Disable simultaneous logins from different sessions - Liferay
If you want to prevent simultaneous logins from different session add the following properties to portal-ext.properties file. ## ## Live Users ## # # Set this to true to enable tracking via Live Users. # live.users.enabled=true # # Set the following to true if users are allowed to have simultaneous logins # from different sessions. This property is not used unless the property # "live.users.enabled" is set to true. # auth.simultaneous.logins=false