Security Considerations for Voice Over IP Systems (PDF 99P)
Security Considerations for Voice Over IP Systems (PDF 99P)
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
This note is to make
you understand what Voice over IP (VoIP) systems are, their basic architectures,
and the underlying protocols and provides a basis for your own research and
development in this area.
This book provides a collection
of 15 excellent studies of Voice over IP (VoIP) technologies. This book
introduces research strategies that address various issues with the aim of
enhancing VoIP quality.
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
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.