The Problem Legacy
OPC connectivity relies heavily upon Microsoft technologies such as DCOM. While it provides effective application integration, DCOM also represents a potential security risk due to the requirement for extensive TCP port usage.
Yokogawa has recognized this issue and has developed a secure access mechanism based upon VPN technology that enables the normal operation of legacy OPC connections without the security issues it introduces. Yokogawa customers who wish to provide effective and secure connections to the Process Control Domain can now do so utilizing Yokogawa’s VPN Software Manager ‘Exaquantum/VPN’.
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