Security Considerations for Voice Over IP Systems (PDF 99P)
This document is published by National Institute of Standards and Technology, this covers the following: Overview of VOIP, VOIP Equipment, Quality of Service Issues, Overview of VOIP Data Handling ,Cost, Privacy and Legal Issues with VOIP, VOIP Security Issues,Speed and Quality, H.323, SIP Gateway Decomposition, Firewalls, Address Translation, and Call Establishment, Encryption and IPsec, Solutions to the VOIPsec Issues, Planning for VOIP Deployment, VOIP Risks, Threats, and Vulnerabilities.
Author(s): D. Richard Kuhn, Thomas J. Walsh, Steffen Fries
99 Pages 
This note covers the following topics: protocol overview, components, H.225, RAS , Q.931, H 235V2 security, H 323 & firewalls, sccpskinny, RTP and RTCP,SIP, sample sip session, request methods, request headers, replies, SDP and SIP fire
Author(s): NA
112 Pages
Voice over IP by Professor Richard Harris
This note covers the following topics: current state of the art in Internet Telephony, key protocols involved in VoIP and their roles in this new technology, limitations of current VoIP technology, key factors influencing the growth of Internet telephony services for global communications.
Author(s): Richard Harris
37 Pages
Security Considerations for Voice Over IP Systems (PDF 99P)
This document is published by National Institute of Standards and Technology, this covers the following: Overview of VOIP, VOIP Equipment, Quality of Service Issues, Overview of VOIP Data Handling ,Cost, Privacy and Legal Issues with VOIP, VOIP Security Issues,Speed and Quality, H.323, SIP Gateway Decomposition, Firewalls, Address Translation, and Call Establishment, Encryption and IPsec, Solutions to the VOIPsec Issues, Planning for VOIP Deployment, VOIP Risks, Threats, and Vulnerabilities.
Author(s): D. Richard Kuhn, Thomas J. Walsh, Steffen Fries
99 Pages
Security Issues and Countermeasure for VoIP (PDF 33p)
This paper focuses on these VoIP specific security threats and the countermeasures to mitigate the problem. At first, this paper gives a brief introduction of VoIP techniques: the network structure, network components, protocols and standards, data handling procedures, quality of service requirements, etc. Secondly, the paper discusses the VoIP specific security threats using the principle of CIA (Confidentiality, Integrity and Availability). The countermeasure to mitigate these threats is also discussed.
Author(s): Jianqiang Xin
33 Pages
