WebSpeed
Product Update Bulletin
Network Address Translation (NAT) and the WebSpeed Distributed Configuration
Network Address Translation, or NAT, is an Internet standard that supports one set of Internet Protocol (IP) addresses for external traffic and a second set of addresses for internal use. A router translates these IP addresses between network domains, hiding internal addresses and generating globally unique, routable addresses. NAT, and IP Convert, are general forms to mask IP addresses, shielding this information from the Internet. In this manner, the NAT process helps promote more secure connections between clients and WebSpeed.
Starting with Progress Version 9.1A and WebSpeed 3.1A, Progress and WebSpeed support NAT in a distributed configuration arrangement through a registration process. The value you select for the Registration Mode indicates how the WebSpeed Broker identifies its hostname when the WebSpeed Broker registers with its controlling NameServer. When a client application attempts to connect to an application service on a host machine that the WebSpeed Broker supports, the hostname information is passed to the client application, provided that the information can be authenticated.
The specific value you set up for the Registration Mode depends on the connection arrangement you want. The “Procedure Using the Progress Explorer” and the "Procedure Using the ubroker.properties File" identify and describe the Registration mode values.
Procedure Using the Progress Explorer
To make a client connection through a NAT firewall using the Progress Explorer Tool, perform these steps:
- Double click the WebSpeed folder on the left-hand side of the main Progress Explorer window.
- Right click the broker object.
- Choose Properties from the shortcut menu.
- Click on Broker
Controlling NameServer Information to display properties associated with the WebSpeed Broker. The wsbroker1 Properties window shown below shows the location of the Registration Mode field and its three possible values.
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- Select the Registration Mode value you want to set. Table A–7 defines each value.
- Click the OK button.
Procedure Using the ubroker.properties File
To make a client connection through a NAT firewall using the
ubroker.properties
file, perform these steps:
- Search the file for the broker property section, or sections, that you want to change.
- Set the value of the registrationMode property. Table A–8 defines the values from which you can choose to enter in the registrationMode property.
NOTE: For more information, see the “GENERAL INSTRUCTIONS for configuring the Unified Broker and NameServer for WebSpeed and AppServers” in theubroker.properties
file.
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