The default port for License Manager is 10091. So, when SolutionManager is installed with default configurations, this is the port which will be allocated for License Manager. You could check the port for License Manager in the LMConfigurationParameters.properties file which is located at: <SolutionManager_Home>/conf/license-manager
The "server.port" parameter contains the port number for the license manager. If that port number is not accessible from your machine then you can change the port number here and try to start the license manager.
Hope this helps!