Firewall Friendly Connection
From DLS5 Wiki
Firewall Friendly Connection Type
Firewall Friendly is a new connection type that works with PowerSeries Pro control panels. This connection type was designed to allow you to easily connect over IP to panels in the field, without the need to forward ports or make other changes to the firewall setup at the site where the panel is installed. This is especially beneficial for panels installed at sites that do not have a static IP from their Internet Service Provider, since our Firewall Friendly server will act as a DNS lookup server for the site.
Firewall Friendly Pages
Firewall Friendly PC Firewall Setup Instructions