Manuels d'utilisation pour Emerson v3.1.0

Table des matières

• 1 Introduction

  5
• 1.1 Purpose

  5
• 1.2 Organization

  5
• 1.3 Relevant documentation

  5
• 1.3.1 Background reading

  5
• 1.3.2 DeltaV documentation

  6
• 1.3.3 Microsoft documentation

  6
• 1.3.4 3rd party product documentation

  6
• 1.4 Security and DeltaV system projects

  7
• 1.5 Security Collaboration between IT and Operations Departments

  8
• 1.6 Submitting Material for This Manual

  10
• 1.7 Glossary

  10
• 2 Security basics

  12
• 2.1 Threats to control systems

  12
• 2.2 Assets and compromises

  12
• 2.3 Vulnerabilities

  13
• 2.4 Performing a risk assessment

  13
• 2.4.1 Summary security checklist

  14
• 2.4.2 Defense-in-depth

  15
• 2.4.3 Security Hardening

  15
• 2.5 Protecting assets from threats

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• 2.5.1 Overview

  15
• 2.5.2 Principal safeguards

  16
• 2.5.2.1 Security policies and procedures

  16
• 2.5.2.2 Physical security

  18
• 2.5.2.3 Cyber security perimeters

  18
• 2.5.2.4 Encryption and digital signatures

  19
• 2.5.2.5 Role-based access controls

  20
• 2.6 Implementing DeltaV security

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• 3 DeltaV security

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• 3.1 Overview

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• 3.2 DeltaV architecture

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• 3.2.1 External access to DeltaV systems

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• 3.2.1.1 DeltaV 2.5 network

  22
• 3.2.1.1.1 Description

  22
• 3.2.1.1.2 DeltaV 2.5 network connectivity

  25
• 3.2.1.1.3 Using wireless in the DeltaV 2.5 network

  26
• 3.2.1.1.3.1 Wireless Ethernet device security

  28
• 3.2.1.1.4 The DeltaV 2.5 network perimeter security device

  28
• 3.2.1.2 The DeltaV remote (RAS) network

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• 3.2.1.3 The Process DMZ

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• 3.2.1.4 Remote access applications

  32
• 3.2.1.4.1 Overview

  32
• 3.2.1.4.2 Microsoft Remote Desktop

  33
• 3.2.1.4.3 DeltaV remotely accessible applications

  34
• 3.2.1.4.4 DeltaV Firewall Configuration Information

  35
• 3.2.2 DeltaV control system networks

  39
• 3.2.2.1 DeltaV area control network (ACN)

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• 3.2.2.1.1 Description

  39
• 3.2.2.1.2 Emerson Process Management Smart Switches

  40
• 3.2.2.1.2.1 Capabilities and operation

  40
• 3.2.2.1.2.2 Management

  41
• 3.2.2.1.3 DeltaV Controller Firewall

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• 3.2.2.1.3.1 Capabilities and operation

  41
• 3.2.2.1.3.2 Management

  42
• 3.2.2.1.4 Connecting non-DeltaV computers to the ACN

  42
• 3.2.2.1.5 Extending the ACN using wireless Ethernet bridges

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• 3.2.2.2 SIS networks

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• 3.2.2.2.1 Description

  43
• 3.2.2.2.2 DeltaV SIS Intrusion Protection Device (SIS IPD)

  44
• 3.2.2.2.2.1 Capabilities and operation

  44
• 3.2.2.2.2.2 Management

  45
• 3.2.2.2.3 SIS Engineering Workstations

  45
• 3.2.2.3 WirelessHART segments

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• 3.2.2.3.1 Description

  45
• 3.2.2.3.2 Separation of maintenance workstations and wireless devices

  47
• 3.2.2.3.3 WirelessHART device security

  47
• 3.2.3 DeltaV Zones

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• 3.2.4 DeltaV workstations

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• 3.2.4.1 Physical security

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• 3.2.4.2 Workstation security templates

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• 3.2.4.3 Workstation locking

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• 3.2.4.4 File system

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• 3.2.4.5 Removable devices

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• 3.2.4.6 Anti-Virus software

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• 3.2.4.7 Workstation applications and services

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• 3.2.4.7.1 Disabled services

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• 3.2.4.7.2 Email

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• 3.2.4.7.3 Internet Explorer

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• 3.2.4.8 Workstation Data, Alarms, and Events

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• 3.2.4.8.1 Data access

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• 3.2.4.8.1.1 Control parameters

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• 3.2.4.8.1.2 Data historians

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• 3.2.4.9 Portable device security

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• 3.2.5 Controller security

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• 3.2.5.1 Physical security

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• 3.2.5.2 Connection to the ACN

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• 3.2.5.3 DeltaV Controller I/O protection

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• 3.3 DeltaV functional security

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• 3.3.1 User security

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• 3.3.1.1 Account management

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• 3.3.1.1.1 Centralized management of accounts

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• 3.3.1.1.2 Account creation and maintenance

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• 3.3.1.1.3 Account expiration

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• 3.3.1.1.4 Removal of temporary accounts

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• 3.3.1.1.5 Removal of unused accounts

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• 3.3.1.2 Passwords

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• 3.3.1.2.1 Composition

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• 3.3.1.2.2 Default passwords

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• 3.3.1.2.3 Expiration period

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• 3.3.1.2.4 Expiration prompt

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• 3.3.1.2.5 Reuse

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• 3.3.1.3 Shared accounts

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• 3.3.1.4 Installation-generated user accounts

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• 3.3.1.5 Account activity logging

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• 3.3.1.6 Logging into the DeltaV system

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• 3.3.2 Security event handling

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• 3.3.2.1 Event logging and reporting

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• 3.3.2.1.1 General security event handling

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• 3.3.2.1.2 User activities

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• 3.3.2.1.3 Log of failed login attempts

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• 3.3.2.2 Event monitoring

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• 3.4 Security certifications

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• 3.4.1 Vendor products

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• 4 Patching

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• 4.1 General patching policy

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• 4.1.1 Operational impacts

  66
• 4.1.2 Patch list management

  68
• 4.1.3 Patching timeliness

  69
• 4.1.4 Policies and procedures

  70
• 4.2 Microsoft Windows updates

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• 4.2.1 Introduction

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• 4.2.2 Windows non-security updates

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• 4.2.3 Security updates

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• 4.3 DeltaV workstation hotfixes

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• 4.4 DeltaV Controller and I/O hotfixes

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• 5 Backups and disaster recovery

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• 5.1 Overvie

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• 5.2 Backup/Recovery capability

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• 5.3 Backup strategy

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• 6 Cyber security services

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• 6.1 Standards, policies and procedures

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• 6.2 Confidentiality agreements

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• 6.3 Standards committees

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• 6.4 Security contact

  76
• 6.5 System change procedures

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• 6.6 Incident Response Policies and Procedures

  78
• 6.7 System hardening

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• 6.8 Conducting security risk assessments

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• 6.9 Use of troubleshooting tools

  78