Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 460: Multiple talkers and multiple listeners - Ethernet interconnection - Safety and security

IEC 61162-460:2018 is also available as IEC 61162-460:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61162-460:2018 is an add-on to IEC 61162-450 where higher safety and security standards are needed, for example due to higher exposure to external threats or to improve network integrity. This document provides requirements and test methods for equipment to be used in an IEC 61162-460 compliant network as well as requirements for the network itself and requirements for interconnection from the network to other networks. This document also contains requirements for a redundant IEC 61162-460 compliant network.
This document does not introduce new application level protocol requirements to those that are defined in IEC 61162-450.
This second edition of IEC 61162-460 cancels and replaces the first edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) 460-Switches and 460-Forwarders are required to implement IGMP snooping;
b) connection between secure and non-secure areas requires a 460-Forwarder as an isolation element;
c) SFI collision detection added as function of network monitoring;
d) 460-Gateway and 460-Wireless gateway are no longer required to report to the network monitoring;
e) all alerts from network monitoring have standardized alert identifiers.

Matériels et systèmes de navigation et de radiocommunication maritimes - Interfaces numériques - Partie 460: Émetteurs multiples et récepteurs multiples - Interconnexion Ethernet - Sûreté et sécurité

IEC 61162-460:2018 est disponible sous forme de IEC 61162-460:2018 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 61162-460:2018 vient s'ajouter à la norme IEC 61162-450 lorsque des normes plus rigoureuses en matière de sûreté et de sécurité sont nécessaires, par exemple en raison d'une exposition plus importante aux menaces externes ou afin de renforcer l'intégrité du réseau. Le présent document spécifie des exigences et des méthodes d'essai pour les matériels à utiliser dans un réseau conforme à l'IEC 61162-460 ainsi que des exigences relatives au réseau proprement dit et des exigences relatives à l'interconnexion du réseau avec d'autres réseaux. Le présent document comprend également des exigences s'appliquant aux réseaux redondants conformes à l'IEC 61162-460. Le présent document n'introduit pas de nouvelles exigences relatives aux protocoles des niveaux d'application par rapport à celles définies dans l'IEC 61162-450. Cette deuxième édition de l'IEC 61162-460 annule et remplace la première édition parue en 2015. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) les commutateurs-460 et les redirecteurs-460 sont exigés pour la mise en œuvre de la surveillance du trafic des protocoles Internet de gestion de groupe (IGMP – Internet group management protocol);
b) le raccordement entre des zones protégées et des zones non protégées exige un redirecteur-460 en tant qu'élément isolant;
c) ajout de la détection de collision par ID de fonction du système (SFI – system function ID) comme fonction de surveillance du réseau;
d) la consignation de la passerelle-460 et de la passerelle sans fil-460 à la surveillance du réseau n'est plus exigée;
e) toutes les alertes issues de la surveillance du réseau ont des identificateurs d'alerte normalisés.

General Information

Status
Published
Publication Date
19-Jan-2020
Current Stage
Ref Project

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IEC 61162-460:2018 RLV - Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 460: Multiple talkers and multiple listeners - Ethernet interconnection - Safety and security Released:5/7/2018 Isbn:9782832256862
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IEC 61162-460:2018 - Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 460: Multiple talkers and multiple listeners - Ethernet interconnection - Safety and security
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IEC 61162-460:2018+AMD1:2020 CSV - Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 460: Multiple talkers and multiple listeners - Ethernet interconnection - Safety and security Released:1/20/2020 Isbn:9782832277706
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IEC 61162-460 ®
Edition 2.0 2018-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Digital interfaces –
Part 460: Multiple talkers and multiple listeners – Ethernet interconnection –
Safety and security
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
he technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
T
latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC 61162-460 ®
Edition 2.0 2018-05
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Digital interfaces –
Part 460: Multiple talkers and multiple listeners – Ethernet interconnection –
Safety and security
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 47.020.70 ISBN 978-2-8322-5686-2

– 2 – IEC 61162-460:2018 RLV © IEC 2018

CONTENTS
FOREWORD . 6

1 Scope . 8

2 Normative references . 8

3 Terms and definitions . 9

4 High-level requirements . 15

4.1 Overview. 15

4.2 Description . 15
4.3 General requirements . 16
4.3.1 Equipment and system requirements . 16
4.3.2 Physical composition requirements . 16
4.3.3 Logical composition requirements . 17
4.4 Physical component requirements . 17
4.4.1 450-Node. 17
4.4.2 460-Node. 17
4.4.3 460-Switch . 18
4.4.4 460-Forwarder . 18
4.4.5 460-Gateway and 460-Wireless gateway . 18
4.5 Logical component requirements . 18
4.5.1 Network monitoring function . 18
4.5.2 System management function . 19
4.6 System documentation requirements . 19
4.7 Secure area requirements . 19
5 Network traffic management requirements . 19
5.1 460-Node requirements. 19
5.2 460-Switch requirements. 20
5.2.1 Resource allocation . 20
5.2.2 Loop prevention . 20
5.3 460-Forwarder requirements . 21
5.3.1 Traffic separation . 21
5.3.2 Resource allocation . 21
5.3.3 Traffic prioritization . 21
5.4 System design requirements . 22

5.4.1 Documentation . 22
5.4.2 Traffic . 23
5.4.3 Connections between secure and non-secure areas . 23
6 Security requirements . 23
6.1 Security scenarios . 23
6.1.1 Threat scenarios . 23
6.1.2 Internal threats . 23
6.1.3 External threats . 23
6.2 Internal security requirements . 24
6.2.1 General . 24
6.2.2 Denial of service protection . 24
6.2.3 REDS security . 24
6.2.4 Access control . 25
6.3 External security requirements . 26

6.3.1 Overview . 26

6.3.2 Firewalls . 26

6.3.3 Direct communication . 27

Communication security .

6.3.4 460-Node. 27

6.3.5 460-Gateway . 28

6.3.6 460-Wireless gateway. 29

6.4 Additional security issues . 29

7 Redundancy requirements . 29

7.1 General requirements . 29
7.1.1 General . 30
7.1.2 Interface redundancy . 30
7.1.3 Device redundancy . 31
7.2 460-Node requirements. 31
7.3 460-Switch requirements. 31
7.4 460-Forwarder requirements . 31
7.5 460-Gateway and 460-Wireless gateway requirements . 31
7.6 Network monitoring function requirements . 31
7.7 System design requirements . 31
8 Network monitoring requirements . 32
8.1 Network status monitoring . 32
8.1.1 460-Network . 32
8.1.2 460-Node. 32
8.1.3 460-Switch . 32
8.1.4 460-Forwarder . 32
460-Gateway and 460-Wireless gateway .
8.2 Network monitoring function . 33
8.2.1 General . 33
8.2.2 Network load monitoring function . 34
8.2.3 Redundancy monitoring function . 34
8.2.4 Network topology monitoring function . 35
8.2.5 Syslog recording function . 36
8.2.6 Redundancy of network monitoring function . 36
8.2.7 Alert management . 37
9 Controlled network requirements . 38

10 Methods of testing and required test results . 38
10.1 Subject of tests . 38
10.2 Test site . 38
10.3 General requirements . 39
10.4 450-Node . 39
10.5 460-Node . 40
10.5.1 Network traffic management . 40
10.5.2 Security . 40
10.5.3 Redundancy . 42
10.5.4 Monitoring . 42
10.6 460-Switch . 43
10.6.1 Resource allocation .
...


IEC 61162-460 ®
Edition 2.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipmentand systems – Digital
interfaces –
Part 460: Multiple talkers and multiple listeners – Ethernet interconnection –
Safety and security
Matériels et systèmes de navigation et de radiocommunication maritimes –
Interfaces numériques –
Partie 460: Émetteurs multiples et récepteurs multiples – Interconnexion
Ethernet – Sûreté et sécurité
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
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Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
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IEC 61162-460 ®
Edition 2.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipmentand systems – Digital

interfaces –
Part 460: Multiple talkers and multiple listeners – Ethernet interconnection –

Safety and security
Matériels et systèmes de navigation et de radiocommunication maritimes –

Interfaces numériques –
Partie 460: Émetteurs multiples et récepteurs multiples – Interconnexion

Ethernet – Sûreté et sécurité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 47.020.70 ISBN 978-2-8322-5522-3

– 2 – IEC 61162-460:2018 © IEC 2018
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 High-level requirements . 15
4.1 Overview. 15
4.2 Description . 15
4.3 General requirements . 16
4.3.1 Equipment and system requirements . 16
4.3.2 Physical composition requirements . 16
4.3.3 Logical composition requirements . 17
4.4 Physical component requirements . 17
4.4.1 450-Node. 17
4.4.2 460-Node. 17
4.4.3 460-Switch . 18
4.4.4 460-Forwarder . 18
4.4.5 460-Gateway and 460-Wireless gateway . 18
4.5 Logical component requirements . 18
4.5.1 Network monitoring function . 18
4.5.2 System management function . 18
4.6 System documentation requirements . 19
4.7 Secure area requirements . 19
5 Network traffic management requirements . 19
5.1 460-Node requirements. 19
5.2 460-Switch requirements. 20
5.2.1 Resource allocation . 20
5.2.2 Loop prevention . 20
5.3 460-Forwarder requirements . 20
5.3.1 Traffic separation . 20
5.3.2 Resource allocation . 21
5.3.3 Traffic prioritization . 21
5.4 System design requirements . 22
5.4.1 Documentation . 22
5.4.2 Traffic . 22
5.4.3 Connections between secure and non-secure areas . 22
6 Security requirements . 23
6.1 Security scenarios . 23
6.1.1 Threat scenarios . 23
6.1.2 Internal threats . 23
6.1.3 External threats . 23
6.2 Internal security requirements . 24
6.2.1 General . 24
6.2.2 Denial of service protection . 24
6.2.3 REDS security . 24
6.2.4 Access control . 25
6.3 External security requirements . 26

6.3.1 Overview . 26
6.3.2 Firewalls . 26
6.3.3 Direct communication . 26
6.3.4 460-Node. 27
6.3.5 460-Gateway . 27
6.3.6 460-Wireless gateway. 28
6.4 Additional security issues . 29
7 Redundancy requirements . 29
7.1 General requirements . 29
7.1.1 General . 29
7.1.2 Interface redundancy . 30
7.1.3 Device redundancy . 30
7.2 460-Node requirements. 30
7.3 460-Switch requirements. 31
7.4 460-Forwarder requirements . 31
7.5 460-Gateway and 460-Wireless gateway requirements . 31
7.6 Network monitoring function requirements . 31
7.7 System design requirements . 31
8 Network monitoring requirements .
...


IEC 61162-460 ®
Edition 2.1 2020-01
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipmentand systems – Digital
interfaces –
Part 460: Multiple talkers and multiple listeners – Ethernet interconnection –
Safety and security
Matériels et systèmes de navigation et de radiocommunication maritimes –
Interfaces numériques –
Partie 460: Émetteurs multiples et récepteurs multiples – Interconnexion
Ethernet – Sûreté et sécurité
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and definitions clause of
IEC publications issued between 2002 and 2015. Some
IEC Customer Service Centre - webstore.iec.ch/csc entries have been collected from earlier publications of IEC
If you wish to give us your feedback on this publication or TC 37, 77, 86 and CISPR.

need further assistance, please contact the Customer Service

Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - Electropedia - www.electropedia.org
webstore.iec.ch/advsearchform Le premier dictionnaire d'électrotechnologie en ligne au

La recherche avancée permet de trouver des publications IEC monde, avec plus de 22 000 articles terminologiques en
en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans
comité d’études,…). Elle donne aussi des informations sur les 16 langues additionnelles. Egalement appelé Vocabulaire
projets et les publications remplacées ou retirées. Electrotechnique International (IEV) en ligne.

IEC Just Published - webstore.iec.ch/justpublished Glossaire IEC - std.iec.ch/glossary
Restez informé sur les nouvelles publications IEC. Just 67 000 entrées terminologiques électrotechniques, en anglais
Published détaille les nouvelles publications parues. et en français, extraites des articles Termes et définitions des
Disponible en ligne et une fois par mois par email. publications IEC parues entre 2002 et 2015. Plus certaines
entrées antérieures extraites des publications des CE 37, 77,
Service Clients - webstore.iec.ch/csc 86 et CISPR de l'IEC.

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
IEC 61162-460 ®
Edition 2.1 2020-01
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipmentand systems – Digital

interfaces –
Part 460: Multiple talkers and multiple listeners – Ethernet interconnection –

Safety and security
Matériels et systèmes de navigation et de radiocommunication maritimes –

Interfaces numériques –
Partie 460: Émetteurs multiples et récepteurs multiples – Interconnexion

Ethernet – Sûreté et sécurité
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 47.020.70 ISBN 978-2-8322-7770-6

IEC 61162-460 ®
Edition 2.1 2020-01
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Maritime navigation and radiocommunication equipmentand systems – Digital
interfaces –
Part 460: Multiple talkers and multiple listeners – Ethernet interconnection –
Safety and security
Matériels et systèmes de navigation et de radiocommunication maritimes –
Interfaces numériques –
Partie 460: Émetteurs multiples et récepteurs multiples – Interconnexion
Ethernet – Sûreté et sécurité
– 2 – IEC 61162-460:2018+AMD1:2020 CSV

© IEC 2020
CONTENTS
FOREWORD . 6

Introduction to the Amendment . 8

1 Scope . 9

2 Normative references . 9

3 Terms and definitions . 10

4 High-level requirements . 16

4.1 Overview. 16
4.2 Description . 16
4.3 General requirements . 17
4.3.1 Equipment and system requirements . 17
4.3.2 Physical composition requirements . 17
4.3.3 Logical composition requirements . 18
4.4 Physical component requirements . 18
4.4.1 450-Node. 18
4.4.2 460-Node. 18
4.4.3 460-Switch . 19
4.4.4 460-Forwarder . 19
4.4.5 460-Gateway and 460-Wireless gateway . 19
4.5 Logical component requirements . 19
4.5.1 Network monitoring function . 19
4.5.2 System management function . 19
4.6 System documentation requirements . 20
4.7 Secure area requirements . 20
5 Network traffic management requirements . 20
5.1 460-Node requirements. 20
5.2 460-Switch requirements. 21
5.2.1 Resource allocation . 21
5.2.2 Loop prevention . 21
5.3 460-Forwarder requirements . 21
5.3.1 Traffic separation . 21
5.3.2 Resource allocation . 22
5.3.3 Traffic prioritization . 22

5.4 System design requirements . 23
5.4.1 Documentation . 23
5.4.2 Traffic . 23
5.4.3 Connections between secure and non-secure areas . 23
6 Security requirements . 24
6.1 Security scenarios . 24
6.1.1 Threat scenarios . 24
6.1.2 Internal threats . 24
6.1.3 External threats . 24
6.2 Internal security requirements . 25
6.2.1 General . 25
6.2.2 Denial of service protection . 25
6.2.3 REDS security . 25
6.2.4 Access control . 26

© IEC 2020
6.3 External security requirements . 27

6.3.1 Overview . 27

6.3.2 Firewalls . 27

6.3.3 Direct communication . 27

6.3.4 460-Node. 28

6.3.5 460-Gateway . 29

6.3.6 460-Wireless gateway. 30

6.4 Additional security issues . 30

7 Redundancy requirements . 30

7.1 General requirements . 30
7.1.1 General . 30
7.1.2 Interface redundancy . 31
7.1.3 Device redundancy . 31
7.2 460-Node requirements. 32
7.3 460-Switch requirements. 32
7.4 460-Forwarder requirements .
...

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