This application can stop or start the cameras of the application Surveillance Station Synology as you would with an security alarm.
Completely secure, you must use an account of your Synology Server (local or LDAP) to authenticate and also enter a numerical code (optional) to execute commands start or stop.
You find all the informations, installation procedures and pages on the site http://www.need-soft.com/en/synology-en/nscam-en.html