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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)
Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschifffahrt -
Digitale Schnittstellen - Teil 460: Mehrere Datensender und mehrere Datenempfänger -
Ethernet-Verbund - Funktionale und Informationssicherheit (IEC 61162-460:2018)
Matériels et systèmes de navigation et de radiocommunication maritimes - Interfaces
numériques - Partie 460 : Emetteurs multiples et récepteurs multiples - Interconnexion
Ethernet - Sûreté et sécurité (IEC 61162-460:2018)
Ta slovenski standard je istoveten z: EN IEC 61162-460:2018
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
47.020.70 Navigacijska in krmilna Navigation and control
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61162-460

NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2018
ICS 47.020.70 Supersedes EN 61162-460:2015
English Version
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)
Matériels et systèmes de navigation et de Navigations- und Funkkommunikationsgeräte und -systeme
radiocommunication maritimes - Interfaces numériques - für die Seeschifffahrt - Digitale Schnittstellen -
Partie 460: Émetteurs multiples et récepteurs multiples - Teil 460: Mehrere Datensender und mehrere
Interconnexion Ethernet - Sûreté et sécurité Datenempfänger - Ethernet-Verbund - Funktionale und
(IEC 61162-460:2018) Informationssicherheit
(IEC 61162-460:2018)
This European Standard was approved by CENELEC on 2018-06-08. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61162-460:2018 E

European foreword
The text of document 80/879/FDIS, future edition 2 of IEC 61162-460, prepared by
IEC/TC 80 "Maritime navigation and radiocommunication equipment and systems" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61162-460:2018.

The following dates are fixed:
(dop) 2019-03-08
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-06-08
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61162-460:2015.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 61162-460:2018 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60812 NOTE Harmonized as EN 60812.
IEC 61162 Series NOTE Harmonized as EN 61162 Series.
IEC 61162-1 NOTE Harmonized as EN 61162-1.
IEC 61162-2 NOTE Harmonized as EN 61162-2.
IEC 62388 NOTE Harmonized as EN 62388.
IEC 62439 Series NOTE Harmonized as EN 62439 Series.
IEC 62439-1 NOTE Harmonized as EN 62439-1.
IEC 62439-2 NOTE Harmonized as EN 62439-2.
IEC 62439-3 NOTE Harmonized as EN 62439-3.
IEC 62439-4 NOTE Harmonized as EN 62439-4.
IEC 62439-5 NOTE Harmonized as EN 62439-5.
IEC 62439-6 NOTE Harmonized as EN 62439-6.
IEC 62940 NOTE Harmonized as EN 62940.
ISO 9241-12 NOTE Harmonized as EN ISO 9241-12 .

Superseded by EN ISO 9241-112 (ISO 9241-112) and EN ISO 9241-125 (ISO 9241-125).
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year

IEC 60945 -  Maritime navigation and EN 60945 -
radiocommunication equipment and
systems - General requirements - Methods
of testing and required test results
Maritime navigation and
IEC 61162-450 2018 EN IEC 61162-450 2018
radiocommunication equipment and
systems - Digital interfaces -
Part 450: Multiple talkers and multiple
listeners - Ethernet interconnection
IEC 61924-2 2012 Maritime navigation and EN 61924-2 2013
radiocommunication equipment and
systems - Integrated navigation systems -
Part 2: Modular structure for INS -
Operational and performance
requirements, methods of testing and
required test results
IEC 62288 2014 Maritime navigation and EN 62288 2014
radiocommunication equipment and
systems - Presentation of navigation-
related information on shipborne
navigational displays - General
requirements, methods of testing and
required test results
IEEE 802.1D 2004 IEEE Standard for local and metropolitan - -
area networks - Media Access Control
(MAC) Bridges
IEEE 802.1Q -  IEEE Standard for Local and metropolitan - -
area networks - Media Access Control
(MAC) Bridges and Virtual Bridges
IETF RFC 792 1981 Internet Control Message Protocol (ICMP) - -
IETF RFC 1112 1989 Host Extensions for IP Multicasting - -
(SNMP)
IETF RFC 1157 1990 Simple Network Management Protocol - -
(SNMP)
Remote Network Monitoring Management
IETF RFC 2021 1997 - -
Information Base
Publication Year Title EN/HD Year

IETF RFC 2236 1997 Internet Group Management Protocol, - -
Version 2
IETF RFC 2819 2000 Remote Network Monitoring Management - -
Information Base
IETF RFC 3411 2002 An Architecture for Describing Simple - -
Network Management Protocol (SNMP)
Management Frameworks
IETF RFC 3577 2003 Introduction to the RMON family of MIB - -
modules
IETF RFC 4604 2006 Using Internet Group Management - -
Protocol Version 3 (IGMPv3) and Multicast
Listener Discovery Protocol Version 2
(MLDv2) for Source-Specific Multicast
IETF RFC 5424 2009 The Syslog Protocol - -

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

IEC 61162-460:2018 © IEC 2018 – 3 –
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 . 31
8.1 Network status monitoring . 31
8.1.1 460-Network . 31
8.1.2 460-Node. 31
8.1.3 460-Switch . 32
8.1.4 460-Forwarder . 32
8.2 Network monitoring function . 32
8.2.1 General . 32
8.2.2 Network load monitoring function . 33
8.2.3 Redundancy monitoring function . 34
8.2.4 Network topology monitoring function . 34
8.2.5 Syslog recording function . 35
8.2.6 Redundancy of network monitoring function . 36
8.2.7 Alert management . 36
9 Controlled network requirements . 37
10 Methods of testing and required test results . 38
10.1 Subject of tests . 38
10.2 Test site . 38
10.3 General requirements . 38
10.4 450-Node . 39
10.5 460-Node . 39
10.5.1 Network traffic management . 39
10.5.2 Security . 40
10.5.3 Redundancy . 41
10.5.4 Monitoring . 42
10.6 460-Switch . 42
10.6.1 Resource allocation . 42
10.6.2 Loop prevention . 42
10.6.3 Security . 43
10.6.4 Monitoring . 44

– 4 – IEC 61162-460:2018 © IEC 2018
10.7 460-Forwarder . 44
10.7.1 Traffic separation . 44
10.7.2 Resource allocation . 45
10.7.3 Traffic prioritisation . 45
10.7.4 Security . 46
10.7.5 Monitoring . 47
10.8 460-Gateway . 47
10.8.1 Denial of service behaviour. 47
10.8.2 Access control to configuration setup. 47
10.8.3 Communication security . 47
10.8.4 Firewall . 48
10.8.5 Application server . 49
10.8.6 Interoperable access to file storage of DMZ . 49
10.8.7 Additional security . 49
10.9 460-Wireless gateway . 49
10.9.1 General . 49
10.9.2 Security . 49
10.10 Controlled network . 50
10.11 Network monitoring function . 50
10.11.1 General . 50
10.11.2 Network load monitoring function . 51
10.11.3 Redundancy monitoring function . 51
10.11.4 Network topology monitoring function . 51
10.11.5 Syslog recording function . 52
10.11.6 Alert management . 52
10.12 System level . 53
10.12.1 General . 53
10.12.2 System management function . 54
10.12.3 System design . 54
10.12.4 Network monitoring function . 56
10.12.5 Network load monitoring function . 56
10.12.6 Redundancy monitoring function . 56
10.12.7 Network topology monitoring function . 56
Annex A (informative) Communication scenarios between an IEC 61162-460 network
and uncontrolled networks . 57
A.1 General . 57
A.2 Routine off-ship . 57
A.3 Routine on-ship. 58
A.4 460-Gateway usage for direct connection with equipment . 58
Annex B (informative) Summary of redundancy protocols in IEC 62439 (all parts) . 59
Annex C (informative) Guidance for testing . 60
C.1 Methods of test . 60
C.2 Observation . 60
C.3 Inspection of documented evidence . 60
C.4 Measurement . 60
C.5 Analytical evaluation . 61
Annex D (informative) Some examples to use this document . 62
Annex E (normative) IEC 61162 interfaces for the network monitoring function . 66

IEC 61162-460:2018 © IEC 2018 – 5 –
Annex F (informative) Distribution of functions around 460-Network . 67
Bibliography . 69

Figure 1 – Functional overview of IEC 61162-460 requirement applications . 16
Figure 2 – 460-Network with 460-Gateway . 26
Figure 3 –Example of redundancy . 30
Figure 4 – Example of network status recording information . 33
Figure A.1 – Usage model for communication between a IEC 61162-460 network and
shore networks . 57
Figure D.1 – 460-Forwarder used between two networks . 62
Figure D.2 – 460-Forwarder used between two networks . 62
Figure D.3 – 460-Gateway used for e-Navigation services . 63
Figure D.4 – 460-Gateway used for remote maintenance . 63
Figure D.5 – 460-Forwarder used to separate an INS system based on its own
controlled network from a network of -460 devices . 64
Figure D.6 – 460-Forwarder used to separate a radar system based on its own
controlled network from a network of -460 devices . 65
Figure E.1 – Network monitoring function logical interfaces . 66

Table 1 – Traffic prioritization with CoS and DSCP . 21
Table 2 – Summary of alert of network monitoring . 36
Table B.1 – Redundancy protocols and recovery times . 59
Table E.1 – Sentences received by the network monitoring function . 66
Table E.2 – Sentences transmitted by the network monitoring function . 66
Table F.1 – Distribution of functions around 460-Network . 67
Table F.2 – Equipment standards referencing IEC 61162-460 . 68

– 6 – IEC 61162-460:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –
Part 460: Multiple talkers and multiple listeners –
Ethernet interconnection – Safety and security

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61162-460 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
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;
IEC 61162-460:2018 © IEC 2018 – 7 –
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.
The text of this International Standard is based on the following documents:
FDIS Report on voting
80/879/FDIS 80/884/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This International Standard is to be used in conjunction with IEC 61162-450:2018.
A list of all parts in the IEC 61162 series, published under the general title Maritime
navigation and radiocommunication equipment and systems – Digital interfaces, can be found
on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 8 – IEC 61162-460:2018 © IEC 2018
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –
Part 460: Multiple talkers and multiple listeners –
Ethernet interconnection – Safety and security

1 Scope
This part of IEC 61162 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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 60945, Maritime navigation and radiocommunication equipment and systems – General
requirements – Methods of testing and required test results
IEC 61162-450:2018, Maritime navigation and radiocommunication equipment and systems –
Digital interfaces – Part 450: Multiple talkers and multiple listeners – Ethernet interconnection
IEC 61924-2:2012, Maritime navigation and radiocommunication equipment and systems –
Integrated navigation systems – Part 2: Modular structure for INS – Operational and
performance requirements, methods of testing and required test results
IEC 62288:2014, Maritime navigation and radiocommunication equipment and systems –
Presentation of navigation-related information on shipborne navigational displays – General
requirements, methods of testing and required test results
IEEE 802.1D-2004, IEEE Standard for Local and metropolitan area networks: Media Access
Control (MAC) Bridges
IEEE 802.1Q, IEEE Standard for Local and metropolitan area networks: Virtual Bridged Local
Area Networks
INTERNET SOCIETY (ISOC). RFC 792, Internet Control Message Protocol (ICMP), Standard
STD0005 (and updates) [online]. Edited by J. Postel. September 1981 [viewed 2018-01-08].
Available at
https://tools.ietf.org/html/rfc792

IEC 61162-460:2018 © IEC 2018 – 9 –
INTERNET SOCIETY (ISOC). RFC 1112, Host Extensions for IP Multicasting [online]. Edited
by S. Deering. August 1989 [viewed 2018-01-08]. Available at
https://www.ietf.org/rfc/rfc1112.txt
INTERNET SOCIETY (ISOC). RFC 1157, A Simple Network Management Protocol (SNMP)
[online]. Edited by J. Case et al. May 1990 [viewed 2018-01-08]. Available at
https://tools.ietf.org/html/rfc1157
INTERNET SOCIETY (ISOC). RFC 2021, Remote Network Monitoring Management
Information Base [online]. Edited by S. Waldbusser. January 1997 [viewed 2018-01-08].
Available at
https://tools.ietf.org/html/rfc2021
INTERNET SOCIETY (ISOC). RFC 2236, Internet Group Management Protocol, Version 2
[online]. Edited by W. Fenner. November 1997 [viewed 2018-01-08]. Available at
https://tools.ietf.org/html/rfc2236
INTERNET SOCIETY (ISOC). RFC 2819, Remote Network Monitoring Management
Information Base [online]. Edited by S. Waldbusser. May 2000 [viewed 2018-01-08]. Available
at
https://tools.ietf.org/html/rfc2819
INTERNET SOCIETY (ISOC). RFC 3411, An Architecture for Describing Simple Network
Management Protocol (SNMP) Management Frameworks [online]. Edited by D. Harrington.
December 2002 [viewed 2018-01-08]. Available at
https://www.ietf.org/rfc/rfc3411.txt
INTERNET SOCIETY (ISOC). RFC 3577, Introduction to the RMON family of MIB modules
[online]. Edited by S. Waldbusser. August 2003 [viewed 2018-01-08]. Available at
https://tools.ietf.org/html/rfc3577
INTERNET SOCIETY (ISOC). RFC 4604, Using Internet Group Management Protocol Version
3 (IGMPv3) and Multicast Listener Discovery Protocol Version 2 (MLDv2) for Source-Specific
Multicast [online]. Edited by H. Holbrook et al. August 2006 [viewed 2018-01-08]. Available at
https://tools.ietf.org/html/rfc4604
INTERNET SOCIETY (ISOC). RFC 5424, The Syslog Protocol [online]. Edited by R. Gerhards.
March 2009 [viewed 2018-01-08]. Available at
https://tools.ietf.org/html/rfc5424
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61162-450 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
450-Node
device compliant with IEC 61162-450 and which satisfies additional requirements specified in
this document
Note 1 to entry: This also includes nodes only implementing the ONF function block.

– 10 – IEC 61162-460:2018 © IEC 2018
3.2
460-Forwarder
network infrastructure device that can safely exchange data streams between a 460-Network
and other controlled networks including other 460-Networks
3.3
460-Gateway
network infrastructure device that connects 460-Networks and uncontrolled networks and
which satisfies the safety and security requirements as specified in this document
3.4
460-Network
network which consists of only 460-Nodes, 460-Switches, 460-Forwarder, 460-Gateway and
460-Wireless gateway as well as 450-Nodes
3.5
460-Node
device compliant with the requirement of a 450-Node and which satisfies the safety and
security requirements as specified in this document
3.6
460-Switch
network infrastructure device used to interconnect nodes on a 460-Network and which
satisfies the safety and security requirements as specified in this document
3.7
460-Wireless gateway
network infrastructure device that connects a 460-Network and wireless networks and which
satisfies the safety and security requirements as specified in this document
3.8
advanced encryption standard
AES
symmetric-key block cipher algorithm which is based on a substitution-permutation network
(SPN) and does not use the data encryption standard (DES) Feistel network
Note 1 to entry: This note applies to the French language only.
3.9
alarm
highest priority of an alert, announcing a situation or condition requiring immediate attention,
decision and, if necessary, action by the bridge team, to maintain the safe navigation of the
ship
3.10
application level gateway
network infrastructure device that connects 460-Networks with other networks and which
satisfies the safety and security requirements as specified in this document
3.11
backdoor
installed program allowing remote access to a computer by providing a method of bypassing
normal authentication
3.12
controlled network
any network that has been designed to operate such that authorities are satisfied by
documented evidence that the network does not pose any security risks to any connected
network nodes
IEC 61162-460:2018 © IEC 2018 – 11 –
Note 1 to entry: For example, any IEC 61162-450 compliant network that is approved by classification society,
flag state or recognized organization (RO).
3.13
category B alert
alert where no additional information for decision support is necessary besides the
information which can be presented at the central alert management HMI
3.14
caution
lowest priority of an alert
Note 1 to entry: "Caution" raises a bridge team's awareness of a condition which does not warrant an alarm or
warning condition, but still requires attention out of the ordinary consideration of the situation or of given
information.
3.15
demilitarized zone
DMZ
physical or logical sub-network that contains and exposes an organization's external-facing
services to a larger and un-trusted network, usually Internet
Note 1 to entry: This note applies to the French language only.
3.16
denial of service
DoS
attempt to prevent legitimate users from accessing a machine or network resource
Note 1 to entry: This note applies to the French language only.
3.17
flow
combination of the following information: source and destination MAC address, source and
destination IP address, protocol, source and destination port number
3.18
failure mode and effects analysis
FMEA
method as specified in IEC 60812 for the analysis of a system to identify the potential failure
modes, their causes and effects on
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