Remote support/remote health checks involve Foursys connecting to the Webex website. From here we email an invitation to a customer to join a remote session (ie the customer connects to the Webex website). When the customer selects the link from the email a small piece of Java (software) is installed on their PC. This software allows us (with the customers permission) to then take control of their selected PC. This does not normally involve any modification to a firewall as the customers PC and the the Foursys PC communicate through the Webex website using HTTP. The software is secure and the customers permission is required at various steps to set it up until connection is complete.