You can use security exit programs to verify that the partner at the other end of a connection is genuine.
When you start the Message Brokers Toolkit a security exit to monitor the connection to the Configuration Manager is not started by default. If you want to protect access to the Configuration Manager from client programs, you can use the WebSphere MQ security exit facility.
For an overview of security exits and details in their implementation, refer to the topic "Channel security exit programs" in "Channel-exit programs" in WebSphere MQ Intercommunication. If you have v6 then locate "Channel-exit programs" within the Intercommunication section of the WebSphere MQ Version 6 information center online.