Do you need to collect OPC data from a closed system where internet access is protected by a DMZ? Only the Cogent DataHub allows you to network data across a DMZ, without exposing any inbound security risks in either IT or OT.
A proxy server is a server that acts as an intermediary for requests from clients seeking resources from other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource available from a different server and the proxy server evaluates the request as a way to simplify and control its complexity. Proxies were invented to add structure and encapsulation to distributed systems. Today, most proxies are web proxies, facilitating access to content on the World Wide Web and providing anonymity.
The Cogent DataHub on the other hand is purpose built, when configured as a proxy. By running an instance of the Cogent DataHub inside your DMZ, the DataHub acts as an OPC data Proxy. Since both the IT and OT DataHub instances are establishing the connection to the DMZ, neither side needs to open any inbound firewall ports. Yet, your OPC data can freely pass bidirectionally.
What it does
Outbound only architecture keeps inbound firewall ports closed
Connects OPC DA / UA servers and clients, Modbus, ODBC, DDE over a network.
Eliminates DCOM problems.
More robust and secure than DCOM.
Connects to SkkyHub service and embedded devices.
Never blocks OPC or drops the local OPC connection.
Quickly reconnects after network failures.
Aggregates data from multiple OPC servers.
Works through proxy servers.
Multiple connections can share one tunnel to reduce network loads.
OPC DA Support – connect to OPC DA servers and clients.
Other add-on features include DDE/Excel Support for connecting to Excel spreadsheets and other DDE servers, Email/SMS Notification to receive an email or SMS message based on data changes, Data Historian to store and retrieve large volumes of data at high speeds, Data Redundancy to do hot standby switching between identical data sources, and Camera to stream live video or images of your system.
“For us, this OPC tunnel is very good, because we only need to open one port, and we are secure from DCOM break-ins. We are considering installing this same solution in our top plants.”
Michele Mannucci, Project Engineer, ABB Energy Automation, Italy