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SILC-A SECURED INTERNET CHAT PROTOCOL Anindita Sinha1, Saugata Sinha2 Asst
ISSN (Print) : 2320 – 3765 ISSN (Online): 2278 – 8875 International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering Vol. 2, Issue 5, May 2013 SILC-A SECURED INTERNET CHAT PROTOCOL Anindita Sinha1, Saugata Sinha2 Asst. Prof, Dept. of ECE, Siliguri Institute of Technology, Sukna, Siliguri, West Bengal, India 1 Network Engineer, Network Dept, Ericsson Global India Ltd, India2 Abstract:-. The Secure Internet Live Conferencing (SILC) protocol, a new generation chat protocol provides full featured conferencing services, compared to any other chat protocol. Its main interesting point is security which has been described all through the paper. We have studied how encryption and authentication of the messages in the network achieves security. The security has been the primary goal of the SILC protocol and the protocol has been designed from the day one security in mind. In this paper we have studied about different keys which have been used to achieve security in the SILC protocol. The main function of SILC is to achieve SECURITY which is most important in any chat protocol. We also have studied different command for communication in chat protocols. Keywords: SILC protocol, IM, MIME, security I.INTRODUCTION SILC stands for “SECURE INTERNET LIVE CONFERENCING”. SILC is a secure communication platform, looks similar to IRC, first protocol & quickly gained the status of being the most popular chat on the net. The security is important feature in applications & protocols in contemporary network environment. It is not anymore enough to just provide services; they need to be secure services. The SILC protocol is a new generation chat protocol which provides full featured conferencing services; additionally it provides security by encrypting & authenticating the messages in the network. -
List of TCP and UDP Port Numbers
List of TCP and UDP port numbers From Wikipedia, the free encyclopedia Jump to: navigation, search This is a list of Internet socket port numbers used by protocols of the Transport Layer of the Internet Protocol Suite for the establishment of host-to-host communications. Originally, these port numbers were used by the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP), but are used also for the Stream Control Transmission Protocol (SCTP), and the Datagram Congestion Control Protocol (DCCP). SCTP and DCCP services usually use a port number that matches the service of the corresponding TCP or UDP implementation if they exist. The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses.[1] However, many unofficial uses of both well- known and registered port numbers occur in practice. Contents [hide] y 1 Table legend y 2 Well-known ports: 0±1023 y 3 Registered ports: 1024±49151 y 4 Dynamic, private or ephemeral ports: 49152±65535 y 5 See also y 6 References y 7 External links [edit] Table legend Color coding of table entries Official Port/application combination is registered with IANA Unofficial Port/application combination is not registered with IANA Conflict Port is in use for multiple applications [edit] Well-known ports: 0±1023 The port numbers in the range from 0 to 1023 are the well-known ports. They are used by system processes that provide widely-used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the well-known ports. -
Secure Internet Live Conferencing
Einführung SILC vs. IRC vs. XMPP Architektur Nachrichten Protokoll Secure Internet Live Conferencing Frank Benkstein <[email protected]> 26.10.2007, 19:12:23h Frank Benkstein <[email protected]> Secure Internet Live Conferencing Einführung SILC vs. IRC vs. XMPP Architektur Nachrichten Protokoll Übersicht I Einführung I SILC vs. IRC vs. XMPP I Architektur I Protokoll Frank Benkstein <[email protected]> Secure Internet Live Conferencing Einführung SILC vs. IRC vs. XMPP Architektur Nachrichten Protokoll Geschichte Geschichte 1996 Idee und Entwurf durch Pekka Riikonen 1997 erster Code 1998 Rewrite in C++ 1999 Rewrite in C 2000 erste Veröffentlichung der Quelltexte Einreichung der Spezifikationen bei der IETF 2003 SILC-Client 1.0 Frank Benkstein <[email protected]> Secure Internet Live Conferencing Einführung SILC vs. IRC vs. XMPP Architektur Nachrichten Protokoll Design Ziele I Echtzeit-Text-Kommunikation I Viele-Zu-Viele (ähnlich IRC) I Eins-Zu-Eins (Instant Messaging) I Multimedia-Fähigkeit I Datei-Transfer I Sicherheit I Modularität Frank Benkstein <[email protected]> Secure Internet Live Conferencing Einführung SILC vs. IRC vs. XMPP Architektur Nachrichten Protokoll Protokoll-Eigenschaften Protokoll-Eigenschaften I Verschlüsselung I gesamte Kommunikation verschüsselt und authentifiziert I unverschlüsselte Kommunikation unmöglich* I Signatur von Nachrichten I Unicode (UTF-8) statt ASCII I Nicknames I Channel-Namen I Nachrichten I Peer-to-Peer für Dateitransfer I alles andere über Server Frank Benkstein <[email protected]> Secure Internet Live Conferencing Einführung SILC vs. IRC vs. XMPP Architektur Nachrichten Protokoll Protokoll-Eigenschaften Clients I eindeutige Client-ID I Nicknamen I nicht eindeutig* I UTF-8 I bis zu 128 Bytes (!) lang I gleicher Public-Key möglich Frank Benkstein <[email protected]> Secure Internet Live Conferencing Einführung SILC vs. -
Henning Schulzrinne Julian Clarence Levi Professor Work Phone: +1 212
Henning Schulzrinne Julian Clarence Levi Professor work phone: +1 212 939 7042 Dept. of Computer Science fax: +1 212 666 0140 Columbia University email: [email protected] New York, NY 10027 WWW: http://www.cs.columbia.edu/˜hgs USA SIP: sip:[email protected] INTERESTS Internet multimedia, policy, services, architecture, computer networks and performance evaluation. Telecommunication policy; Internet telephony, collaboration and media-on- demand; Internet of things; emergency services; signaling and session control; mobile ap- plications; ubiquitous and pervasive computing; network measurements; quality of service; Internet protocols and services; congestion control and adaptive multimedia services; im- plementations of multi-media and real-time networks; operating system support for high- bandwidth services with real-time constraints; performance analysis of computer networks and systems. WORK EXPERIENCE Technology Fellow, Senator Ron Wyden (U.S. Senate), September 2019–August 2020. Chief Technology Officer, Federal Communications Commission (FCC), January 2017– August 2017. Senior Advisor for Technology, Federal Communications Commission (FCC), September 2016–December 2016. Technology Advisor, Federal Communications Commission (FCC), September 2014–August 2016. Chief Technology Officer, Federal Communications Commission (FCC), January 2012– August 2014. Engineering Fellow, Federal Communications Commission (FCC), Sept. 2010–May 2011. Professor (tenured), Dept. of Computer Science and Dept. of Electrical Engineering (joint appointment), Columbia University. August 1996–. Department vice chair, 2002– 2003; Department chair, 2004–2009. Researcher, GMD Fokus1, Berlin, Germany. March 1994 - July 1996. Multimedia sys- tems, ATM performance issues. Deputy department head; project leader TOMQAT, Multicube, MMTng. Lecturer at Technical University Berlin. Consultant, 1994-1996: design and implementation of an Internet packet audio tool for a WWW-based “Virtual Places” shared environment (Ubique, Israel). -
List of TCP and UDP Port Numbers - Wikipedia, the Free Encyclopedia 6/12/11 3:20 PM
List of TCP and UDP port numbers - Wikipedia, the free encyclopedia 6/12/11 3:20 PM List of TCP and UDP port numbers From Wikipedia, the free encyclopedia (Redirected from TCP and UDP port numbers) This is a list of Internet socket port numbers used by protocols of the Transport Layer of the Internet Protocol Suite for the establishment of host-to-host communications. Originally, these port numbers were used by the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP), but are used also for the Stream Control Transmission Protocol (SCTP), and the Datagram Congestion Control Protocol (DCCP). SCTP and DCCP services usually use a port number that matches the service of the corresponding TCP or UDP implementation if they exist. The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses.[1] However, many unofficial uses of both well-known and registered port numbers occur in practice. Contents 1 Table legend 2 Well-known ports: 0–1023 3 Registered ports: 1024–49151 4 Dynamic, private or ephemeral ports: 49152–65535 5 See also 6 References 7 External links Table legend Color coding of table entries Official Port/application combination is registered with IANA Unofficial Port/application combination is not registered with IANA Conflict Port is in use for multiple applications (may be official or unofficial) Well-known ports: 0–1023 The port numbers in the range from 0 to 1023 are the well-known ports. They are used by system processes that provide widely-used types of network services. -
Automotive Ethernet: the Definitive Guide
Automotive Ethernet: The Definitive Guide Charles M. Kozierok Colt Correa Robert B. Boatright Jeffrey Quesnelle Illustrated by Charles M. Kozierok, Betsy Timmer, Matt Holden, Colt Correa & Kyle Irving Cover by Betsy Timmer Designed by Matt Holden Automotive Ethernet: The Definitive Guide. Copyright © 2014 Intrepid Control Systems. All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and publisher. Printed in the USA. ISBN-10: 0-9905388-0-X ISBN-13: 978-0-9905388-0-6 For information on distribution or bulk sales, contact Intrepid Control Systems at (586) 731-7950. You can purchase the paperback or electronic version of this book at www.intrepidcs.com or on Amazon. We’d love to hear your feedback about this book—email us at [email protected]. Product and company names mentioned in this book may be the trademarks of their respective owners. Rather than use a trademark symbol with every occurence of a trademarked name, we are using the names only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. The information in this book is distributed on an “As Is” basis, without warranty. While every precaution has been taken in the preparation of this book, neither the authors nor Intrepid Control Systems shall have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by the information contained in this book. -
A Perfectly Good Hour
A PERFECTLY GOOD HOUR 1. Social Capital 2. Social Intelligence 3. Listening 4. Identity 5. Language & Cursing 6. Nonverbal Communication 7. Satisfying Relationships 8. Consummate Love 9. Conflict Management 10. Styles of Parenting/Leading Modern Social Commentary Cartoons by David Hawker from PUNCH Magazine, 1981 A PERFECTLY GOOD HOUR Feel free to voice your opinion and to disagree. This is not a friction- free zone. AND, please do demonstrate social intelligence. Let’s Get Better Acquainted If you match this descriptor, keep your 1. You belong to an LLI Special Interest Group video on and unmute. 2. You are fluent in another language 3. You’ve received your flu shot If you don’t match this 4. You attended the LLI class on nanotechnology descriptor, temporarily 5. You have grandchildren stop your video. 6. You (have) participate(d) in Great Decisions 7. You have a pet 8. You play a musical instrument 9. You are/have been on the LLI Board 10. You think this is a fun poll How fortunate we are that during this global pandemic, we can stay home, attending LLI classes, reading, creating, baking, taking walks, and talking with our loved one. The last six months have exposed and magnified long standing inequities -- in our communities, in our hospitals, in our workplaces, and in schools. Too many of our school districts lack a fair share of resources to address the pandemic’s challenges; not every student can be taught remotely with attention to their need for social and emotional safe learning spaces. The current circumstances are poised to exacerbate existing disparities in academic opportunity and performance, particularly between white communities and communities of color. -
List of TCP and UDP Port Numbers from Wikipedia, the Free Encyclopedia
List of TCP and UDP port numbers From Wikipedia, the free encyclopedia This is a list of Internet socket port numbers used by protocols of the transport layer of the Internet Protocol Suite for the establishment of host-to-host connectivity. Originally, port numbers were used by the Network Control Program (NCP) in the ARPANET for which two ports were required for half- duplex transmission. Later, the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) needed only one port for full- duplex, bidirectional traffic. The even-numbered ports were not used, and this resulted in some even numbers in the well-known port number /etc/services, a service name range being unassigned. The Stream Control Transmission Protocol database file on Unix-like operating (SCTP) and the Datagram Congestion Control Protocol (DCCP) also systems.[1][2][3][4] use port numbers. They usually use port numbers that match the services of the corresponding TCP or UDP implementation, if they exist. The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses.[5] However, many unofficial uses of both well-known and registered port numbers occur in practice. Contents 1 Table legend 2 Well-known ports 3 Registered ports 4 Dynamic, private or ephemeral ports 5 See also 6 References 7 External links Table legend Official: Port is registered with IANA for the application.[5] Unofficial: Port is not registered with IANA for the application. Multiple use: Multiple applications are known to use this port. Well-known ports The port numbers in the range from 0 to 1023 are the well-known ports or system ports.[6] They are used by system processes that provide widely used types of network services. -
CLOUD & Cyber-Security Driven Inflection Point
CLOUD & Cyber-Security Driven Inflection Point November 14, 2017 Safe Harbor Guidelines & Legal Notes The information presented today contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Such statements may include, but are not limited to, anticipated future financial and operating results and Silicom’s outlook and prospects. Those statements are based on management’s current beliefs, expectations and assumptions, which may be affected by subsequent business, political, environmental, regulatory, economic and other conditions, and necessarily involve known and unknown risks and uncertainties, which include, but are not limited to, Silicom’s increasing dependence for substantial revenue growth on a limited number of customers in the evolving cloud-based market, the speed and extent to which cloud-based and cloud-focused solutions are adopted by the market, likelihood that Silicom will rely increasingly on customers which provide cloud-based and cloud-focused solutions in this evolving market, resulting in an increasing dependence on a smaller number of larger customers, difficulty in commercializing and marketing of Silicom’s products and services, maintaining and protecting brand recognition, protection of intellectual property, competition and other factors which Silicom discusses in its public filings. Therefore, there can be no assurance that actual future results will not differ significantly from anticipated results. Therefore, you are cautioned not to rely on these forward-looking statements. Silicom does not undertake to update any forward-looking statements as a result of new information or future events or developments except as may be required by law. Financial information as of 2010, as presented herein, may be considered "non- GAAP financial measures" under Regulation G and related reporting requirements promulgated by the Securities and Exchange Commission ("SEC") as they apply to Silicom. -
By CARLTON A. THOMPSON a DISSERTATION
A DESIGN AND PERFORMANCE STUDY OF A DISTRIBUTED IP-BASED TELECOMMUNICATION SYSTEM (D-IPTS) By CARLTON A. THOMPSON A DISSERTATION PRESENTED TO THE GRADUATE SCHOOL OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY UNIVERSITY OF FLORIDA 2016 © 2016 Carlton A. Thompson 2 To my mother Hyacinth Thompson and to the memory of my father Carlton Thompson, for always supporting me during my studies and work. 3 ACKNOWLEDGMENTS The path to PhD has been very challenging and I have achieved a milestone in my career. I learned a lot about the field of IP telecommunications, peformance analysis, and associated qualitative research methods. This dissertation would not have been written without the help of certain individuals. I would like to extend my gratitude towards my advisor Dr. Latchman and co-advisor Dr. McNair. They helped me with the selection of my topic and provided guidance during the writing of my dissertation. Their encouragement and insights have always been inspiring. In addition, none of this could have been possible without my family and loved ones providing their continuous support during my various course studies. Also, I would like to thank my friends and colleagues from the Electrical and Computer Engineering Department at the University of Florida. Finally, I would like to thank Texas Instruments ™ for providing financial support for this work. 4 TABLE OF CONTENTS page ACKNOWLEDGMENTS..................................4 LIST OF TABLES......................................9 LIST OF FIGURES..................................... 10 LIST OF ABBREVIATIONS ................................ 14 ABSTRACT......................................... 17 CHAPTER 1 INTRODUCTION .................................... 19 Motivation........................................ 20 Voice Networks..................................... 21 Traditional Telecommunications Networks.................. -
How Do Tor Users Interact with Onion Services?
How Do Tor Users Interact With Onion Services? Philipp Winter Anne Edmundson Laura M. Roberts Princeton University Princeton University Princeton University Agnieszka Dutkowska-Zuk˙ Marshini Chetty Nick Feamster Independent Princeton University Princeton University Abstract messaging [4] and file sharing [15]. The Tor Project currently does not have data on the number of onion Onion services are anonymous network services that are service users, but Facebook reported in 2016 that more exposed over the Tor network. In contrast to conventional than one million users logged into its onion service in one Internet services, onion services are private, generally not month [20]. indexed by search engines, and use self-certifying domain Onion services differ from conventional web services names that are long and difficult for humans to read. In in four ways; First, they can only be accessed over the Tor this paper, we study how people perceive, understand, and network. Second, onion domains are hashes over their use onion services based on data from 17 semi-structured public key, which make them difficult to remember. Third, interviews and an online survey of 517 users. We find that the network path between client and the onion service is users have an incomplete mental model of onion services, typically longer, increasing latency and thus reducing the use these services for anonymity and have varying trust in performance of the service. Finally, onion services are onion services in general. Users also have difficulty dis- private by default, meaning that users must discover these covering and tracking onion sites and authenticating them. sites organically, rather than with a search engine. -
Instant Messaging Service Reference
IceWarp Unified Communications Instant Messaging Service Reference Version 10.4 Printed on 16 April, 2012 Contents Instant Messaging 1 Reference ....................................................................................................................................................................... 2 General .............................................................................................................................................................. 2 Services .............................................................................................................................................................. 2 Trusted Hosts ..................................................................................................................................................... 8 Archive/History .................................................................................................................................................. 9 File Transfers between Clients ..................................................................................................................................... 10 Monitoring via IM ......................................................................................................................................................... 12 Monitor Services and Get Your GW Events, Tasks and Notes via IM .................................................. 12 Usage ..................................................................................................................................................