SQL Server Service Broker by default uses port TCP 4022. For security policy reasons I prefer to use a different port number.

Before deciding on a port number check it won’t conflict with another application port usage. Use netstat to view all ports currently open . Read How to Configure static ports for SQL Server  for more details

Once you’ve decided on a port number – use these scripts to create the service broker endpoint and assign the listener port

--create ENDPOINT
USE master;
GO
CREATE ENDPOINT SqlBrokerEndpoint
STATE = STARTED
AS TCP ( LISTENER_PORT = 45000)
FOR SERVICE_BROKER ( AUTHENTICATION = WINDOWS ) ;
GO 

--To verify the ENDPOINT is created use: 

SELECT name, protocol_desc, port, state_desc FROM sys.tcp_endpoints WHERE type_desc = 'SERVICE_BROKER'

--To DROP the SQL Server Service Endpoint

USE master ;
GO
DROP ENDPOINT SqlBrokerEndpoint
GO 


--To ALTER the ENDPOINT 

ALTER ENDPOINT SqlBrokerEndpoint
AS TCP (LISTENER_PORT = 46000);

 Read more

Troubleshooting SQL Server Service Broker

netstat monitoring and tuning performance - SQL Server DBA

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