In order to gain remote access of your Honeywell L5100 Lynx Touch you need to have Honeywell Total Connect service.
The installation of an internet communicator and/or a cellular communicator is required to qualify for Total Connect Service, which gives users the ability to remotely arm or disarm their system using a computer or mobile device with an internet connection. In the case of an emergency, the service automatically sends email and text message alerts to the user. Also, users can watch live video feeds from surveillance cameras installed around their property.