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» A System for Secure IP Telephone Conferences
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NCA
2006
IEEE
13 years 11 months ago
A System for Secure IP Telephone Conferences
We present a system for secure telephone conferences (stc) over the internet. The system ensures participant authentication via x.509 certificates, such that every participant of...
Axel Treßel, Jorg Keller
IJNSEC
2008
72views more  IJNSEC 2008»
13 years 5 months ago
Bandwidth-Conserving Multicast VoIP Teleconference System
Teleconferencing is an essential feature in any business telephone system. A teleconference allows associates to engage in a group discussion by conducting a virtual meeting while...
Teck-Kuen Chua, David C. Pheanis
CMS
2001
119views Communications» more  CMS 2001»
13 years 6 months ago
Vulnerabilities and Security Limitations of current IP Telephony Systems
Abstract Within the traditional telephone system a certain level of quality and security has been established over the years. If we try to use IP Telephony systems as a core part o...
Ralf Ackermann, Markus Schumacher, Utz Roedig, Ral...
ESORICS
2010
Springer
13 years 5 months ago
D(e|i)aling with VoIP: Robust Prevention of DIAL Attacks
We carry out attacks using Internet services that aim to keep telephone devices busy, hindering legitimate callers from gaining access. We use the term DIAL (Digitally Initiated A...
Alexandros Kapravelos, Iasonas Polakis, Elias Atha...
TELSYS
2010
154views more  TELSYS 2010»
12 years 11 months ago
Blocking attacks on SIP VoIP proxies caused by external processing
As Voice over IP (VoIP) applications become increasingly popular, they are more and more facing security challenges that have not been present in the traditional Public Switched Te...
Ge Zhang, Simone Fischer-Hübner, Sven Ehlert