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Security in Telecommunications
Security in Telecommunications
Published: 2017/06/20
Channel: Nandhana Sathish
Network and Security Services
Network and Security Services
Published: 2012/09/14
Channel: Rockwell Automation
V1: Fundamentals of Telecom 1 - Introduction and Preview
V1: Fundamentals of Telecom 1 - Introduction and Preview
Published: 2014/01/23
Channel: Teracom Training Institute
Telecom and Security Solutions
Telecom and Security Solutions
Published: 2017/01/31
Channel: Nutech Solutions
Found in the wild: Telecom Fraud and Security Problems
Found in the wild: Telecom Fraud and Security Problems
Published: 2013/09/06
Channel: Official Asterisk YouTube Channel
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Telecommunications 01/10 - Introduction structure regulation and competition in the telecom sector
Published: 2010/02/16
Channel: UniBocconi
System telecom security
System telecom security
Published: 2014/01/22
Channel: Sts Ca
1. Introduction to Security
1. Introduction to Security
Published: 2017/02/25
Channel: Pritesh Prajapati
Telecommunication Services Bingham Farms MI, Windstream
Telecommunication Services Bingham Farms MI, Windstream
Published: 2014/04/04
Channel: Windstream
Internet security services
Internet security services
Published: 2016/08/12
Channel: learnintsec
"Telecom Security" Session By  Moutaz Elhosseiny CSCAMP2015
"Telecom Security" Session By Moutaz Elhosseiny CSCAMP2015
Published: 2016/01/19
Channel: Bluekaizen
Telecom Business Network Solutions | RAM Communications
Telecom Business Network Solutions | RAM Communications
Published: 2014/04/17
Channel: RAM Communications Inc
First Security Services
First Security Services
Published: 2015/02/27
Channel: Guards Services
Daniel Kwong (SVP, IT & Security Services) was interviewed by Quamnet on QOEA2016
Daniel Kwong (SVP, IT & Security Services) was interviewed by Quamnet on QOEA2016
Published: 2017/02/02
Channel: CITIC Telecom CPC
Introduction to Telecommunication & Networking Security
Introduction to Telecommunication & Networking Security
Published: 2011/01/10
Channel: livogroup
What Are The Network Security Services?
What Are The Network Security Services?
Published: 2017/08/16
Channel: Oakley Oakley
Telecommunications: More power to ASIO
Telecommunications: More power to ASIO
Published: 2017/08/16
Channel: Liberal Democrats (Australia)
The Security Service of Ukraine blocked the communication channel of Russians terrorists
The Security Service of Ukraine blocked the communication channel of Russians terrorists
Published: 2016/05/19
Channel: MrNesemi
Telecommunication Services (Video Tutorial)
Telecommunication Services (Video Tutorial)
Published: 2013/03/18
Channel: Khimbyrlee Eerlrybmihk
TATA COMMUNICATIONS – Recruitment Notification 2017, Communication jobs,IT Jobs,Career,Oppurtunities
TATA COMMUNICATIONS – Recruitment Notification 2017, Communication jobs,IT Jobs,Career,Oppurtunities
Published: 2015/04/14
Channel: Freshersworld
Telecommunications and BlockChain - IIT RTC Conference 2016
Telecommunications and BlockChain - IIT RTC Conference 2016
Published: 2016/11/03
Channel: School of Applied Tech at Illinois Tech
FishNet Security - TELECOMMUNICATIONS
FishNet Security - TELECOMMUNICATIONS
Published: 2012/09/20
Channel: FishNetSecurity
Blockchain: What
Blockchain: What's In It For The Communications Industry?
Published: 2017/04/12
Channel: Infosys
Networking Interview Question and Answers
Networking Interview Question and Answers
Published: 2016/05/01
Channel: LearnEveryone
Information Technology Services (ITS)
Information Technology Services (ITS)
Published: 2013/08/02
Channel: QUICK-FICS
We have all the answers for your telecommunication & security needs.
We have all the answers for your telecommunication & security needs.
Published: 2014/01/09
Channel: SGD Communications
Network Technician Tool Bag
Network Technician Tool Bag
Published: 2015/10/28
Channel: Network Advisor
Network Management
Network Management
Published: 2017/04/13
Channel: Networking Made Easy
MidCo, Inc.
MidCo, Inc.
Published: 2013/02/14
Channel: dexknowsvideo36
Security & Telecommunication Products by Atlanta Systems Private Limited, New Delhi
Security & Telecommunication Products by Atlanta Systems Private Limited, New Delhi
Published: 2014/02/05
Channel: IndiaMART
Telecom Cloud Services 2011 Interview - Anthony Hill, Nokia Siemens Networks
Telecom Cloud Services 2011 Interview - Anthony Hill, Nokia Siemens Networks
Published: 2011/09/27
Channel: IIRTelecoms
Are telecom companies making fool to customers in name of 4G services?
Are telecom companies making fool to customers in name of 4G services?
Published: 2016/07/27
Channel: Zee News
Telecommunication : Computer Networks (part 1) (05:04)
Telecommunication : Computer Networks (part 1) (05:04)
Published: 2014/06/17
Channel: Mr. Ford's Class
Hack.lu 2017 TIDS: A Framework for Detecting Threats in Telecom Networks
Hack.lu 2017 TIDS: A Framework for Detecting Threats in Telecom Networks
Published: 2017/10/19
Channel: Cooper
Network & Telecom Equipment | The Evolution of Customer Service
Network & Telecom Equipment | The Evolution of Customer Service
Published: 2014/06/06
Channel: ModernEnterprise.com
Taras Puzo\Managed cyber security service. Cyber attack damage.
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Published: 2017/02/01
Channel: Keenethics Web Development
Hack.lu 2016 Fraud detection and forensics on telco networks
Hack.lu 2016 Fraud detection and forensics on telco networks
Published: 2016/10/20
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Telecom Trends: What Do Customers Expect from Telecom Providers?
Telecom Trends: What Do Customers Expect from Telecom Providers?
Published: 2017/05/22
Channel: SMARTASSISTANT
IoT Product Management and Strategy - Inside Telecom Careers Episode 11
IoT Product Management and Strategy - Inside Telecom Careers Episode 11
Published: 2015/09/03
Channel: RCR Wireless News
Network Security Services | (800) 310-2739
Network Security Services | (800) 310-2739
Published: 2016/03/22
Channel: Apex Technology Management, Inc.
Top 3 Wireless Infrastructure Service Company Workforce Trends - Inside Telecom Careers Episode 12
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Published: 2015/09/10
Channel: RCR Wireless News
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Published: 2017/03/08
Channel: ARIRANG NEWS
Attacking SDN Infrastructure: Are We Ready for the Next-Gen Networking?
Attacking SDN Infrastructure: Are We Ready for the Next-Gen Networking?
Published: 2016/11/22
Channel: Black Hat
Security Industry in Nigeria with Percy Raditladi
Security Industry in Nigeria with Percy Raditladi
Published: 2011/03/24
Channel: CNBCAfrica
Telecommunications Technology Program
Telecommunications Technology Program
Published: 2016/09/05
Channel: Associated Technical College
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Mobile and Wireless Telecommunication Devices - Teltonika - Safety Security India 2016
Published: 2016/03/23
Channel: HYBIZTV HD
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Published: 2017/03/01
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Telecommunications Networking Technician
Telecommunications Networking Technician
Published: 2016/12/02
Channel: Saskatchewan Polytechnic
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Published: 2010/06/14
Channel: UniBocconi
Revenge on a IRS Phone Scamming Company - Call Flooder
Revenge on a IRS Phone Scamming Company - Call Flooder
Published: 2017/06/23
Channel: Nicole Mayhem
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WIKIPEDIA ARTICLE

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Security service is a service, provided by a layer of communicating open systems, which ensures adequate security of the systems or of data transfers[1] as defined by ITU-T X.800 Recommendation.
X.800 and ISO 7498-2 (Information processing systems – Open systems interconnection – Basic Reference Model – Part 2: Security architecture)[2] are technically aligned. This model is widely recognized [3] [4]

A more general definition is in CNSS Instruction No. 4009 dated 26 April 2010 by Committee on National Security Systems of United States of America:[5]

A capability that supports one, or more, of the security requirements (Confidentiality, Integrity, Availability). Examples of security services are key management, access control, and authentication.

Another authoritative definition is in W3C Web service Glossary [6] adopted by NIST SP 800-95:[7]

A processing or communication service that is provided by a system to give a specific kind of protection to resources, where said resources may reside with said system or reside with other systems, for example, an authentication service or a PKI-based document attribution and authentication service. A security service is a superset of AAA services. Security services typically implement portions of security policies and are implemented via security mechanisms.

Basic security terminology[edit]

Information security and Computer security are disciplines that are dealing with the requirements of Confidentiality, Integrity, Availability, the so-called CIA Triad, of information asset of an organization (company or agency) or the information managed by computers respectively.

There are threats that can attack the resources (information or devices to manage it) exploiting one or more vulnerabilities. The resources can be protected by one or more countermeasures or security controls.[8]

So security services implement part of the countermeasures, trying to achieve the security requirements of an organization.[3][9]

Basic OSI terminology[edit]

In order to let different devices (computers, routers, cellular phones) to communicate data in a standardized way, communication protocols had been defined.

The ITU-T organization published a large set of protocols. The general architecture of these protocols is defined in recommendation X.200.[10]

The different means (air, cables) and ways (protocols and protocol stacks) to communicate are called a communication network.

Security requirements are applicable to the information sent over the network. The discipline dealing with security over a network is called Network security.[11]

The X.800 Recommendation:[1]

  1. provides a general description of security services and related mechanisms, which may be provided by the Reference Model; and
  2. defines the positions within the Reference Model where the services and mechanisms may be provided.

This Recommendation extends the field of application of Recommendation X.200, to cover secure communications between open systems.

According to X.200 Recommendation, in the so-called OSI Reference model there are 7 layers, each one is generically called N layer. The N+1 entity ask for transmission services to the N entity.[10]

At each level two entities (N-entity) interact by means of the (N) protocol by transmitting Protocol Data Units (PDU). Service Data Unit (SDU) is a specific unit of data that has been passed down from an OSI layer, to a lower layer, and has not yet been encapsulated into a PDU, by the lower layer. It is a set of data that is sent by a user of the services of a given layer, and is transmitted semantically unchanged to a peer service user . The PDU at any given layer, layer 'n', is the SDU of the layer below, layer 'n-1'. In effect the SDU is the 'payload' of a given PDU. That is, the process of changing a SDU to a PDU, consists of an encapsulation process, performed by the lower layer. All the data contained in the SDU becomes encapsulated within the PDU. The layer n-1 adds headers or footers, or both, to the SDU, transforming it into a PDU of layer n-1. The added headers or footers are part of the process used to make it possible to get data from a source to a destination.[10]

OSI Security Services General description[edit]

The following are considered to be the security services which can be provided optionally within the framework of the OSI Reference Model. The authentication services require authentication information comprising locally stored information and data that is transferred (credentials) to facilitate the authentication:[1][4]

Authentication
These services provide for the authentication of a communicating peer entity and the source of data as described below.
Peer entity authentication
This service, when provided by the (N)-layer, provides corroboration to the (N + 1)-entity that the peer entity is the claimed (N + 1)-entity.
Data origin authentication
This service, when provided by the (N)-layer, provides corroboration to an (N + 1)-entity that the source of the data is the claimed peer (N + 1)-entity.
Access control
This service provides protection against unauthorized use of resources accessible via OSI. These may be OSI or non-OSI resources accessed via OSI protocols. This protection service may be applied to various types of access to a resource (e.g., the use of a communications resource; the reading, the writing, or the deletion of an information resource; the execution of a processing resource) or to all accesses to a resource.
Data confidentiality
These services provide for the protection of data from unauthorized disclosure as described below
Connection confidentiality
This service provides for the confidentiality of all (N)-user-data on an (N)-connection
Connectionless confidentiality
This service provides for the confidentiality of all (N)-user-data in a single connectionless (N)-SDU
Selective field confidentiality
This service provides for the confidentiality of selected fields within the (N)-user-data on an (N)-connection or in a single connectionless (N)-SDU.
Traffic flow confidentiality
This service provides for the protection of the information which might be derived from observation of traffic flows.
Data integrity
These services counter active threats and may take one of the forms described below.
Connection integrity with recovery
This service provides for the integrity of all (N)-user-data on an (N)-connection and detects any modification, insertion, deletion or replay of any data within an entire SDU sequence (with recovery attempted).
Connection integrity without recovery
As for the previous one but with no recovery attempted.
Selective field connection integrity
This service provides for the integrity of selected fields within the (N)-user data of an (N)-SDU transferred over a connection and takes the form of determination of whether the selected fields have been modified, inserted, deleted or replayed.
Connectionless integrity
This service, when provided by the (N)-layer, provides integrity assurance to the requesting (N + 1)-entity. This service provides for the integrity of a single connectionless SDU and may take the form of determination of whether a received SDU has been modified. Additionally, a limited form of detection of replay may be provided.
Selective field connectionless integrity
This service provides for the integrity of selected fields within a single connectionless SDU and takes the form of determination of whether the selected fields have been modified.
Non-repudiation
This service may take one or both of two forms.
Non-repudiation with proof of origin
The recipient of data is provided with proof of the origin of data. This will protect against any attempt by the sender to falsely deny sending the data or its contents.
Non-repudiation with proof of delivery
The sender of data is provided with proof of delivery of data. This will protect against any subsequent attempt by the recipient to falsely deny receiving the data or its contents.

Specific security mechanisms[edit]

The security services may be provided by means of security mechanism:[1][3][4]

The table1/X.800 shows the relationships between services and mechanisms

Illustration of relationship of security services and mechanisms
Service Mechanism
Encipherment Digital signature Access control Data integrity Authentication exchange Traffic padding Routing control Notarization
Peer entity authentication Y Y · · Y · · ·
Data origin authentication Y Y · · · · · ·
Access control service · · Y · · · · ·
Connection confidentiality Y . · · · · Y ·
Connectionless confidentiality Y · · · · · Y ·
Selective field confidentiality Y · · · · · · ·
Traffic flow confidentiality Y · · · · Y Y ·
Connection Integrity with recovery Y · · Y · · · ·
Connection integritywithout recovery Y · · Y · · · ·
Selective field connection integrity Y · · Y · · · ·
Connectionless integrity Y Y · Y · · · ·
Selective field connectionless integrity Y Y · Y · · · ·
Non-repudiation. Origin · Y · Y · · · Y
Non-repudiation. Delivery Y · Y · · · Y

Some of them can be applied to connection oriented protocols, other to connectionless protocols or both.

The table 2/X.800 illustrates the relationship of security services and layers:[4]

Illustration of the relationship of security services and layers
Service Layer
1 2 3 4 5 6 7*
Peer entity authentication · · Y Y · · Y
Data origin authentication · · Y Y · · Y
Access control service · · Y Y · · Y
Connection confidentiality Y Y Y Y · Y Y
Connectionless confidentiality · Y Y Y · Y Y
Selective field confidentiality · · · · · Y Y
Traffic flow confidentiality Y · Y · · · Y
Connection Integrity with recovery · · · Y · · Y
Connection integrity without recovery · · Y Y · · Y
Selective field connection integrity · · · · · · Y
Connectionless integrity · · Y Y · · Y
Selective field connectionless integrity · · · · · · Y
Non-repudiation Origin · · · · · · Y
Non-repudiation. Delivery · · · · · · Y

Other related meanings[edit]

Managed Security Service[edit]

Managed Security Service (MSS) are network security services that have been outsourced to a service provider.

See also[edit]

References[edit]

  1. ^ a b c d X.800 : Security architecture for Open Systems Interconnection for CCITT applications
  2. ^ ISO 7498-2 (Information processing systems – Open systems interconnection – Basic Reference Model – Part 2: Security architecture)
  3. ^ a b c William Stallings Crittografia e sicurezza delle reti Seconda edizione ISBN 88-386-6377-7 Traduzione Italiana a cura di Luca Salgarelli di Cryptography and Network security 4 edition Pearson 2006
  4. ^ a b c d Securing information and communications systems: principles, technologies, and applications Steven Furnell, Sokratis Katsikas, Javier Lopez, Artech House, 2008 - 362 pages
  5. ^ CNSS Instruction No. 4009 dated 26 April 2010
  6. ^ W3C Web Services Glossary
  7. ^ NIST Special Publication 800-95 Guide to Secure Web Services
  8. ^ Internet Engineering Task Force RFC 2828 Internet Security Glossary
  9. ^ Network security essentials: applications and standards, William Stallings,Prentice Hall, 2007 - 413 pages
  10. ^ a b c X.200 : Information technology - Open Systems Interconnection - Basic Reference Model: The basic model
  11. ^ Simmonds, A; Sandilands, P; van Ekert, L (2004). "An Ontology for Network Security Attacks". Lecture Notes in Computer Science 3285: 317–323

External links[edit]

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