公开(公告)号：US11265293B2

公开(公告)日：2022-03-01

申请号：US16591167

申请日：2019-10-02

Applicant: Honeywell International Inc.

Inventor： Mohammed Rizwan ,  Prasad Samudrala ,  Jayashree Balakrishnan ,  Ramesh Babu Koniki

IPC: G06F21/00 ,  H04L29/06 ,  H04W12/088 ,  H04W88/16 ,  H04W80/02

Abstract: An apparatus and method is disclosed for the secure access to field instruments. An interface device that includes a built-in firewall, is communicatively coupled between the device manager of an industrial automation process control system and a network of field instruments. The interface device includes at least one processor configured to execute instructions that provides a firewall for the one or more field instruments by blocking one or more user selected commands from being sent to the field instruments from the device manager.