IBM Support

MS81: IBM MQ Internet Pass-Thru



IBM MQ Internet Pass-Thru is an IBM MQ base product extension that can be used to implement messaging solutions between remote sites across the internet.

Download Description

Please note:
IBM MQ Internet Pass-Thru (MQIPT) is now an optional component of IBM MQ.  The latest versions of MQIPT can be found on  FixCentral. The MQIPT SupportPac (MS81) reached end of support on 30th September 2020.  New fix packs and JRE updates for the MQIPT SupportPac are available only to customers with an extended support agreement on Solaris.

IBM MQ Internet Pass-Thru (MQIPT) makes the passage of IBM MQ channel protocols into and out of a firewall simpler and more manageable, by tunnelling the protocols inside HTTP or by acting as a proxy.

MQIPT runs on the platforms indicated in the hardware and software requirements below. It uses the Java runtime Environment (JRE) supplied.

Possible Uses
Used as a proxy, MQIPT is placed in the De-Militarized Zone (DMZ) on an Internet firewall and relays IBM MQ protocol flows from an IBM MQ client or queue manager on the external Internet, to a destination queue manager inside the firewall. This enables inbound IBM MQ communication through the firewall from an address that is in the secure DMZ. This is likely to be more acceptable to firewall administrators than an arbitrary external Internet address.

Placing a pair of MQIPT servers in the path of an IBM MQ channel connection enables HTTP wrappers to be added to the protocol flow. This enables the IBM MQ connection to pass inbound through an HTTP application firewall, or outbound through an HTTP proxy. A pair of MQIPT servers can also be used to encrypt all data flows, using SSL or TLS.

MQIPT can also act as a concentrator of IBM MQ connections, which simplifies firewall configuration when multiple IBM MQ clients or queue managers require access through an Internet firewall.

MQIPT can be configured to act as a SOCKS client or SOCKS server, for making outbound connections.

These modes of operation of MQIPT give greater flexibility to the connection of IBM MQ channels through a variety of firewall and network topologies and facilitate many application models - particularly in the B2B environment.

MQIPT does not require any changes to IBM MQ application code, and only a minor modification to the hostname/port setting in MQ channel definitions.

Skill Level Required
This SupportPac should be installed by an IBM MQ system administrator or network administrator. Configuration and implementation of this SupportPac requires a basic understanding of TCP/IP networking and a knowledge of Internet firewall administration.

New in this Release

  • Security fixes and JRE update for Solaris.

For information about new features and changes in MQIPT Version 9.1.4 and higher, see What's new and changed in IBM MQ 9.2.0 in IBM Documentation.

Security Notice
Anon and NULL algorithms are no longer enabled by default from Version 9.1.4 and in the latest JRE update for MQIPT Version 2.1. This affects the following CipherSuites in MQIPT:

3DES ciphers are no longer considered secure and are disabled by default from MQIPT version

To improve security, DES40_CBC ciphers are no longer enabled by default in the JRE update to, and any later JRE updates. This affects the following CipherSuites in MQIPT:

If you are aware of the potential hazards but still have a need to use one of these CipherSuites, you can add support for it by removing the corresponding algorithm from the list of disabled algorithms (jdk.tls.disabledAlgorithms) in the file, found in mqipt_path/java/jre/lib/security/, where mqipt_path is the location where MQIPT is installed.

Owner: Gwydion Tudur, IBM MQ Development, IBM United Kingdom Laboratories
Category: 3
Released: 11Jul00
Last Updated: 25Nov20
Current SupportPac Version:
Latest MQIPT fix list can be found here.
»Please note that the version number shown in the right-hand pane is the version of the MQ or WBI product that this SupportPac applies to. The date is the last web page refresh.
To view the complete portfolio of WebSphere MQ SupportPacs please visit the WebSphere MQ SupportPacs homepage.


Please see full hardware and software prerequisites for the MQIPT SupportPac in the ms81.txt file below.

From Version 9.1.4, MQIPT is available on the Linux, AIX and Windows platforms that IBM MQ supports, as described in System Requirements for IBM MQ V9.1.

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Installation Instructions

For installation instructions for MQIPT Version 9.2.x, see Installing and uninstalling IBM MQ Internet Pass-Thru in IBM Documentation for IBM MQ 9.2.

For installation instructions for MQIPT Supportpac V2.1, see Installing, uninstalling, and migrating MQIPT in IBM Documentation for IBM MQ 9.0.

To install the MQIPT V2.1 SupportPac on a Windows platform, follow these steps:
• Download file to a temporary directory (for example C:\temp).
• Create a new directory where you want MQIPT to be installed (for example C:\MQIPT).
• Move the downloaded to the new MQIPT installation directory.
• Uncompress using InfoZip Unzip. If you use other unzip programs, ensure you specify the option to re-create stored directories.
• It is recommended to make the MQIPT installation directory read-only by revoking write permissions from all users.
• To create MQIPT icons on the Start menu, run the following command from an Administrator command prompt:
C:\MQIPT\bin\mqiptIcons -install installation_name

To install the MQIPT V2.1 SupportPac on a UNIX or Linux platform, you must log on as the root user. Then perform the following steps:
• Download the tar file to a temporary directory (for example /tmp).
• Create a new directory where you want MQIPT to be installed (for example /opt/mqipt).
• Move the downloaded tar file to the new MQIPT installation directory, for example:
mv /tmp/ms81_x86_linux_2.tar /opt/mqipt
• Unpack the tar file, for example:
cd /opt/mqipt
tar xf ms81_x86_linux_2.tar
• To increase security, set the file permissions for your installed files so that they are read-only. For example:
chmod -R /opt/mqipt/* a-w
Note: failure to run the tar command as root is likely to result in "permission denied" errors.

For more information about installation and migration from the previous release, refer to the Readme file that is provided with MQIPT and documentation.

JRE update installation instructions:
Periodically IBM releases an updated JRE for use with MQIPT in order to provide the latest Java security fixes. Updated JREs for the MQIPT V2.1 SupportPac can be downloaded via the Download package link, in the Security Update JRE for MS81 section. To install a new JRE for MQIPT, follow the instructions here. The MQIPT version number is not affected by installing a new MQIPT JRE. To determine which MQIPT JRE is currently installed, use the mqiptVersion -v command.

Download Package

Note that the installation method has changed from the previous release. Refer to the Installation Instructions section for more information. Please note that you should run as the root user in order to install MQIPT on UNIX and Linux platforms.

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Technical Support

Category 3 WebSphere MQ (MQSeries) SupportPacs are supplied under the standard terms and conditions provided by the International Program License Agreement (IPLA) and thus carry program defect service.

Please read the licence files that accompany the SupportPac to ensure you understand the conditions under which the SupportPac is provided.

If you encounter what you believe to be a defect with the SupportPac you may request Program Services by reporting the problem via the same defect reporting channel you employ for the WebSphere MQ or MQSeries server product(s) on which you are using the SupportPac.

This End of Support for this MS81 SupportPac is 30th September 2020.

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Document Information

Modified date:
02 June 2021