Diameter-Based Protocol in the IP Multimedia Subsystem
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Application Notes for Avaya IP Office Telephony Infrastructure in A
Avaya Solution & Interoperability Test Lab Application Notes for Avaya IP Office Telephony Infrastructure in a Converged VoIP and Data Network using Hewlett Packard Networking Switches configured with 802.1X Authentication - Issue 1.0 Abstract The IEEE 802.1X standard defines a client-server based network access control (NAC) and authentication protocol that restricts unauthorized clients from connecting to a Local Area Network (LAN) through publicly accessible ports. 802.1X provides a means of authenticating and authorizing users attached to a LAN port and of preventing access to that port in cases where the authentication process fails. Hewlett Packard (HP) Networking switches support 802.1X as authenticators and Avaya IP Telephones support 802.1X as supplicants. These Application Notes provides the steps necessary to configure 802.1X on the HP Networking switches for an Avaya IP Telephone with an attached PC. Linux FreeRADIUS is used as the authentication server. Information in these Application Notes has been obtained through DevConnect compliance testing and additional technical discussions. Testing was conducted via the DevConnect Program at the Avaya Solution and Interoperability Test Lab. RDC; Reviewed: Solution & Interoperability Test Lab Application Notes 1 of 21 SPOC 10/18/2012 ©2012 Avaya Inc. All Rights Reserved. HP_IPO80_8021X 1. Introduction The 802.1X protocol is an IEEE standard for media-level network access control (NAC), offering the capability to permit or deny network connectivity, control LAN access, and apply traffic policy, based on user or machine identity. 802.1X consists of three components (or entities): Supplicant – a port access entity (PAE) that requests access to the network. -
Extensible Authentication Protocol (EAP) and IEEE 802.1X: Tutorial and Empirical Experience
CHEN LAYOUT 11/17/05 11:57 AM Page 52 Extensible Authentication Protocol (EAP) and IEEE 802.1x: Tutorial and Empirical Experience JYH-CHENG CHEN AND YU-PING WANG, NATIONAL TSING HUA UNIVERSITY Abstract oped WIRE1x to support various versions of MS Windows. As This article presents the technical details of the Extensible the name suggests, WIRE1x is an open-source implementa- Authentication Protocol (EAP) and IEEE 802.1x by using tion of IEEE 802.1x client (supplicant)1 developed by the WIRE1x, an open-source implementation of IEEE 802.1x Wireless Internet Research & Engineering (WIRE) Laborato- client (supplicant) and various EAP-based authentication ry.2 Both source code and executable code of WIRE1x can be mechanisms. By using a real implementation, 802.1x and EAP downloaded freely from http://wire.cs.nthu.edu.tw/wire1x/. should be easily understood. Essentially, 802.1x provides a framework for port-based access control. It can work with various authentication mecha- nisms to authenticate and authorize users. The Extensible Introduction Authentication Protocol (EAP, IETF RFC 2284) is a protocol Wireless local area networks (WLANs) have become increas- commonly used in 802.1x to authenticate users. Currently, ingly more prevalent in recent years. The IEEE 802.11 stan- WIRE1x provides various authentication mechanisms, includ- dard is one of the most widely adopted standards for ing EAP Message Digest 5 (EAP-MD5, IETF RFC 1321), broadband wireless Internet access. However, security consid- EAP Transport Layer Security (EAP-TLS, IETF RFC 2716), erations with regard to wireless environments are more com- EAP Tunneled TLS (EAP-TTLS) [5], and Protected Extensi- plicated than those in wired environments. -
Diameter Configuration, Maintenance, and DSR Applications Guide 910-6573-001 Revision B December 2012
EAGLE® XG Diameter Signaling Router Diameter Configuration, Maintenance, and DSR Applications Guide 910-6573-001 Revision B December 2012 Copyright 2012 Tekelec. All Rights Reserved. Printed in USA. Legal Information can be accessed from the Main Menu of the optical disc or on the Tekelec Customer Support web site in the Legal Information folder of the Product Support tab. Table of Contents Chapter 1: Introduction.....................................................................12 Purpose of this document......................................................................................................13 Scope and Audience...............................................................................................................13 Manual Organization..............................................................................................................13 Documentation Admonishments..........................................................................................14 Customer Care Center............................................................................................................14 Emergency Response..............................................................................................................16 Locate Product Documentation on the Customer Support Site.......................................17 Chapter 2: Diameter Signaling Router (DSR)...............................18 Diameter Signaling Router Overview..................................................................................19 DSR -
Architectures for Broadband Residential IP Services Over CATV Networks Enrique J
12 Architectures for Broadband Residential IP Services Over CATV Networks Enrique J. Hernandez-Valencia, Bell Laboratories, USA Abstract The current state of the art in digital broadband access technologies to support emerging telecommunications services makes imminent the introduction of interac- tive broadband services — including data, video and the Internet — into the resi- dential market. Over the last few years, much attention has been paid to the development of media access control protocols for cable TV networks that will allow the immediate support of broadband data services as the first step toward enhanced communications services for residential users. Here we review some of the architectural options that must be carefully considered in order to deliver IP ser- vices to such users in an efficient yet flexible manner. uture residential cable data services are expected to • Support for data forwarding/routing services, including IP deliver Internet access, work-at-home applications, Address Resolution Protocol (ARP) and the Internet Con- small business access, local area network LAN-LAN trol Message Protocol (ICMP) interconnect, and LAN emulation services over cable • Host address configuration TV (CATV) networks. These services are anticipated as a • Subscription FFnatural extension to the residential consumer market of the • Security data networking capabilities in the business sector today [1]. In addition, any proposed access architecture for broad- Although related residential Internet Protocol (IP) services band residential data services will be expected to support are already being trialed in the marketplace, substantive existing IP services such as the Dynamic Host Configuration standardization efforts in this area did not materialize until Protocol [6], Domain Name System [8], IP Multicasting and quite recently. -
Kerberos: an Authentication Service for Computer Networks by Clifford Neuman and Theodore Ts’O
Kerberos: An Authentication Service for Computer Networks by Clifford Neuman and Theodore Ts’o Presented by: Smitha Sundareswaran Chi Tsong Su Introduction z Kerberos: An authentication protocol based on cryptography z Designed at MIT under project Athena z Variation of Needham Schroeder protocol - Difference: Kerberos assumes all systems on the network to be synchronized z Similar function as its mythological namesake: “guards” the access to network protocols Contribution z Defines ideas of authentication, Integrity, confidentiality and Authorization z Working of Kerberos z Limitations z Utilities z How to obtain and use Kerberos z Other methods to improve security Why Kerberos? z Foils threats due to eavesdropping z More convenient than password based authentication { Allows user to avoid “authentication by assertion” z Authentication based on cryptography: attacker can’t impersonate a valid user How Kerberos Works z Distributed authentication service using a series of encrypted messages {Password doesn’t pass through the network z Timestamps to reduce the number of messages needed for authentication z “Ticket granting Service” for subsequent authentication Kerberos Authentication and Encryption zAuthentication proves that a client is running on behalf of a particular user zUses encryption key for authentication {Encryption key = Password zEncryption implemented using DES {Checksum included in message checksum and encryption provide integrity & confidentiality The Kerberos Ticket z Initially, client and Server don’t share an encryption -
Telecommunication Services Engineering Lab Roch H. Glitho
Telecommunication Services Engineering Lab 1 Roch H. Glitho Telecommunication Services Engineering Lab Layering in next generation networks Services ( value-added services) also called application / services . Services (Basic service) also called call/session Transport (Below IP + IP + transport layer) also called bearer 2 Roch H. Glitho Telecommunication Services Engineering Lab Layering in next generation networks Infrastructural, application, middleware and baseware services Services NGN Resources service Service Service . management functions control functions Transport Transport s e management functions control functions c r NGN u o s transport e R Transfer functional area 3 Roch H. Glitho Telecommunication Services Engineering Lab Layering in UMTS UMTS (Universal Mobile Telecommunication Systems) - An example of 3G system: - Evolution of GSM - Use of WCDMA - Largest footprint - Another example of 3G system - Evolution of CDMA -One - Use of WCDMA, but a version incompatible with UMTS - Dwindling footprint 4 Roch H. Glitho Telecommunication Services Engineering Lab Layering in UMTS UMTS (Universal Mobile Telecommunication Systems) - UMTS transport: - TCP - IP - Below IP - WCDMA - Bandwidth (Peak rate: single digit Mbits/s – usually lower than 2) 5 Roch H. Glitho Telecommunication Services Engineering Lab Layering in UMTS UMTS (Universal Mobile Telecommunication Systems) - UMTS Service: - IP Multimedia Subsystem (IMS) - Basic service (call / session or control layer) - Value added services (value added service or service layer) - Focus -
Network Access Control and Cloud Security
NETWORK ACCESS CONTROL AND CLOUD SECURITY Tran Song Dat Phuc SeoulTech 2015 Table of Contents Network Access Control (NAC) Network Access Enforcement Methods Extensible Authentication Protocol IEEE 802.1X Port-Based NAC Cloud Computing Cloud Security Risks and Countermeasures Cloud Security as a Service (SecaaS) Network Access Control (NAC) • “Network Access Control (NAC) is a computer networking solution that uses a set of protocols to define and implement a policy that describes how to secure access to network nodes by devices when they initially attempt to access the network.” – wikipedia. • “NAC is an approach to computer network security that attempts to unify endpoint security technology (such as antivirus, host intrusion prevention, and vulnerability assessment), user or system authentication and network security enforcement.” – wikipedia. • NAC authenticates users logging into the network and determines what data they can access and action they can perform. • NAC examines the health of the user’s computer or mobile device (the endpoints). Network Access Control (NAC) • Access requestor (AR): referred to as supplicants, or clients. The AR is the node that is attempting to access the network and may be any device that is managed by the NAC system. • Policy server: Based on the AR’s posture and an enterprise’s defined policy, the policy server determines what access should be granted. • Network access server (NAS): Also called a media gateway, a remote access server (RAS), or a policy server. The NAS functions as an access control point for users in remote locations connecting to an enterprise’s internal network. Network Access Control (NAC) NAC Context Network Access Enforcement Methods • Enforcement methods are the actions that are applied to ARs to regulate access to the enterprise network. -
PUF Based Authentication Protocol for Iot
S S symmetry Article PUF Based Authentication Protocol for IoT An Braeken Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium; [email protected]; Tel.: +32-468-104-767 Received: 11 July 2018; Accepted: 11 August 2018; Published: 20 August 2018 Abstract: Key agreement between two constrained Internet of Things (IoT) devices that have not met each other is an essential feature to provide in order to establish trust among its users. Physical Unclonable Functions (PUFs) on a device represent a low cost primitive exploiting the unique random patterns in the device and have been already applied in a multitude of applications for secure key generation and key agreement in order to avoid an attacker to take over the identity of a tampered device, whose key material has been extracted. This paper shows that the key agreement scheme of a recently proposed PUF based protocol, presented by Chatterjee et al., for Internet of Things (IoT) is vulnerable for man-in-the-middle, impersonation, and replay attacks in the Yao–Dolev security model. We propose an alternative scheme, which is able to solve these issues and can provide in addition a more efficient key agreement and subsequently a communication phase between two IoT devices connected to the same authentication server. The scheme also offers identity based authentication and repudiation, when only using elliptic curve multiplications and additions, instead of the compute intensive pairing operations. Keywords: physical unclonable function; authentication; elliptic curve cryptography; internet of things 1. Introduction Internet of Things (IoT) is experiencing worldwide growth. Not only classical computing and communication devices are connected, but also a whole range of other gadgets that are used in our daily life, such as thermostats, light switches, door locks, refrigerators, etc. -
Recommendation for EAP Methods
Archived NIST Technical Series Publication The attached publication has been archived (withdrawn), and is provided solely for historical purposes. It may have been superseded by another publication (indicated below). Archived Publication Series/Number: NIST Special Publication 800-120 Title: Recommendation for EAP Methods Used in Wireless Network Access Authentication Publication Date(s): September 2009 Withdrawal Date: October 19, 2018 Withdrawal Note: This publication is out of date. Refer to relevant standards from the Internet Engineering Task Force (IETF), http://www.ietf.org/ . Superseding Publication(s) The attached publication has been superseded by the following publication(s): Series/Number: Title: Author(s): Publication Date(s): URL/DOI: Additional Information (if applicable) Contact: Computer Security Division (Information Technology Laboratory) Latest revision of the attached publication: Related information: https://csrc.nist.gov https://csrc.nist.gov/publications/detail/sp/800-120/archive/2009-09-17 Withdrawal N/A announcement (link): Date updated: October 19, 2018 NIST Special Publication 800-120 Recommendation for EAP Methods Used in Wireless Network Access Authentication Katrin Hoeper and Lily Chen Computer Security Division Information Technology Laboratory C O M P U T E R S E C U R I T Y September 2009 U.S. Department of Commerce Gary Locke, Secretary National Institute of Standards and Technology Patrick Gallagher, Deputy Director Abstract This Recommendation specifies security requirements for authentication methods with key establishment supported by the Extensible Authentication Protocol (EAP) defined in IETF RFC 3748 for wireless access authentications to federal networks. KEY WORDS: EAP methods, authentication, key establishment. SP 800-120: Recommendation for EAP Methods Used in Wireless Network Access Authentication Acknowledgments The authors, Katrin Hoeper and Lily Chen, wish to thank their colleagues who reviewed drafts of this document and contributed to its technical content. -
Nist Sp 800-77 Rev. 1 Guide to Ipsec Vpns
NIST Special Publication 800-77 Revision 1 Guide to IPsec VPNs Elaine Barker Quynh Dang Sheila Frankel Karen Scarfone Paul Wouters This publication is available free of charge from: https://doi.org/10.6028/NIST.SP.800-77r1 C O M P U T E R S E C U R I T Y NIST Special Publication 800-77 Revision 1 Guide to IPsec VPNs Elaine Barker Quynh Dang Sheila Frankel* Computer Security Division Information Technology Laboratory Karen Scarfone Scarfone Cybersecurity Clifton, VA Paul Wouters Red Hat Toronto, ON, Canada *Former employee; all work for this publication was done while at NIST This publication is available free of charge from: https://doi.org/10.6028/NIST.SP.800-77r1 June 2020 U.S. Department of Commerce Wilbur L. Ross, Jr., Secretary National Institute of Standards and Technology Walter Copan, NIST Director and Under Secretary of Commerce for Standards and Technology Authority This publication has been developed by NIST in accordance with its statutory responsibilities under the Federal Information Security Modernization Act (FISMA) of 2014, 44 U.S.C. § 3551 et seq., Public Law (P.L.) 113-283. NIST is responsible for developing information security standards and guidelines, including minimum requirements for federal information systems, but such standards and guidelines shall not apply to national security systems without the express approval of appropriate federal officials exercising policy authority over such systems. This guideline is consistent with the requirements of the Office of Management and Budget (OMB) Circular A-130. Nothing in this publication should be taken to contradict the standards and guidelines made mandatory and binding on federal agencies by the Secretary of Commerce under statutory authority. -
Formal Analysis of Combinations of Secure Protocols Elliott Blot, Jannik Dreier, Pascal Lafourcade
Formal Analysis of Combinations of Secure Protocols Elliott Blot, Jannik Dreier, Pascal Lafourcade To cite this version: Elliott Blot, Jannik Dreier, Pascal Lafourcade. Formal Analysis of Combinations of Secure Protocols. FPS 2017 - 10th International Symposium on Foundations & Practice of Security, Oct 2017, Nancy, France. pp.53-67, 10.1007/978-3-319-75650-9_4. hal-01596010v2 HAL Id: hal-01596010 https://hal.archives-ouvertes.fr/hal-01596010v2 Submitted on 11 Nov 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Formal Analysis of Combinations of Secure Protocols? Elliott Blot1, Jannik Dreier2, and Pascal Lafourcade1 1 LIMOS, University Clermont Auvergne, France [email protected] 2 LORIA, Universit´ede Lorraine, INRIA, CNRS, France [email protected] 3 LIMOS, University Clermont Auvergne, France [email protected] Abstract. When trying to prove the security of a protocol, one usually analyzes the protocol in isolation, i.e., in a network with no other proto- cols. But in reality, there will be many protocols operating on the same network, maybe even sharing data including keys, and an intruder may use messages of one protocol to break another. We call that a multi- protocol attack. -
TC7200.20 User Manual
Safety Instructions Using equipment safely Your Cable Modem Gateway product has been manufactured to meet European and local safety standards, but you must take care if you want it to perform properly and safely. It is important that you read this booklet completely, especially the safety instructions below. Equipment connected to the protective earth of the building installation through the mains connection or through other equipment with a connection to protective earth and to a cable distribution system using coaxial cable, may in some circumstances create fire hazard. Connection to a cable distribution system has therefore to be provided through a device providing electrical isolation below a certain frequency range (galvanic isolator, see EN 60728-11). If you have any doubts about the installation, operation or safety of the product, please contact your supplier. To avoid the risk of electric shock Disconnect the Cable Modem Gateway product from the mains supply before you connect it to (or disconnect it from) any other equipments. Remember that contact with Mains can be lethal or causes severe electric shock. Never remove the product cover. Should the product fail, contact the Customer Service to arrange repair or service. Never allow anyone to push anything into holes, slots or any other opening in the case Do not block the ventilation slots; never stand it on soft furnishings or carpets Do not put anything on it which might spill or drip into it (e.g. Lighted candles or containers of liquids). Do not expose it to dripping or splashing. If an object or liquid enters inside the Cable Modem, unplug it immediately and contact the Customer Service.