The simplest method of remotely accessing the Metasys system is to use an existing VPN infrastructure. If an existing VPN infrastructure is present on the site already, the risks and security concerns have been established and addressed. Using a VPN, the Metasys system features are the same as if remote users are on the company intranet. The one restriction is that the Metasys system does not support Secure Socket Layer (SSL) VPN.
Figure 1. Metasys system Internet communication by using VPN