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SECURE REMOTE ACCESS TO BACNET SYSTEMS WITHOUT A BBMD

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 3. news



BridgeVPN allows users to set up and maintain secure access to a remote site
without subscription fees or the need for a cloud-based VPN server. Contemporary
Controls' EIGR-VB Gigabit IP router can be configured as a VPN server with Layer
2 bridge mode that allows passage of multicast and broadcast messages which
eliminates the need for a BACnet/IP Broadcast Management Device (BBMD).

Operating in OpenVPN® server mode, the EIGR-VB supports bridge mode where up to
10 VPN clients (Windows/Linux PCs) are bridged to the router's LAN side and
assigned an IP address from the LAN subnet. This provides the same application
experience as if the client devices were part of the EIGR-VB's LAN and allows
passage of multicast and broadcast messages through the VPN tunnel without the
need for a BACnet/IP Broadcast Management Device (BBMD).




EXAMPLE —BUILDING AUTOMATION SYSTEM USING WIRED REMOTE ACCESS

A Windows or Linux PC in your office running OpenVPN client software behind a
firewall connects to your EIGR-VB OpenVPN server over the Internet. The PC can
communicate over BridgeVPN to any IP device used in building automation systems,
such as BACnet controllers or routers, on the IP router's LAN ports. Ethernet
switches can be used to add more devices. The VPN clients (up to 10
Windows/Linux PCs in OpenVPN client mode) are bridged to the LAN side and are
provided an IP address from the LAN subnet which provides the same application
experience as if the client device were part of the LAN of the EIGR-VB. This
allows passage of multicast and broadcast messages through the VPN tunnel. The
PC can easily run BACnet client applications to discover and communicate with
BACnet devices at the remote site. Since the PC VPN interface is on the same
subnet as the EIGR-VB LAN, there is no need for a BBMD. This provides secure
access to BACnet devices over a VPN without the intricacies of setting up the
BBMD device along with the cost savings of the BBMD device.

In addition to the BridgeVPN solution, Contemporary Controls offers
a Self-HostedVPN solution which allows network savvy customers to set up and
maintain their own wired or wireless remote access for multiple clients – up to
15 wired/cellular IP routers in OpenVPN client mode and 15 OpenVPN clients on
PC/tablet/phone.

Contemporary Controls' RemoteVPN subscription service provides secure
communication and the convenience of remote access without having to maintain
the VPN server. Hosted on the Internet and maintained by Contemporary Controls,
RemoteVPN incorporates a cloud-based OpenVPN server, OpenVPN clients for
workstations and mobile devices, and OpenVPN routers installed at job sites.

To learn more, visit the BridgeVPN product page.



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