The SearchBlox Server uses port 8080 by default. This can be changed in the http.ini file within the following path:
/opt/searchblox/start.d/http.ini for Linux
C:\SearchBlox Server\start.d\http.ini for Windows.
Update the following line to set the required port number:
Remember to stop the SearchBlox Server before you make the port change. Once you restart the SearchBlox Server, the required port will take effect.