)
3. Click on “System Information”, you may modify the basic IP settings
of NAT Proxy.
4. Input the IP address, gateway IP and subnet mask assigned to NAT
Proxy. You need to use the assigned IP address for accessing NAT
Proxy next time.
NOTE: You need to assign a REAL IP address to NAT Proxy so that
InterServer and the associated extensions can get connected to it.
InterServer Page
Click on “InterServer Page”, you can create an InterServer list associated
with the NAT Proxy.
Chapter 2 Configuring NAT Proxy
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Status: The connection status between NAT Proxy and InterServer
will be displayed in front of the entry. If there is a “@” sign, it means
the connection is available. If no, the connection is failed or not
established.
ID: Please input the ID of the dedicated InterServer. The ID is a
unique ID assigned to each InterServer and needs to conform to the
one set on InterServer. For more details, please refer to InterPBX
Administration Installation and Configuration Guide: Multi-Server
Management>Server Information。
Server IP: Input the REAL IP address of the NAT router where the
InterServer is located. If a dynamic Internet connection is adopted,
such as PPPoE, and a fixed IP address for WAN connection is not
applicable, you may skip this item. Instead, please input the MAC
address of the InterServer as described below.
MAC: If a dynamic IP is applicable for InterServer’s WAN connection,
input the InterServer’s MAC address.
As long as listed on the InterServer Page, the InterServer and its
associated off-premises extensions and voice gateways will not need to
open specific service ports when they are deployed behind NAT. DSG
NAT Proxy will help voice packets traverse NAT automatically.
Upload Pack
If a new software version is available, you may save it to a location where
the computer can reach for updating.
1. Go to Main Menu> Upload Pack.
Chapter 2 Configuring NAT Proxy
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2. Click on the Browse button and select the path and the file for
upgrade.
3. Click the Upload Application now! button to upgrade the system.
After the upgrade procedure is complete, please reboot the system.
Notice that there is no call transmitted on the system.
Change Password
Please change your password periodically for security reason.
1. Go to Main Menu>Change Password.
2. Input your Current Password.
3. In “New Password”, input your new password and reconfirm it.
Note: Your password should not exceed 19 alphanumeric characters.
Reboot
After you change the IP address, you need to reboot the system. Click on
the Reboot button to restart the system.
Chapter 2 Configuring NAT Proxy
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Chapter 3 Settings on InterPBX System
1
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Chapter 3
Settings on InterPBX System
When adopting NAT Proxy, your InterPBX IP Communication System,
including Blaze, Savanna series IP-PBX and the associated off-premise
extensions and voice gateways, needs to enable the NAT function as well.
Chapter 3 Settings on InterPBX System
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Settings on InterServer
You need to enroll the NAT Proxy IP address to the InterServer.
1. Launch the web browser. On the address bar, enter your InterServer’s
IP address. (Please use service port 88.)
2. Click on the Administrator icon and use your user name and
password to login.
3. Go to Main Menu>Gateway Configuration>NAT Proxy, the ”NAT
Proxy Parameter” page will be displayed.
4. On ”IP Address of Master Proxy”, input the primary NAT Proxy IP
address.
5. If you have more than one NAT Proxy, input its IP address at ”IP
Address of Slave Proxy”. When the Master does not function, the
Slave will take it over.
After you enable the NAT Proxy function, you will not need to open the
specific service ports on NAT Router where InterServer is located. When
traversing NAT or firewall is required, the NAT Proxy will redirect and
rout the calls.
Please notice that, on your NAT Proxy, both Master and Slave, you have
to enroll the InterServer’s ID and IP address or MAC address.
NOTE: Please make sure your InterServer supports NAT Proxy function
before using it. The InterServer version should be CS1.02b or later. To
know your InterServer version, please refer to InterPBX Administrator
Installation and Configuration Guide: Operation Management>General
Information.
Settings on Off-Premises Phones
Chapter 3 Settings on InterPBX System
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On off-premises IP phones, you need to set the NAT Proxy’s IP address
on ”PBX Server IP” item.
IP580, IP500: Press and hold the MENU button for 3 seconds
and enter the password till entering setup mode. Press button
several times till it displayed ”PBX Server IP” item. Press
button to edit. Input the NAT proxy’s IP address. Press the
button again to save.
SoftPhone: After launch the SoftPhone, on “Program Settings”
window, input NAT Proxy’s IP address at “Server IP” item.
When the NAT Proxy function is enabled on off-premises extensions,
opening specific service ports is not required even when installed behind
NAT. The NAT Proxy will help calls traverse NAT and established the
connection.
NOTE: Please make sure your IP Phones support NAT Proxy function
before using it. The IP580 version should be A1.13d or later. The IP500
version should be B1.01a or later. The SoftPhone version should be
SP1.07a or later.
Settings on Off-Premises Voice Gateways
On off-premises Voice Gateways, you need to set the NAT Proxy’s IP
address on ”PBX Server IP” item.
1. Launch the web browser. On the address bar, enter your VG5000’s IP
address. (Please use service port 89.)
2. Click on the login icon and use your user name and password to
login.
Chapter 3 Settings on InterPBX System
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3. Go to Main Menu>System Information. On “PBX Server” item, input
the NAT Proxy’s IP address.
NOTE: Please make sure your Voice Gateways support NAT Proxy
function before using it. The VG5000 version should be AG1.06b or later.
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